Merge pull request #669 from SuanmoSuanyangTechnology/release/v0.2.8

Release/v0.2.8

api/alembic.ini

@@ -60,7 +60,12 @@ version_path_separator = os  # Use os.pathsep. Default configuration used for ne
 # are written from script.py.mako
 # output_encoding = utf-8
 
-sqlalchemy.url = postgresql://user:password@localhost/dbname
+# Database connection URL - DO NOT hardcode credentials here!
+# Connection string is set dynamically from environment variables in migrations/env.py
+# Required env vars: DB_USER, DB_PASSWORD, DB_HOST, DB_PORT, DB_NAME
+# Example: postgresql://user:password@localhost:5432/dbname
+; sqlalchemy.url = postgresql://user:password@host:port/dbname
+sqlalchemy.url = driver://user:password@host:port/dbname
 
 
 [post_write_hooks]

api/app/aioRedis.py

@@ -1,10 +1,11 @@
-import os
 import asyncio
 import json
 import logging
 from typing import Dict, Any, Optional
+
 import redis.asyncio as redis
 from redis.asyncio import ConnectionPool
+
 from app.core.config import settings
 
 # 设置日志记录器

api/app/celery_app.py

@@ -70,43 +70,44 @@ celery_app.conf.update(
     # 任务追踪
     task_track_started=True,
     task_ignore_result=False,
-    
+
     # 超时设置
     task_time_limit=3600,  # 60分钟硬超时
     task_soft_time_limit=3000,  # 50分钟软超时
-    
+
     # Worker 设置 (per-worker settings are in docker-compose command line)
     worker_prefetch_multiplier=1,  # Don't hoard tasks, fairer distribution
-    
+
     # 结果过期时间
     result_expires=3600,  # 结果保存1小时
-    
+
     # 任务确认设置
     task_acks_late=True,
     task_reject_on_worker_lost=True,
     worker_disable_rate_limits=True,
-    
+
     # FLower setting 
     worker_send_task_events=True,
     task_send_sent_event=True,
-    
+
     # task routing
     task_routes={
         # Memory tasks → memory_tasks queue (threads worker)
         'app.core.memory.agent.read_message_priority': {'queue': 'memory_tasks'},
         'app.core.memory.agent.read_message': {'queue': 'memory_tasks'},
         'app.core.memory.agent.write_message': {'queue': 'memory_tasks'},
-        
+        'app.tasks.write_perceptual_memory': {'queue': 'memory_tasks'},
+
         # Long-term storage tasks → memory_tasks queue (batched write strategies)
         'app.core.memory.agent.long_term_storage.window': {'queue': 'memory_tasks'},
         'app.core.memory.agent.long_term_storage.time': {'queue': 'memory_tasks'},
         'app.core.memory.agent.long_term_storage.aggregate': {'queue': 'memory_tasks'},
-        
+
         # Document tasks → document_tasks queue (prefork worker)
         'app.core.rag.tasks.parse_document': {'queue': 'document_tasks'},
         'app.core.rag.tasks.build_graphrag_for_kb': {'queue': 'document_tasks'},
         'app.core.rag.tasks.sync_knowledge_for_kb': {'queue': 'document_tasks'},
-        
+
         # Beat/periodic tasks → periodic_tasks queue (dedicated periodic worker)
         'app.tasks.workspace_reflection_task': {'queue': 'periodic_tasks'},
         'app.tasks.regenerate_memory_cache': {'queue': 'periodic_tasks'},
@@ -115,6 +116,7 @@ celery_app.conf.update(
         'app.tasks.update_implicit_emotions_storage': {'queue': 'periodic_tasks'},
         'app.tasks.init_implicit_emotions_for_users': {'queue': 'periodic_tasks'},
         'app.tasks.init_interest_distribution_for_users': {'queue': 'periodic_tasks'},
+        'app.tasks.init_community_clustering_for_users': {'queue': 'periodic_tasks'},
     },
 )
 
@@ -131,7 +133,7 @@ implicit_emotions_update_schedule = crontab(
     minute=settings.IMPLICIT_EMOTIONS_UPDATE_MINUTE,
 )
 
-#构建定时任务配置
+# 构建定时任务配置
 beat_schedule_config = {
     "run-workspace-reflection": {
         "task": "app.tasks.workspace_reflection_task",

api/app/celery_worker.py

@@ -13,4 +13,4 @@ logger.info("Celery worker logging initialized")
 # 导入任务模块以注册任务
 import app.tasks
 
-__all__ = ['celery_app']
+__all__ = ['celery_app']

api/app/controllers/__init__.py

@@ -16,6 +16,7 @@ from . import (
     file_controller,
     file_storage_controller,
     home_page_controller,
+    i18n_controller,
     implicit_memory_controller,
     knowledge_controller,
     knowledgeshare_controller,
@@ -94,5 +95,6 @@ manager_router.include_router(memory_working_controller.router)
 manager_router.include_router(file_storage_controller.router)
 manager_router.include_router(ontology_controller.router)
 manager_router.include_router(skill_controller.router)
+manager_router.include_router(i18n_controller.router)
 
 __all__ = ["manager_router"]

api/app/controllers/app_controller.py

@@ -53,6 +53,7 @@ def list_apps(
         status: str | None = None,
         search: str | None = None,
         include_shared: bool = True,
+        shared_only: bool = False,
         page: int = 1,
         pagesize: int = 10,
         ids: Optional[str] = None,
@@ -84,6 +85,7 @@ def list_apps(
         status=status,
         search=search,
         include_shared=include_shared,
+        shared_only=shared_only,
         page=page,
         pagesize=pagesize,
     )
@@ -93,6 +95,37 @@ def list_apps(
     return success(data=PageData(page=meta, items=items))
 
 
+@router.get("/my-shared-out", summary="列出本工作空间主动分享出去的记录")
+@cur_workspace_access_guard()
+def list_my_shared_out(
+        db: Session = Depends(get_db),
+        current_user=Depends(get_current_user),
+):
+    """列出本工作空间主动分享给其他工作空间的所有记录（我的共享）"""
+    workspace_id = current_user.current_workspace_id
+    service = app_service.AppService(db)
+    shares = service.list_my_shared_out(workspace_id=workspace_id)
+    data = [app_schema.AppShare.model_validate(s) for s in shares]
+    return success(data=data)
+
+
+@router.delete("/share/{target_workspace_id}", summary="取消对某工作空间的所有应用分享")
+@cur_workspace_access_guard()
+def unshare_all_apps_to_workspace(
+        target_workspace_id: uuid.UUID,
+        db: Session = Depends(get_db),
+        current_user=Depends(get_current_user),
+):
+    """Cancel all app shares from current workspace to a target workspace."""
+    workspace_id = current_user.current_workspace_id
+    service = app_service.AppService(db)
+    count = service.unshare_all_apps_to_workspace(
+        target_workspace_id=target_workspace_id,
+        workspace_id=workspace_id
+    )
+    return success(msg=f"已取消 {count} 个应用的分享", data={"count": count})
+
+
 @router.get("/{app_id}", summary="获取应用详情")
 @cur_workspace_access_guard()
 def get_app(
@@ -161,6 +194,7 @@ def delete_app(
 def copy_app(
         app_id: uuid.UUID,
         new_name: Optional[str] = None,
+        payload: app_schema.CopyAppRequest = None,
         db: Session = Depends(get_db),
         current_user=Depends(get_current_user),
 ):
@@ -172,6 +206,8 @@ def copy_app(
     - 不影响原应用
     """
     workspace_id = current_user.current_workspace_id
+    # body takes precedence over query param for backward compatibility
+    new_name = (payload.new_name if payload else None) or new_name
     logger.info(
         "用户请求复制应用",
         extra={
@@ -221,6 +257,27 @@ def get_agent_config(
     return success(data=app_schema.AgentConfig.model_validate(cfg))
 
 
+@router.get("/{app_id}/opening", summary="获取应用开场白配置")
+@cur_workspace_access_guard()
+def get_opening(
+        app_id: uuid.UUID,
+        db: Session = Depends(get_db),
+        current_user=Depends(get_current_user),
+):
+    """返回开场白文本和预设问题，供前端对话界面初始化时展示"""
+    workspace_id = current_user.current_workspace_id
+    cfg = app_service.get_agent_config(db, app_id=app_id, workspace_id=workspace_id)
+    features = cfg.features or {}
+    if hasattr(features, "model_dump"):
+        features = features.model_dump()
+    opening = features.get("opening_statement", {})
+    return success(data=app_schema.OpeningResponse(
+        enabled=opening.get("enabled", False),
+        statement=opening.get("statement"),
+        suggested_questions=opening.get("suggested_questions", []),
+    ))
+
+
 @router.post("/{app_id}/publish", summary="发布应用（生成不可变快照）")
 @cur_workspace_access_guard()
 def publish_app(
@@ -302,7 +359,8 @@ def share_app(
         app_id=app_id,
         target_workspace_ids=payload.target_workspace_ids,
         user_id=current_user.id,
-        workspace_id=workspace_id
+        workspace_id=workspace_id,
+        permission=payload.permission
     )
 
     data = [app_schema.AppShare.model_validate(s) for s in shares]
@@ -333,6 +391,32 @@ def unshare_app(
     return success(msg="应用分享已取消")
 
 
+@router.patch("/{app_id}/share/{target_workspace_id}", summary="更新共享权限")
+@cur_workspace_access_guard()
+def update_share_permission(
+        app_id: uuid.UUID,
+        target_workspace_id: uuid.UUID,
+        payload: app_schema.UpdateSharePermissionRequest,
+        db: Session = Depends(get_db),
+        current_user=Depends(get_current_user),
+):
+    """更新共享权限（readonly <-> editable）
+
+    - 只能修改自己工作空间应用的共享权限
+    """
+    workspace_id = current_user.current_workspace_id
+
+    service = app_service.AppService(db)
+    share = service.update_share_permission(
+        app_id=app_id,
+        target_workspace_id=target_workspace_id,
+        permission=payload.permission,
+        workspace_id=workspace_id
+    )
+
+    return success(data=app_schema.AppShare.model_validate(share))
+
+
 @router.get("/{app_id}/shares", summary="列出应用的分享记录")
 @cur_workspace_access_guard()
 def list_app_shares(
@@ -356,6 +440,46 @@ def list_app_shares(
     return success(data=data)
 
 
+@router.delete("/shared/{source_workspace_id}", summary="批量移除某来源工作空间的所有共享应用")
+@cur_workspace_access_guard()
+def remove_all_shared_apps_from_workspace(
+        source_workspace_id: uuid.UUID,
+        db: Session = Depends(get_db),
+        current_user=Depends(get_current_user),
+):
+    """Remove all shared apps from a specific source workspace (recipient operation)."""
+    workspace_id = current_user.current_workspace_id
+    service = app_service.AppService(db)
+    count = service.remove_all_shared_apps_from_workspace(
+        source_workspace_id=source_workspace_id,
+        workspace_id=workspace_id
+    )
+    return success(msg=f"已移除 {count} 个共享应用", data={"count": count})
+
+
+@router.delete("/{app_id}/shared", summary="移除共享给我的应用")
+@cur_workspace_access_guard()
+def remove_shared_app(
+        app_id: uuid.UUID,
+        db: Session = Depends(get_db),
+        current_user=Depends(get_current_user),
+):
+    """被共享者从自己的工作空间移除共享应用
+
+    - 不会删除源应用，只删除共享记录
+    - 只能移除共享给自己工作空间的应用
+    """
+    workspace_id = current_user.current_workspace_id
+
+    service = app_service.AppService(db)
+    service.remove_shared_app(
+        app_id=app_id,
+        workspace_id=workspace_id
+    )
+
+    return success(msg="已移除共享应用")
+
+
 @router.post("/{app_id}/draft/run", summary="试运行 Agent（使用当前草稿配置）")
 @cur_workspace_access_guard()
 async def draft_run(
@@ -396,7 +520,7 @@ async def draft_run(
     # 提前验证和准备（在流式响应开始前完成）
     from app.services.app_service import AppService
     from app.services.multi_agent_service import MultiAgentService
-    from app.models import AgentConfig, ModelConfig
+    from app.models import AgentConfig, ModelConfig, AppRelease
     from sqlalchemy import select
     from app.core.exceptions import BusinessException
     from app.services.draft_run_service import AgentRunService
@@ -413,11 +537,12 @@ async def draft_run(
     service._validate_app_accessible(app, workspace_id)
 
     if payload.user_id is None:
+        # 先获取 app 的 workspace_id
         end_user_repo = EndUserRepository(db)
         new_end_user = end_user_repo.get_or_create_end_user(
             app_id=app_id,
+            workspace_id=app.workspace_id,
             other_id=str(current_user.id),
-            original_user_id=str(current_user.id)  # Save original user_id to other_id
         )
         payload.user_id = str(new_end_user.id)
 
@@ -434,18 +559,29 @@ async def draft_run(
         service._check_agent_config(app_id)
 
         # 2. 获取 Agent 配置
-        stmt = select(AgentConfig).where(AgentConfig.app_id == app_id)
-        agent_cfg = db.scalars(stmt).first()
-        if not agent_cfg:
-            raise BusinessException("Agent 配置不存在", BizCode.AGENT_CONFIG_MISSING)
+        # 共享应用：从最新发布版本读配置快照，而非草稿
+        is_shared = app.workspace_id != workspace_id
+        if is_shared:
+            if not app.current_release_id:
+                raise BusinessException("该应用尚未发布，无法使用", BizCode.AGENT_CONFIG_MISSING)
+            release = db.get(AppRelease, app.current_release_id)
+            if not release:
+                raise BusinessException("发布版本不存在", BizCode.AGENT_CONFIG_MISSING)
+            agent_cfg = service._agent_config_from_release(release)
+            model_config = db.get(ModelConfig, release.default_model_config_id) if release.default_model_config_id else None
+        else:
+            stmt = select(AgentConfig).where(AgentConfig.app_id == app_id)
+            agent_cfg = db.scalars(stmt).first()
+            if not agent_cfg:
+                raise BusinessException("Agent 配置不存在", BizCode.AGENT_CONFIG_MISSING)
 
-        # 3. 获取模型配置
-        model_config = None
-        if agent_cfg.default_model_config_id:
-            model_config = db.get(ModelConfig, agent_cfg.default_model_config_id)
-            if not model_config:
-                from app.core.exceptions import ResourceNotFoundException
-                raise ResourceNotFoundException("模型配置", str(agent_cfg.default_model_config_id))
+            # 3. 获取模型配置
+            model_config = None
+            if agent_cfg.default_model_config_id:
+                model_config = db.get(ModelConfig, agent_cfg.default_model_config_id)
+                if not model_config:
+                    from app.core.exceptions import ResourceNotFoundException
+                    raise ResourceNotFoundException("模型配置", str(agent_cfg.default_model_config_id))
 
         # 流式返回
         if payload.stream:
@@ -601,7 +737,17 @@ async def draft_run(
             msg="多 Agent 任务执行成功"
         )
     elif app.type == AppType.WORKFLOW:  # 工作流
-        config = workflow_service.check_config(app_id)
+        # 共享应用：从最新发布版本读配置快照，而非草稿
+        is_shared = app.workspace_id != workspace_id
+        if is_shared:
+            if not app.current_release_id:
+                raise BusinessException("该应用尚未发布，无法使用", BizCode.AGENT_CONFIG_MISSING)
+            release = db.get(AppRelease, app.current_release_id)
+            if not release:
+                raise BusinessException("发布版本不存在", BizCode.AGENT_CONFIG_MISSING)
+            config = service._workflow_config_from_release(release)
+        else:
+            config = workflow_service.check_config(app_id)
         # 3. 流式返回
         if payload.stream:
             logger.debug(
@@ -744,6 +890,16 @@ async def draft_run_compare(
         raise BusinessException("只有 Agent 类型应用支持试运行", BizCode.APP_TYPE_NOT_SUPPORTED)
     service._validate_app_accessible(app, workspace_id)
 
+    if payload.user_id is None:
+        # 先获取 app 的 workspace_id
+        end_user_repo = EndUserRepository(db)
+        new_end_user = end_user_repo.get_or_create_end_user(
+            app_id=app_id,
+            workspace_id=app.workspace_id,
+            other_id=str(current_user.id),
+        )
+        payload.user_id = str(new_end_user.id)
+
     # 2. 获取 Agent 配置
     from sqlalchemy import select
     from app.models import AgentConfig
@@ -789,6 +945,13 @@ async def draft_run_compare(
             "conversation_id": model_item.conversation_id  # 传递每个模型的 conversation_id
         })
 
+    # 从 features 中读取功能开关（与 draft_run 保持一致）
+    features_config: dict = agent_cfg.features or {}
+    if hasattr(features_config, 'model_dump'):
+        features_config = features_config.model_dump()
+    web_search_feature = features_config.get("web_search", {})
+    web_search = isinstance(web_search_feature, dict) and web_search_feature.get("enabled", False)
+
     # 流式返回
     if payload.stream:
         async def event_generator():
@@ -800,11 +963,11 @@ async def draft_run_compare(
                     message=payload.message,
                     workspace_id=workspace_id,
                     conversation_id=payload.conversation_id,
-                    user_id=payload.user_id or str(current_user.id),
+                    user_id=payload.user_id,
                     variables=payload.variables,
                     storage_type=storage_type,
                     user_rag_memory_id=user_rag_memory_id,
-                    web_search=True,
+                    web_search=web_search,
                     memory=True,
                     parallel=payload.parallel,
                     timeout=payload.timeout or 60,
@@ -831,11 +994,11 @@ async def draft_run_compare(
         message=payload.message,
         workspace_id=workspace_id,
         conversation_id=payload.conversation_id,
-        user_id=payload.user_id or str(current_user.id),
+        user_id=payload.user_id,
         variables=payload.variables,
         storage_type=storage_type,
         user_rag_memory_id=user_rag_memory_id,
-        web_search=True,
+        web_search=web_search,
         memory=True,
         parallel=payload.parallel,
         timeout=payload.timeout or 60,

api/app/controllers/auth_controller.py

@@ -1,4 +1,5 @@
 from datetime import datetime, timedelta, timezone
+from typing import Callable
 from fastapi import APIRouter, Depends
 from sqlalchemy.orm import Session
 
@@ -16,6 +17,7 @@ from app.core.exceptions import BusinessException
 from app.core.error_codes import BizCode
 from app.dependencies import get_current_user, oauth2_scheme
 from app.models.user_model import User
+from app.i18n.dependencies import get_translator
 
 # 获取专用日志器
 auth_logger = get_auth_logger()
@@ -26,7 +28,8 @@ router = APIRouter(tags=["Authentication"])
 @router.post("/token", response_model=ApiResponse)
 async def login_for_access_token(
     form_data: TokenRequest,
-    db: Session = Depends(get_db)
+    db: Session = Depends(get_db),
+    t: Callable = Depends(get_translator)
 ):
     """用户登录获取token"""
     auth_logger.info(f"用户登录请求: {form_data.email}")
@@ -40,10 +43,10 @@ async def login_for_access_token(
         invite_info = workspace_service.validate_invite_token(db, form_data.invite)
         
         if not invite_info.is_valid:
-            raise BusinessException("邀请码无效或已过期", code=BizCode.BAD_REQUEST)
+            raise BusinessException(t("auth.invite.invalid"), code=BizCode.BAD_REQUEST)
         
         if invite_info.email != form_data.email:
-            raise BusinessException("邀请邮箱与登录邮箱不匹配", code=BizCode.BAD_REQUEST)        
+            raise BusinessException(t("auth.invite.email_mismatch"), code=BizCode.BAD_REQUEST)        
         auth_logger.info(f"邀请码验证成功: workspace={invite_info.workspace_name}")
         try:
             # 尝试认证用户
@@ -69,7 +72,7 @@ async def login_for_access_token(
             elif e.code == BizCode.PASSWORD_ERROR:
                 # 用户存在但密码错误
                 auth_logger.warning(f"接受邀请失败，密码验证错误: {form_data.email}")
-                raise BusinessException("接受邀请失败，密码验证错误", BizCode.LOGIN_FAILED)
+                raise BusinessException(t("auth.invite.password_verification_failed"), BizCode.LOGIN_FAILED)
             else:
                 # 其他认证失败情况，直接抛出
                 raise
@@ -82,7 +85,7 @@ async def login_for_access_token(
         except BusinessException as e:
             
             # 其他认证失败情况，直接抛出
-            raise BusinessException(e.message,BizCode.LOGIN_FAILED)
+            raise BusinessException(e.message, BizCode.LOGIN_FAILED)
 
     # 创建 tokens
     access_token, access_token_id = security.create_access_token(subject=user.id)
@@ -110,14 +113,15 @@ async def login_for_access_token(
             expires_at=access_expires_at,
             refresh_expires_at=refresh_expires_at
         ),
-        msg="登录成功"
+        msg=t("auth.login.success")
     )
 
 
 @router.post("/refresh", response_model=ApiResponse)
 async def refresh_token(
     refresh_request: RefreshTokenRequest,
-    db: Session = Depends(get_db)
+    db: Session = Depends(get_db),
+    t: Callable = Depends(get_translator)
 ):
     """刷新token"""
     auth_logger.info("收到token刷新请求")
@@ -125,18 +129,18 @@ async def refresh_token(
     # 验证 refresh token
     userId = security.verify_token(refresh_request.refresh_token, "refresh")
     if not userId:
-        raise BusinessException("无效的refresh token", code=BizCode.TOKEN_INVALID)
+        raise BusinessException(t("auth.token.invalid_refresh_token"), code=BizCode.TOKEN_INVALID)
     
     # 检查用户是否存在
     user = auth_service.get_user_by_id(db, userId)
     if not user:
-        raise BusinessException("用户不存在", code=BizCode.USER_NOT_FOUND)
+        raise BusinessException(t("auth.user.not_found"), code=BizCode.USER_NOT_FOUND)
     
     # 检查 refresh token 黑名单
     if settings.ENABLE_SINGLE_SESSION:
         refresh_token_id = security.get_token_id(refresh_request.refresh_token)
         if refresh_token_id and await SessionService.is_token_blacklisted(refresh_token_id):
-            raise BusinessException("Refresh token已失效", code=BizCode.TOKEN_BLACKLISTED)
+            raise BusinessException(t("auth.token.refresh_token_blacklisted"), code=BizCode.TOKEN_BLACKLISTED)
     
     # 生成新 tokens
     new_access_token, new_access_token_id = security.create_access_token(subject=user.id)
@@ -167,7 +171,7 @@ async def refresh_token(
             expires_at=access_expires_at,
             refresh_expires_at=refresh_expires_at
         ),
-        msg="token刷新成功"
+        msg=t("auth.token.refresh_success")
     )
 
 
@@ -175,14 +179,15 @@ async def refresh_token(
 async def logout(
     token: str = Depends(oauth2_scheme),
     current_user: User = Depends(get_current_user),
-    db: Session = Depends(get_db)
+    db: Session = Depends(get_db),
+    t: Callable = Depends(get_translator)
 ):
     """登出当前用户：加入token黑名单并清理会话"""
     auth_logger.info(f"用户 {current_user.username} 请求登出")
     
     token_id = security.get_token_id(token)
     if not token_id:
-        raise BusinessException("无效的access token", code=BizCode.TOKEN_INVALID)
+        raise BusinessException(t("auth.token.invalid"), code=BizCode.TOKEN_INVALID)
 
     # 加入黑名单
     await SessionService.blacklist_token(token_id)
@@ -192,5 +197,5 @@ async def logout(
         await SessionService.clear_user_session(current_user.username)
 
     auth_logger.info(f"用户 {current_user.username} 登出成功")
-    return success(msg="登出成功")
+    return success(msg=t("auth.logout.success"))
 

api/app/controllers/file_storage_controller.py

@@ -15,7 +15,7 @@ import os
 import uuid
 from typing import Any
 
-from fastapi import APIRouter, Depends, File, HTTPException, UploadFile, status
+from fastapi import APIRouter, Depends, File, HTTPException, Request, UploadFile, status
 from fastapi.responses import FileResponse, RedirectResponse
 from sqlalchemy.orm import Session
 
@@ -47,6 +47,19 @@ router = APIRouter(
 )
 
 
+def _match_scheme(request: Request, url: str) -> str:
+    """
+    将 presigned URL 的协议替换为与当前请求一致的协议（http/https）。
+    解决反向代理场景下 presigned URL 协议与请求协议不匹配的问题。
+    """
+    incoming_scheme = request.headers.get("x-forwarded-proto") or request.url.scheme
+    if url.startswith("http://") and incoming_scheme == "https":
+        return "https://" + url[7:]
+    if url.startswith("https://") and incoming_scheme == "http":
+        return "http://" + url[8:]
+    return url
+
+
 @router.post("/files", response_model=ApiResponse)
 async def upload_file(
     file: UploadFile = File(...),
@@ -78,7 +91,7 @@ async def upload_file(
 
     if file_size > settings.MAX_FILE_SIZE:
         raise HTTPException(
-            status_code=status.HTTP_400_BAD_REQUEST,
+            status_code=status.HTTP_413_CONTENT_TOO_LARGE,
             detail=f"The file size exceeds the {settings.MAX_FILE_SIZE} byte limit"
         )
 
@@ -159,7 +172,6 @@ async def upload_file_with_share_token(
     
     # Get share and release info from share_token
     service = ReleaseShareService(db)
-    share_info = service.get_shared_release_info(share_token=share_data.share_token)
     
     # Get share object to access app_id
     share = service.repo.get_by_share_token(share_data.share_token)
@@ -280,6 +292,7 @@ async def upload_file_with_share_token(
 
 @router.get("/files/{file_id}", response_model=Any)
 async def download_file(
+    request: Request,
     file_id: uuid.UUID,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
@@ -327,6 +340,7 @@ async def download_file(
     else:
         try:
             presigned_url = await storage_service.get_file_url(file_key, expires=3600)
+            presigned_url = _match_scheme(request, presigned_url)
             api_logger.info(f"Redirecting to presigned URL: file_key={file_key}")
             return RedirectResponse(url=presigned_url, status_code=status.HTTP_302_FOUND)
         except FileNotFoundError:
@@ -400,6 +414,7 @@ async def delete_file(
 
 @router.get("/files/{file_id}/url", response_model=ApiResponse)
 async def get_file_url(
+    request: Request,
     file_id: uuid.UUID,
     expires: int = None,
     permanent: bool = False,
@@ -463,6 +478,7 @@ async def get_file_url(
         else:
             # For remote storage (OSS/S3), get presigned URL
             url = await storage_service.get_file_url(file_key, expires=expires)
+            url = _match_scheme(request, url)
 
         api_logger.info(f"Generated file URL: file_id={file_id}")
         return success(
@@ -482,8 +498,54 @@ async def get_file_url(
         )
 
 
+@router.get("/files/{file_id}/public-url", response_model=ApiResponse)
+async def get_permanent_file_url(
+    file_id: uuid.UUID,
+    db: Session = Depends(get_db),
+    storage_service: FileStorageService = Depends(get_file_storage_service),
+):
+    """
+    获取文件的永久公开 URL（无过期时间）。
+
+    - 本地存储：返回 API 永久访问地址（基于 FILE_LOCAL_SERVER_URL 配置）
+    - 远程存储（OSS/S3）：返回 bucket 公读地址（需 bucket 已配置公共读权限）
+    """
+    file_metadata = db.query(FileMetadata).filter(FileMetadata.id == file_id).first()
+    if not file_metadata:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="The file does not exist")
+
+    if file_metadata.status != "completed":
+        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST,
+                            detail=f"File upload not completed, status: {file_metadata.status}")
+
+    file_key = file_metadata.file_key
+    storage = storage_service.storage
+
+    try:
+        if isinstance(storage, LocalStorage):
+            url = f"{settings.FILE_LOCAL_SERVER_URL}/storage/permanent/{file_id}"
+        else:
+            url = await storage.get_permanent_url(file_key)
+            if not url:
+                raise HTTPException(status_code=status.HTTP_501_NOT_IMPLEMENTED,
+                                    detail="Permanent URL not supported for current storage backend")
+
+        api_logger.info(f"Generated permanent URL: file_id={file_id}")
+        return success(
+            data={"url": url, "expires_in": None, "permanent": True, "file_name": file_metadata.file_name},
+            msg="Permanent file URL generated successfully"
+        )
+    except HTTPException:
+        raise
+    except Exception as e:
+        api_logger.error(f"Failed to generate permanent URL: {e}")
+        raise HTTPException(status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+                            detail=f"Failed to generate permanent URL: {str(e)}")
+
+
 @router.get("/public/{file_id}", response_model=Any)
 async def public_download_file(
+    request: Request,
     file_id: uuid.UUID,
     expires: int = 0,
     signature: str = "",
@@ -555,6 +617,7 @@ async def public_download_file(
         # For remote storage, redirect to presigned URL
         try:
             presigned_url = await storage_service.get_file_url(file_key, expires=3600)
+            presigned_url = _match_scheme(request, presigned_url)
             return RedirectResponse(url=presigned_url, status_code=status.HTTP_302_FOUND)
         except Exception as e:
             api_logger.error(f"Failed to get presigned URL: {e}")
@@ -566,6 +629,7 @@ async def public_download_file(
 
 @router.get("/permanent/{file_id}", response_model=Any)
 async def permanent_download_file(
+    request: Request,
     file_id: uuid.UUID,
     db: Session = Depends(get_db),
     storage_service: FileStorageService = Depends(get_file_storage_service),
@@ -625,6 +689,7 @@ async def permanent_download_file(
         try:
             # Use a very long expiration (7 days max for most cloud providers)
             presigned_url = await storage_service.get_file_url(file_key, expires=604800)
+            presigned_url = _match_scheme(request, presigned_url)
             return RedirectResponse(url=presigned_url, status_code=status.HTTP_302_FOUND)
         except Exception as e:
             api_logger.error(f"Failed to get presigned URL: {e}")

api/app/controllers/i18n_controller.py

@@ -0,0 +1,833 @@
+"""
+I18n Management API Controller
+
+This module provides management APIs for:
+- Language management (list, get, add, update languages)
+- Translation management (get, update, reload translations)
+"""
+
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+from typing import Callable, Optional
+
+from app.core.logging_config import get_api_logger
+from app.core.response_utils import success
+from app.db import get_db
+from app.dependencies import get_current_user, get_current_superuser
+from app.i18n.dependencies import get_translator
+from app.i18n.service import get_translation_service
+from app.models.user_model import User
+from app.schemas.i18n_schema import (
+    LanguageInfo,
+    LanguageListResponse,
+    LanguageCreateRequest,
+    LanguageUpdateRequest,
+    TranslationResponse,
+    TranslationUpdateRequest,
+    MissingTranslationsResponse,
+    ReloadResponse
+)
+from app.schemas.response_schema import ApiResponse
+
+api_logger = get_api_logger()
+
+router = APIRouter(
+    prefix="/i18n",
+    tags=["I18n Management"],
+)
+
+
+# ============================================================================
+# Language Management APIs
+# ============================================================================
+
+@router.get("/languages", response_model=ApiResponse)
+def get_languages(
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    Get list of all supported languages.
+    
+    Returns:
+        List of language information including code, name, and status
+    """
+    api_logger.info(f"Get languages request from user: {current_user.username}")
+    
+    from app.core.config import settings
+    translation_service = get_translation_service()
+    
+    # Get available locales from translation service
+    available_locales = translation_service.get_available_locales()
+    
+    # Build language info list
+    languages = []
+    for locale in available_locales:
+        is_default = locale == settings.I18N_DEFAULT_LANGUAGE
+        is_enabled = locale in settings.I18N_SUPPORTED_LANGUAGES
+        
+        # Get native names
+        native_names = {
+            "zh": "中文（简体）",
+            "en": "English",
+            "ja": "日本語",
+            "ko": "한국어",
+            "fr": "Français",
+            "de": "Deutsch",
+            "es": "Español"
+        }
+        
+        language_info = LanguageInfo(
+            code=locale,
+            name=f"{locale.upper()}",
+            native_name=native_names.get(locale, locale),
+            is_enabled=is_enabled,
+            is_default=is_default
+        )
+        languages.append(language_info)
+    
+    response = LanguageListResponse(languages=languages)
+    
+    api_logger.info(f"Returning {len(languages)} languages")
+    return success(data=response.dict(), msg=t("common.success.retrieved"))
+
+
+@router.get("/languages/{locale}", response_model=ApiResponse)
+def get_language(
+    locale: str,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    Get information about a specific language.
+    
+    Args:
+        locale: Language code (e.g., 'zh', 'en')
+        
+    Returns:
+        Language information
+    """
+    api_logger.info(f"Get language info request: locale={locale}, user={current_user.username}")
+    
+    from app.core.config import settings
+    translation_service = get_translation_service()
+    
+    # Check if locale exists
+    available_locales = translation_service.get_available_locales()
+    if locale not in available_locales:
+        api_logger.warning(f"Language not found: {locale}")
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=t("i18n.language.not_found", locale=locale)
+        )
+    
+    # Build language info
+    is_default = locale == settings.I18N_DEFAULT_LANGUAGE
+    is_enabled = locale in settings.I18N_SUPPORTED_LANGUAGES
+    
+    native_names = {
+        "zh": "中文（简体）",
+        "en": "English",
+        "ja": "日本語",
+        "ko": "한국어",
+        "fr": "Français",
+        "de": "Deutsch",
+        "es": "Español"
+    }
+    
+    language_info = LanguageInfo(
+        code=locale,
+        name=f"{locale.upper()}",
+        native_name=native_names.get(locale, locale),
+        is_enabled=is_enabled,
+        is_default=is_default
+    )
+    
+    api_logger.info(f"Returning language info for: {locale}")
+    return success(data=language_info.dict(), msg=t("common.success.retrieved"))
+
+
+@router.post("/languages", response_model=ApiResponse)
+def add_language(
+    request: LanguageCreateRequest,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Add a new language (admin only).
+    
+    Note: This endpoint validates the request but actual language addition
+    requires creating translation files in the locales directory.
+    
+    Args:
+        request: Language creation request
+        
+    Returns:
+        Success message
+    """
+    api_logger.info(
+        f"Add language request: code={request.code}, admin={current_user.username}"
+    )
+    
+    from app.core.config import settings
+    translation_service = get_translation_service()
+    
+    # Check if language already exists
+    available_locales = translation_service.get_available_locales()
+    if request.code in available_locales:
+        api_logger.warning(f"Language already exists: {request.code}")
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=t("i18n.language.already_exists", locale=request.code)
+        )
+    
+    # Note: Actual language addition requires creating translation files
+    # This endpoint serves as a validation and documentation point
+    
+    api_logger.info(
+        f"Language addition validated: {request.code}. "
+        "Translation files need to be created manually."
+    )
+    
+    return success(
+        msg=t(
+            "i18n.language.add_instructions",
+            locale=request.code,
+            dir=settings.I18N_CORE_LOCALES_DIR
+        )
+    )
+
+
+@router.put("/languages/{locale}", response_model=ApiResponse)
+def update_language(
+    locale: str,
+    request: LanguageUpdateRequest,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Update language configuration (admin only).
+    
+    Note: This endpoint validates the request but actual configuration
+    changes require updating environment variables or config files.
+    
+    Args:
+        locale: Language code
+        request: Language update request
+        
+    Returns:
+        Success message
+    """
+    api_logger.info(
+        f"Update language request: locale={locale}, admin={current_user.username}"
+    )
+    
+    translation_service = get_translation_service()
+    
+    # Check if language exists
+    available_locales = translation_service.get_available_locales()
+    if locale not in available_locales:
+        api_logger.warning(f"Language not found: {locale}")
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=t("i18n.language.not_found", locale=locale)
+        )
+    
+    # Note: Actual configuration changes require updating settings
+    # This endpoint serves as a validation and documentation point
+    
+    api_logger.info(
+        f"Language update validated: {locale}. "
+        "Configuration changes require environment variable updates."
+    )
+    
+    return success(msg=t("i18n.language.update_instructions", locale=locale))
+
+
+# ============================================================================
+# Translation Management APIs
+# ============================================================================
+
+@router.get("/translations", response_model=ApiResponse)
+def get_all_translations(
+    locale: Optional[str] = None,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    Get all translations for all or specific locale.
+    
+    Args:
+        locale: Optional locale filter
+        
+    Returns:
+        All translations organized by locale and namespace
+    """
+    api_logger.info(
+        f"Get all translations request: locale={locale}, user={current_user.username}"
+    )
+    
+    translation_service = get_translation_service()
+    
+    if locale:
+        # Get translations for specific locale
+        available_locales = translation_service.get_available_locales()
+        if locale not in available_locales:
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail=t("i18n.language.not_found", locale=locale)
+            )
+        
+        translations = {
+            locale: translation_service._cache.get(locale, {})
+        }
+    else:
+        # Get all translations
+        translations = translation_service._cache
+    
+    response = TranslationResponse(translations=translations)
+    
+    api_logger.info(f"Returning translations for: {locale or 'all locales'}")
+    return success(data=response.dict(), msg=t("common.success.retrieved"))
+
+
+@router.get("/translations/{locale}", response_model=ApiResponse)
+def get_locale_translations(
+    locale: str,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    Get all translations for a specific locale.
+    
+    Args:
+        locale: Language code
+        
+    Returns:
+        All translations for the locale organized by namespace
+    """
+    api_logger.info(
+        f"Get locale translations request: locale={locale}, user={current_user.username}"
+    )
+    
+    translation_service = get_translation_service()
+    
+    # Check if locale exists
+    available_locales = translation_service.get_available_locales()
+    if locale not in available_locales:
+        api_logger.warning(f"Language not found: {locale}")
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=t("i18n.language.not_found", locale=locale)
+        )
+    
+    translations = translation_service._cache.get(locale, {})
+    
+    api_logger.info(f"Returning {len(translations)} namespaces for locale: {locale}")
+    return success(data={"locale": locale, "translations": translations}, msg=t("common.success.retrieved"))
+
+
+@router.get("/translations/{locale}/{namespace}", response_model=ApiResponse)
+def get_namespace_translations(
+    locale: str,
+    namespace: str,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    Get translations for a specific namespace in a locale.
+    
+    Args:
+        locale: Language code
+        namespace: Translation namespace (e.g., 'common', 'auth')
+        
+    Returns:
+        Translations for the specified namespace
+    """
+    api_logger.info(
+        f"Get namespace translations request: locale={locale}, "
+        f"namespace={namespace}, user={current_user.username}"
+    )
+    
+    translation_service = get_translation_service()
+    
+    # Check if locale exists
+    available_locales = translation_service.get_available_locales()
+    if locale not in available_locales:
+        api_logger.warning(f"Language not found: {locale}")
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=t("i18n.language.not_found", locale=locale)
+        )
+    
+    # Get namespace translations
+    locale_translations = translation_service._cache.get(locale, {})
+    namespace_translations = locale_translations.get(namespace, {})
+    
+    if not namespace_translations:
+        api_logger.warning(f"Namespace not found: {namespace} in locale: {locale}")
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=t("i18n.namespace.not_found", namespace=namespace, locale=locale)
+        )
+    
+    api_logger.info(
+        f"Returning translations for namespace: {namespace} in locale: {locale}"
+    )
+    return success(
+        data={
+            "locale": locale,
+            "namespace": namespace,
+            "translations": namespace_translations
+        },
+        msg=t("common.success.retrieved")
+    )
+
+
+@router.put("/translations/{locale}/{key:path}", response_model=ApiResponse)
+def update_translation(
+    locale: str,
+    key: str,
+    request: TranslationUpdateRequest,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Update a single translation (admin only).
+    
+    Note: This endpoint validates the request but actual translation updates
+    require modifying translation files in the locales directory.
+    
+    Args:
+        locale: Language code
+        key: Translation key (format: "namespace.key.subkey")
+        request: Translation update request
+        
+    Returns:
+        Success message
+    """
+    api_logger.info(
+        f"Update translation request: locale={locale}, key={key}, "
+        f"admin={current_user.username}"
+    )
+    
+    translation_service = get_translation_service()
+    
+    # Check if locale exists
+    available_locales = translation_service.get_available_locales()
+    if locale not in available_locales:
+        api_logger.warning(f"Language not found: {locale}")
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=t("i18n.language.not_found", locale=locale)
+        )
+    
+    # Validate key format
+    if "." not in key:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=t("i18n.translation.invalid_key_format", key=key)
+        )
+    
+    # Note: Actual translation updates require modifying JSON files
+    # This endpoint serves as a validation and documentation point
+    
+    api_logger.info(
+        f"Translation update validated: {locale}/{key}. "
+        "Translation files need to be updated manually."
+    )
+    
+    return success(
+        msg=t("i18n.translation.update_instructions", locale=locale, key=key)
+    )
+
+
+@router.get("/translations/missing", response_model=ApiResponse)
+def get_missing_translations(
+    locale: Optional[str] = None,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    Get list of missing translations.
+    
+    Compares translations across locales to find missing keys.
+    
+    Args:
+        locale: Optional locale to check (defaults to checking all non-default locales)
+        
+    Returns:
+        List of missing translation keys
+    """
+    api_logger.info(
+        f"Get missing translations request: locale={locale}, user={current_user.username}"
+    )
+    
+    from app.core.config import settings
+    translation_service = get_translation_service()
+    
+    default_locale = settings.I18N_DEFAULT_LANGUAGE
+    available_locales = translation_service.get_available_locales()
+    
+    # Get default locale translations as reference
+    default_translations = translation_service._cache.get(default_locale, {})
+    
+    # Collect all keys from default locale
+    def collect_keys(data, prefix=""):
+        keys = []
+        for key, value in data.items():
+            full_key = f"{prefix}.{key}" if prefix else key
+            if isinstance(value, dict):
+                keys.extend(collect_keys(value, full_key))
+            else:
+                keys.append(full_key)
+        return keys
+    
+    default_keys = set()
+    for namespace, translations in default_translations.items():
+        namespace_keys = collect_keys(translations, namespace)
+        default_keys.update(namespace_keys)
+    
+    # Find missing keys in target locale(s)
+    missing_by_locale = {}
+    
+    target_locales = [locale] if locale else [
+        loc for loc in available_locales if loc != default_locale
+    ]
+    
+    for target_locale in target_locales:
+        if target_locale not in available_locales:
+            continue
+        
+        target_translations = translation_service._cache.get(target_locale, {})
+        target_keys = set()
+        
+        for namespace, translations in target_translations.items():
+            namespace_keys = collect_keys(translations, namespace)
+            target_keys.update(namespace_keys)
+        
+        missing_keys = default_keys - target_keys
+        if missing_keys:
+            missing_by_locale[target_locale] = sorted(list(missing_keys))
+    
+    response = MissingTranslationsResponse(missing_translations=missing_by_locale)
+    
+    total_missing = sum(len(keys) for keys in missing_by_locale.values())
+    api_logger.info(f"Found {total_missing} missing translations across {len(missing_by_locale)} locales")
+    
+    return success(data=response.dict(), msg=t("common.success.retrieved"))
+
+
+@router.post("/reload", response_model=ApiResponse)
+def reload_translations(
+    locale: Optional[str] = None,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Trigger hot reload of translation files (admin only).
+    
+    Args:
+        locale: Optional locale to reload (defaults to reloading all locales)
+        
+    Returns:
+        Reload status and statistics
+    """
+    api_logger.info(
+        f"Reload translations request: locale={locale or 'all'}, "
+        f"admin={current_user.username}"
+    )
+    
+    from app.core.config import settings
+    
+    if not settings.I18N_ENABLE_HOT_RELOAD:
+        api_logger.warning("Hot reload is disabled in configuration")
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail=t("i18n.reload.disabled")
+        )
+    
+    translation_service = get_translation_service()
+    
+    try:
+        # Reload translations
+        translation_service.reload(locale)
+        
+        # Get statistics
+        available_locales = translation_service.get_available_locales()
+        reloaded_locales = [locale] if locale else available_locales
+        
+        response = ReloadResponse(
+            success=True,
+            reloaded_locales=reloaded_locales,
+            total_locales=len(available_locales)
+        )
+        
+        api_logger.info(
+            f"Successfully reloaded translations for: {', '.join(reloaded_locales)}"
+        )
+        
+        return success(data=response.dict(), msg=t("i18n.reload.success"))
+        
+    except Exception as e:
+        api_logger.error(f"Failed to reload translations: {str(e)}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=t("i18n.reload.failed", error=str(e))
+        )
+
+
+# ============================================================================
+# Performance Monitoring APIs
+# ============================================================================
+
+@router.get("/metrics", response_model=ApiResponse)
+def get_metrics(
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Get i18n performance metrics (admin only).
+    
+    Returns:
+        Performance metrics including:
+        - Request counts
+        - Missing translations
+        - Timing statistics
+        - Locale usage
+        - Error counts
+    """
+    api_logger.info(f"Get metrics request: admin={current_user.username}")
+    
+    translation_service = get_translation_service()
+    metrics = translation_service.get_metrics_summary()
+    
+    api_logger.info("Returning i18n metrics")
+    return success(data=metrics, msg=t("common.success.retrieved"))
+
+
+@router.get("/metrics/cache", response_model=ApiResponse)
+def get_cache_stats(
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Get cache statistics (admin only).
+    
+    Returns:
+        Cache statistics including:
+        - Hit/miss rates
+        - LRU cache performance
+        - Loaded locales
+        - Memory usage
+    """
+    api_logger.info(f"Get cache stats request: admin={current_user.username}")
+    
+    translation_service = get_translation_service()
+    cache_stats = translation_service.get_cache_stats()
+    memory_usage = translation_service.get_memory_usage()
+    
+    data = {
+        "cache": cache_stats,
+        "memory": memory_usage
+    }
+    
+    api_logger.info("Returning cache statistics")
+    return success(data=data, msg=t("common.success.retrieved"))
+
+
+@router.get("/metrics/prometheus")
+def get_prometheus_metrics(
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Get metrics in Prometheus format (admin only).
+    
+    Returns:
+        Prometheus-formatted metrics as plain text
+    """
+    api_logger.info(f"Get Prometheus metrics request: admin={current_user.username}")
+    
+    from app.i18n.metrics import get_metrics
+    metrics = get_metrics()
+    prometheus_output = metrics.export_prometheus()
+    
+    from fastapi.responses import PlainTextResponse
+    return PlainTextResponse(content=prometheus_output)
+
+
+@router.post("/metrics/reset", response_model=ApiResponse)
+def reset_metrics(
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Reset all metrics (admin only).
+    
+    Returns:
+        Success message
+    """
+    api_logger.info(f"Reset metrics request: admin={current_user.username}")
+    
+    from app.i18n.metrics import get_metrics
+    metrics = get_metrics()
+    metrics.reset()
+    
+    translation_service = get_translation_service()
+    translation_service.cache.reset_stats()
+    
+    api_logger.info("Metrics reset completed")
+    return success(msg=t("i18n.metrics.reset_success"))
+
+
+# ============================================================================
+# Missing Translation Logging and Reporting APIs
+# ============================================================================
+
+@router.get("/logs/missing", response_model=ApiResponse)
+def get_missing_translation_logs(
+    locale: Optional[str] = None,
+    limit: Optional[int] = 100,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Get missing translation logs (admin only).
+    
+    Returns logged missing translations with context information.
+    
+    Args:
+        locale: Optional locale filter
+        limit: Maximum number of entries to return (default: 100)
+        
+    Returns:
+        Missing translation logs with context
+    """
+    api_logger.info(
+        f"Get missing translation logs request: locale={locale}, "
+        f"limit={limit}, admin={current_user.username}"
+    )
+    
+    translation_service = get_translation_service()
+    translation_logger = translation_service.translation_logger
+    
+    # Get missing translations
+    missing_translations = translation_logger.get_missing_translations(locale)
+    
+    # Get missing with context
+    missing_with_context = translation_logger.get_missing_with_context(locale, limit)
+    
+    # Get statistics
+    statistics = translation_logger.get_statistics()
+    
+    data = {
+        "missing_translations": missing_translations,
+        "recent_context": missing_with_context,
+        "statistics": statistics
+    }
+    
+    api_logger.info(
+        f"Returning {statistics['total_missing']} missing translations"
+    )
+    return success(data=data, msg=t("common.success.retrieved"))
+
+
+@router.get("/logs/missing/report", response_model=ApiResponse)
+def generate_missing_translation_report(
+    locale: Optional[str] = None,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Generate a comprehensive missing translation report (admin only).
+    
+    Args:
+        locale: Optional locale filter
+        
+    Returns:
+        Comprehensive report with missing translations and statistics
+    """
+    api_logger.info(
+        f"Generate missing translation report request: locale={locale}, "
+        f"admin={current_user.username}"
+    )
+    
+    translation_service = get_translation_service()
+    translation_logger = translation_service.translation_logger
+    
+    # Generate report
+    report = translation_logger.generate_report(locale)
+    
+    api_logger.info(
+        f"Generated report with {report['total_missing']} missing translations"
+    )
+    return success(data=report, msg=t("common.success.retrieved"))
+
+
+@router.post("/logs/missing/export", response_model=ApiResponse)
+def export_missing_translations(
+    locale: Optional[str] = None,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Export missing translations to JSON file (admin only).
+    
+    Args:
+        locale: Optional locale filter
+        
+    Returns:
+        Export status and file path
+    """
+    api_logger.info(
+        f"Export missing translations request: locale={locale}, "
+        f"admin={current_user.username}"
+    )
+    
+    from datetime import datetime
+    translation_service = get_translation_service()
+    translation_logger = translation_service.translation_logger
+    
+    # Generate filename with timestamp
+    timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
+    locale_suffix = f"_{locale}" if locale else "_all"
+    output_file = f"logs/i18n/missing_translations{locale_suffix}_{timestamp}.json"
+    
+    # Export to file
+    translation_logger.export_to_json(output_file)
+    
+    api_logger.info(f"Missing translations exported to: {output_file}")
+    return success(
+        data={"file_path": output_file},
+        msg=t("i18n.logs.export_success", file=output_file)
+    )
+
+
+@router.delete("/logs/missing", response_model=ApiResponse)
+def clear_missing_translation_logs(
+    locale: Optional[str] = None,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Clear missing translation logs (admin only).
+    
+    Args:
+        locale: Optional locale to clear (clears all if not specified)
+        
+    Returns:
+        Success message
+    """
+    api_logger.info(
+        f"Clear missing translation logs request: locale={locale or 'all'}, "
+        f"admin={current_user.username}"
+    )
+    
+    translation_service = get_translation_service()
+    translation_logger = translation_service.translation_logger
+    
+    # Clear logs
+    translation_logger.clear(locale)
+    
+    api_logger.info(f"Cleared missing translation logs for: {locale or 'all locales'}")
+    return success(msg=t("i18n.logs.clear_success"))

api/app/controllers/mcp_market_config_controller.py

@@ -19,7 +19,7 @@ from app.models import mcp_market_config_model
 from app.models.user_model import User
 from app.schemas import mcp_market_config_schema
 from app.schemas.response_schema import ApiResponse
-from app.services import mcp_market_config_service
+from app.services import mcp_market_config_service, mcp_market_service
 
 # Obtain a dedicated API logger
 api_logger = get_api_logger()
@@ -123,6 +123,17 @@ async def get_mcp_servers(
             "has_next": True if page * pagesize < total else False
         }
     }
+    # 5. Update mck_market.mcp_count
+    db_mcp_market = mcp_market_service.get_mcp_market_by_id(db, mcp_market_id=db_mcp_market_config.mcp_market_id, current_user=current_user)
+    if not db_mcp_market:
+        api_logger.warning(f"The mcp market does not exist or access is denied: mcp_market_id={db_mcp_market_config.mcp_market_id}")
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="The mcp market does not exist or access is denied"
+        )
+    db_mcp_market.mcp_count = total
+    db.commit()
+    db.refresh(db_mcp_market)
     return success(data=result, msg="Query of mcp servers list successful")
 
 
@@ -265,6 +276,30 @@ async def create_mcp_market_config(
                 status_code=status.HTTP_400_BAD_REQUEST,
                 detail=f"The mcp market id already exists: {create_data.mcp_market_id}"
             )
+        # 2. verify token
+        create_data.status = 1
+        try:
+            api = MCPApi()
+            token = create_data.token
+            api.login(token)
+
+            body = {
+                'filter': {},
+                'page_number': 1,
+                'page_size': 20,
+                'search': ""
+            }
+            cookies = api.get_cookies(token)
+            r = api.session.put(
+                url=api.mcp_base_url,
+                headers=api.builder_headers(api.headers),
+                json=body,
+                cookies=cookies)
+            raise_for_http_status(r)
+        except requests.exceptions.RequestException as e:
+            api_logger.error(f"Failed to get MCP servers: {str(e)}")
+            create_data.status = 0
+        # 3. create mcp_market_config
         db_mcp_market_config = mcp_market_config_service.create_mcp_market_config(db=db, mcp_market_config=create_data, current_user=current_user)
         api_logger.info(
             f"The mcp market config has been successfully created: (ID: {db_mcp_market_config.id})")
@@ -395,7 +430,7 @@ async def update_mcp_market_config(
             detail=f"The mcp market config update failed: {str(e)}"
         )
 
-    # 4. Return the updated mcp market config
+    # 5. Return the updated mcp market config
     return success(data=jsonable_encoder(mcp_market_config_schema.McpMarketConfig.model_validate(db_mcp_market_config)),
                    msg="The mcp market config information updated successfully")
 

api/app/controllers/memory_dashboard_controller.py

@@ -193,7 +193,15 @@ async def get_workspace_end_users(
         await aio_redis_set(cache_key, json.dumps(result), expire=30)
     except Exception as e:
         api_logger.warning(f"Redis 缓存写入失败: {str(e)}")
-    
+
+    # 触发社区聚类补全任务（异步，不阻塞接口响应）
+    try:
+        from app.tasks import init_community_clustering_for_users
+        init_community_clustering_for_users.delay(end_user_ids=end_user_ids, workspace_id=str(workspace_id))
+        api_logger.info(f"已触发社区聚类补全任务，候选用户数: {len(end_user_ids)}")
+    except Exception as e:
+        api_logger.warning(f"触发社区聚类补全任务失败（不影响主流程）: {str(e)}")
+
     api_logger.info(f"成功获取 {len(end_users)} 个宿主记录")
     return success(data=result, msg="宿主列表获取成功")
 
@@ -594,9 +602,12 @@ async def dashboard_data(
                 )
                 neo4j_data["total_memory"] = total_memory_data.get("total_memory_count", 0)
                 # total_app: 统计当前空间下的所有app数量
-                from app.repositories import app_repository
-                apps_orm = app_repository.get_apps_by_workspace_id(db, workspace_id)
-                neo4j_data["total_app"] = len(apps_orm)
+                # 包含自有app + 被分享给本工作空间的app
+                from app.services import app_service as _app_svc
+                _, total_app = _app_svc.AppService(db).list_apps(
+                    workspace_id=workspace_id, include_shared=True, pagesize=1
+                )
+                neo4j_data["total_app"] = total_app
                 api_logger.info(f"成功获取记忆总量: {neo4j_data['total_memory']}, 应用数量: {neo4j_data['total_app']}")
             except Exception as e:
                 api_logger.warning(f"获取记忆总量失败: {str(e)}")

api/app/controllers/memory_reflection_controller.py

@@ -1,3 +1,19 @@
+"""
+Memory Reflection Controller
+
+This module provides REST API endpoints for managing memory reflection configurations
+and operations. It handles reflection engine setup, configuration management, and
+execution of self-reflection processes across memory systems.
+
+Key Features:
+- Reflection configuration management (save, retrieve, update)
+- Workspace-wide reflection execution across multiple applications
+- Individual configuration-based reflection runs
+- Multi-language support for reflection outputs
+- Integration with Neo4j memory storage and LLM models
+- Comprehensive error handling and logging
+"""
+
 import asyncio
 import time
 import uuid
@@ -28,9 +44,13 @@ from sqlalchemy.orm import Session
 
 from app.utils.config_utils import resolve_config_id
 
+# Load environment variables for configuration
 load_dotenv()
+
+# Initialize API logger for request tracking and debugging
 api_logger = get_api_logger()
 
+# Configure router with prefix and tags for API organization
 router = APIRouter(
     prefix="/memory",
     tags=["Memory"],
@@ -43,7 +63,38 @@ async def save_reflection_config(
     current_user: User = Depends(get_current_user),
     db: Session = Depends(get_db),
 ) -> dict:
-    """Save reflection configuration to data_comfig table"""
+    """
+    Save reflection configuration to memory config table
+    
+    Persists reflection engine configuration settings to the data_config table,
+    including reflection parameters, model settings, and evaluation criteria.
+    Validates configuration parameters and ensures data consistency.
+    
+    Args:
+        request: Memory reflection configuration data including:
+            - config_id: Configuration identifier to update
+            - reflection_enabled: Whether reflection is enabled
+            - reflection_period_in_hours: Reflection execution interval
+            - reflexion_range: Scope of reflection (partial/all)
+            - baseline: Reflection strategy (time/fact/hybrid)
+            - reflection_model_id: LLM model for reflection operations
+            - memory_verify: Enable memory verification checks
+            - quality_assessment: Enable quality assessment evaluation
+        current_user: Authenticated user saving the configuration
+        db: Database session for data operations
+    
+    Returns:
+        dict: Success response with saved reflection configuration data
+        
+    Raises:
+        HTTPException 400: If config_id is missing or parameters are invalid
+        HTTPException 500: If configuration save operation fails
+        
+    Database Operations:
+        - Updates memory_config table with reflection settings
+        - Commits transaction and refreshes entity
+        - Maintains configuration consistency
+    """
     try:
         config_id = request.config_id
         config_id = resolve_config_id(config_id, db)
@@ -54,6 +105,7 @@ async def save_reflection_config(
             )
         api_logger.info(f"用户 {current_user.username} 保存反思配置，config_id: {config_id}")
 
+        # Update reflection configuration in database
         memory_config = MemoryConfigRepository.update_reflection_config(
             db,
             config_id=config_id,
@@ -66,6 +118,7 @@ async def save_reflection_config(
             quality_assessment=request.quality_assessment
         )
 
+        # Commit transaction and refresh entity
         db.commit()
         db.refresh(memory_config)
 
@@ -102,13 +155,55 @@ async def start_workspace_reflection(
     current_user: User = Depends(get_current_user),
     db: Session = Depends(get_db),
 ) -> dict:
-    """启动工作空间中所有匹配应用的反思功能"""
+    """
+    Start reflection functionality for all matching applications in workspace
+    
+    Initiates reflection processes across all applications within the user's current
+    workspace that have valid memory configurations. Processes each application's
+    configurations and associated end users, executing reflection operations
+    with proper error isolation and transaction management.
+    
+    This endpoint serves as a workspace-wide reflection orchestrator, ensuring
+    that reflection failures for individual users don't affect other operations.
+    
+    Args:
+        current_user: Authenticated user initiating workspace reflection
+        db: Database session for configuration queries
+    
+    Returns:
+        dict: Success response with reflection results for all processed applications:
+            - app_id: Application identifier
+            - config_id: Memory configuration identifier
+            - end_user_id: End user identifier
+            - reflection_result: Individual reflection operation result
+    
+    Processing Logic:
+        1. Retrieve all applications in the current workspace
+        2. Filter applications with valid memory configurations
+        3. For each configuration, find matching releases
+        4. Execute reflection for each end user with isolated transactions
+        5. Aggregate results with error handling per user
+    
+    Error Handling:
+        - Individual user reflection failures are isolated
+        - Failed operations are logged and included in results
+        - Database transactions are isolated per user to prevent cascading failures
+        - Comprehensive error reporting for debugging
+    
+    Raises:
+        HTTPException 500: If workspace reflection initialization fails
+        
+    Performance Notes:
+        - Uses independent database sessions for each user operation
+        - Prevents transaction failures from affecting other users
+        - Comprehensive logging for operation tracking
+    """
     workspace_id = current_user.current_workspace_id
 
     try:
         api_logger.info(f"用户 {current_user.username} 启动workspace反思，workspace_id: {workspace_id}")
 
-        # 使用独立的数据库会话来获取工作空间应用详情，避免事务失败
+        # Use independent database session to get workspace app details, avoiding transaction failures
         from app.db import get_db_context
         with get_db_context() as query_db:
             service = WorkspaceAppService(query_db)
@@ -116,8 +211,9 @@ async def start_workspace_reflection(
         
         reflection_results = []
         
+        # Process each application in the workspace
         for data in result['apps_detailed_info']:
-            # 跳过没有配置的应用
+            # Skip applications without configurations
             if not data['memory_configs']:
                 api_logger.debug(f"应用 {data['id']} 没有memory_configs，跳过")
                 continue
@@ -126,22 +222,22 @@ async def start_workspace_reflection(
             memory_configs = data['memory_configs']
             end_users = data['end_users']
 
-            # 为每个配置和用户组合执行反思
+            # Execute reflection for each configuration and user combination
             for config in memory_configs:
                 config_id_str = str(config['config_id'])
 
-                # 找到匹配此配置的所有release
+                # Find all releases matching this configuration
                 matching_releases = [r for r in releases if str(r['config']) == config_id_str]
 
                 if not matching_releases:
                     api_logger.debug(f"配置 {config_id_str} 没有匹配的release")
                     continue
 
-                # 为每个用户执行反思 - 使用独立的数据库会话
+                # Execute reflection for each user - using independent database sessions
                 for user in end_users:
                     api_logger.info(f"为用户 {user['id']} 启动反思，config_id: {config_id_str}")
 
-                    # 为每个用户创建独立的数据库会话，避免事务失败影响其他用户
+                    # Create independent database session for each user to avoid transaction failure impact
                     with get_db_context() as user_db:
                         try:
                             reflection_service = MemoryReflectionService(user_db)
@@ -184,14 +280,51 @@ async def start_reflection_configs(
         current_user: User = Depends(get_current_user),
         db: Session = Depends(get_db),
 ) -> dict:
-    """通过config_id查询memory_config表中的反思配置信息"""
+    """
+    Query reflection configuration information by config_id
+    
+    Retrieves detailed reflection configuration settings from the memory_config
+    table for a specific configuration ID. Provides comprehensive reflection
+    parameters including model settings, evaluation criteria, and operational flags.
+    
+    Args:
+        config_id: Configuration identifier (UUID or integer) to query
+        current_user: Authenticated user making the request
+        db: Database session for data operations
+    
+    Returns:
+        dict: Success response with detailed reflection configuration:
+            - config_id: Resolved configuration identifier
+            - reflection_enabled: Whether reflection is enabled for this config
+            - reflection_period_in_hours: Reflection execution interval
+            - reflexion_range: Scope of reflection operations (partial/all)
+            - baseline: Reflection strategy (time/fact/hybrid)
+            - reflection_model_id: LLM model identifier for reflection
+            - memory_verify: Memory verification flag
+            - quality_assessment: Quality assessment flag
+    
+    Database Operations:
+        - Queries memory_config table by resolved config_id
+        - Retrieves all reflection-related configuration fields
+        - Resolves configuration ID for consistent formatting
+    
+    Raises:
+        HTTPException 404: If configuration with specified ID is not found
+        HTTPException 500: If configuration query operation fails
+        
+    ID Resolution:
+        - Supports both UUID and integer config_id formats
+        - Automatically resolves to appropriate internal format
+        - Maintains consistency across different ID representations
+    """
     config_id = resolve_config_id(config_id, db)
     try:
         config_id=resolve_config_id(config_id,db)
         api_logger.info(f"用户 {current_user.username} 查询反思配置，config_id: {config_id}")
         result = MemoryConfigRepository.query_reflection_config_by_id(db, config_id)
         memory_config_id = resolve_config_id(result.config_id, db)
-        # 构建返回数据
+        
+        # Build response data with comprehensive configuration details
         reflection_config = {
             "config_id": memory_config_id,
             "reflection_enabled": result.enable_self_reflexion,
@@ -204,10 +337,12 @@ async def start_reflection_configs(
         }
         api_logger.info(f"成功查询反思配置，config_id: {config_id}")
         return success(data=reflection_config, msg="反思配置查询成功")
-        
 
+        api_logger.info(f"Successfully queried reflection config, config_id: {config_id}")
+        return success(data=reflection_config, msg="Reflection configuration query successful")
+        
     except HTTPException:
-        # 重新抛出HTTP异常
+        # Re-raise HTTP exceptions without modification
         raise
     except Exception as e:
         api_logger.error(f"查询反思配置失败: {str(e)}")
@@ -223,13 +358,66 @@ async def reflection_run(
     current_user: User = Depends(get_current_user),
     db: Session = Depends(get_db),
 ) -> dict:
-    """Activate the reflection function for all matching applications in the workspace"""
-    # 使用集中化的语言校验
+    """
+    Execute reflection engine with specified configuration
+    
+    Runs the reflection engine using configuration parameters from the database.
+    Validates model availability, sets up the reflection engine with proper
+    configuration, and executes the reflection process with multi-language support.
+    
+    This endpoint provides a test run capability for reflection configurations,
+    allowing users to validate their reflection settings and see results before
+    deploying to production environments.
+    
+    Args:
+        config_id: Configuration identifier (UUID or integer) for reflection settings
+        language_type: Language preference header for output localization (optional)
+        current_user: Authenticated user executing the reflection
+        db: Database session for configuration queries
+    
+    Returns:
+        dict: Success response with reflection execution results including:
+            - baseline: Reflection strategy used
+            - source_data: Input data processed
+            - memory_verifies: Memory verification results (if enabled)
+            - quality_assessments: Quality assessment results (if enabled)
+            - reflexion_data: Generated reflection insights and solutions
+    
+    Configuration Validation:
+        - Verifies configuration exists in database
+        - Validates LLM model availability
+        - Falls back to default model if specified model is unavailable
+        - Ensures all required parameters are properly set
+    
+    Reflection Engine Setup:
+        - Creates ReflectionConfig with database parameters
+        - Initializes Neo4j connector for memory access
+        - Sets up ReflectionEngine with validated model
+        - Configures language preferences for output
+    
+    Error Handling:
+        - Model validation with fallback to default
+        - Configuration validation and error reporting
+        - Comprehensive logging for debugging
+        - Graceful handling of missing configurations
+    
+    Raises:
+        HTTPException 404: If configuration is not found
+        HTTPException 500: If reflection execution fails
+        
+    Performance Notes:
+        - Direct database query for configuration retrieval
+        - Model validation to prevent runtime failures
+        - Efficient reflection engine initialization
+        - Language-aware output processing
+    """
+    # Use centralized language validation for consistent localization
     language = get_language_from_header(language_type)
 
     api_logger.info(f"用户 {current_user.username} 查询反思配置，config_id: {config_id}")
     config_id = resolve_config_id(config_id, db)
-    # 使用MemoryConfigRepository查询反思配置
+    
+    # Query reflection configuration using MemoryConfigRepository
     result = MemoryConfigRepository.query_reflection_config_by_id(db, config_id)
     if not result:
         raise HTTPException(
@@ -239,7 +427,7 @@ async def reflection_run(
 
     api_logger.info(f"成功查询反思配置，config_id: {config_id}")
 
-    # 验证模型ID是否存在
+    # Validate model ID existence
     model_id = result.reflection_model_id
     if model_id:
         try:
@@ -250,6 +438,7 @@ async def reflection_run(
             # 可以设置为None，让反思引擎使用默认模型
             model_id = None
 
+    # Create reflection configuration with database parameters
     config = ReflectionConfig(
         enabled=result.enable_self_reflexion,
         iteration_period=result.iteration_period,
@@ -262,11 +451,13 @@ async def reflection_run(
         model_id=model_id,
         language_type=language_type
     )
+    
+    # Initialize Neo4j connector and reflection engine
     connector = Neo4jConnector()
     engine = ReflectionEngine(
         config=config,
         neo4j_connector=connector,
-        llm_client=model_id  # 传入验证后的 model_id
+        llm_client=model_id  # Pass validated model_id
     )
 
     result=await (engine.reflection_run())

api/app/controllers/memory_short_term_controller.py

@@ -1,3 +1,18 @@
+"""
+Memory Short Term Controller
+
+This module provides REST API endpoints for managing short-term and long-term memory
+data retrieval and analysis. It handles memory system statistics, data aggregation,
+and provides comprehensive memory insights for end users.
+
+Key Features:
+- Short-term memory data retrieval and statistics
+- Long-term memory data aggregation
+- Entity count integration
+- Multi-language response support
+- Memory system analytics and reporting
+"""
+
 from typing import Optional
 
 from dotenv import load_dotenv
@@ -13,9 +28,13 @@ from app.models.user_model import User
 from app.services.memory_short_service import LongService, ShortService
 from app.services.memory_storage_service import search_entity
 
+# Load environment variables for configuration
 load_dotenv()
+
+# Initialize API logger for request tracking and debugging
 api_logger = get_api_logger()
 
+# Configure router with prefix and tags for API organization
 router = APIRouter(
     prefix="/memory/short",
     tags=["Memory"],
@@ -27,24 +46,73 @@ async def short_term_configs(
         current_user: User = Depends(get_current_user),
         db: Session = Depends(get_db),
 ):
-    # 使用集中化的语言校验
+    """
+    Retrieve comprehensive short-term and long-term memory statistics
+    
+    Provides a comprehensive overview of memory system data for a specific end user,
+    including short-term memory entries, long-term memory aggregations, entity counts,
+    and retrieval statistics. Supports multi-language responses based on request headers.
+    
+    This endpoint serves as a central dashboard for memory system analytics, combining
+    data from multiple memory subsystems to provide a holistic view of user memory state.
+    
+    Args:
+        end_user_id: Unique identifier for the end user whose memory data to retrieve
+        language_type: Language preference header for response localization (optional)
+        current_user: Authenticated user making the request (injected by dependency)
+        db: Database session for data operations (injected by dependency)
+    
+    Returns:
+        dict: Success response containing comprehensive memory statistics:
+            - short_term: List of short-term memory entries with detailed data
+            - long_term: List of long-term memory aggregations and summaries
+            - entity: Count of entities associated with the end user
+            - retrieval_number: Total count of short-term memory retrievals
+            - long_term_number: Total count of long-term memory entries
+    
+    Response Structure:
+        {
+            "code": 200,
+            "msg": "Short-term memory system data retrieved successfully",
+            "data": {
+                "short_term": [...],      # Short-term memory entries
+                "long_term": [...],       # Long-term memory data
+                "entity": 42,             # Entity count
+                "retrieval_number": 156,  # Short-term retrieval count
+                "long_term_number": 23    # Long-term memory count
+            }
+        }
+    
+    Raises:
+        HTTPException: If end_user_id is invalid or data retrieval fails
+        
+    Performance Notes:
+        - Combines multiple service calls for comprehensive data
+        - Entity search is performed asynchronously for better performance
+        - Response time depends on memory data volume for the specified user
+    """
+    # Use centralized language validation for consistent localization
     language = get_language_from_header(language_type)
     
-    # 获取短期记忆数据
-    short_term=ShortService(end_user_id, db)
-    short_result=short_term.get_short_databasets()
-    short_count=short_term.get_short_count()
+    # Retrieve short-term memory data and statistics
+    short_term = ShortService(end_user_id, db)
+    short_result = short_term.get_short_databasets()  # Get short-term memory entries
+    short_count = short_term.get_short_count()        # Get short-term retrieval count
 
-    long_term=LongService(end_user_id, db)
-    long_result=long_term.get_long_databasets()
+    # Retrieve long-term memory data and aggregations
+    long_term = LongService(end_user_id, db)
+    long_result = long_term.get_long_databasets()     # Get long-term memory entries
 
+    # Get entity count for the specified end user
     entity_result = await search_entity(end_user_id)
+    
+    # Compile comprehensive memory statistics response
     result = {
-        'short_term': short_result,
-        'long_term': long_result,
-        'entity': entity_result.get('num', 0),
-        "retrieval_number":short_count,
-        "long_term_number":len(long_result)
+        'short_term': short_result,                    # Short-term memory entries
+        'long_term': long_result,                      # Long-term memory data
+        'entity': entity_result.get('num', 0),        # Entity count (default to 0 if not found)
+        "retrieval_number": short_count,               # Short-term retrieval statistics
+        "long_term_number": len(long_result)          # Long-term memory entry count
     }
 
     return success(data=result, msg="短期记忆系统数据获取成功")

api/app/controllers/memory_working_controller.py

@@ -8,6 +8,7 @@ from app.core.response_utils import success
 from app.db import get_db
 from app.dependencies import get_current_user
 from app.models import User
+from app.schemas import conversation_schema
 from app.schemas.response_schema import ApiResponse
 from app.services.conversation_service import ConversationService
 
@@ -32,35 +33,47 @@ def get_memory_count(
 @router.get("/{end_user_id}/conversations", response_model=ApiResponse)
 def get_conversations(
         end_user_id: uuid.UUID,
+        page: int = 1,
+        pagesize: int = 20,
         current_user: User = Depends(get_current_user),
         db: Session = Depends(get_db)
 ):
     """
-    Retrieve all conversations for the current user in a specific group.
+    Retrieve conversations for the current user in a specific group with pagination.
 
     Args:
         end_user_id (UUID): The group identifier.
+        page (int): Page number (1-based). Defaults to 1.
+        pagesize (int): Number of items per page. Defaults to 20.
         current_user (User, optional): The authenticated user.
         db (Session, optional): SQLAlchemy session.
 
     Returns:
-        ApiResponse: Contains a list of conversation IDs.
-
-    Notes:
-        - Initializes the ConversationService with the current DB session.
-        - Returns only conversation IDs for lightweight response.
-        - Logs can be added to trace requests in production.
+        ApiResponse: Contains a paginated list of conversations.
     """
+    page = max(1, page)
+    page_size = max(1, min(pagesize, 100))  # Limit page size between 1 and 100
     conversation_service = ConversationService(db)
-    conversations = conversation_service.get_user_conversations(
-        end_user_id
+    conversations, total = conversation_service.get_user_conversations(
+        end_user_id,
+        page=page,
+        page_size=page_size
     )
-    return success(data=[
-        {
-            "id": conversation.id,
-            "title": conversation.title
-        } for conversation in conversations
-    ], msg="get conversations success")
+    return success(data={
+        "items": [
+            {
+                "id": conversation.id,
+                "title": conversation.title
+            } for conversation in conversations
+        ],
+        "total": total,
+        "page": {
+            "page": page,
+            "pagesize": page_size,
+            "total": total,
+            "hasnext": (page * page_size) < total
+        },
+    }, msg="get conversations success")
 
 
 @router.get("/{end_user_id}/messages", response_model=ApiResponse)
@@ -90,11 +103,7 @@ def get_messages(
         conversation_id,
     )
     messages = [
-        {
-            "role": message.role,
-            "content": message.content,
-            "created_at": int(message.created_at.timestamp() * 1000),
-        }
+        conversation_schema.Message.model_validate(message)
         for message in messages_obj
     ]
     return success(data=messages, msg="get conversation history success")

api/app/controllers/public_share_controller.py

@@ -13,7 +13,6 @@ from app.core.logging_config import get_business_logger
 from app.core.response_utils import success, fail
 from app.db import get_db, get_db_read
 from app.dependencies import get_share_user_id, ShareTokenData
-from app.models.app_model import App
 from app.models.app_model import AppType
 from app.repositories import knowledge_repository
 from app.repositories.end_user_repository import EndUserRepository
@@ -22,6 +21,7 @@ from app.schemas import release_share_schema, conversation_schema
 from app.schemas.response_schema import PageData, PageMeta
 from app.services import workspace_service
 from app.services.app_chat_service import AppChatService, get_app_chat_service
+from app.services.app_service import AppService
 from app.services.auth_service import create_access_token
 from app.services.conversation_service import ConversationService
 from app.services.release_share_service import ReleaseShareService
@@ -215,8 +215,11 @@ def list_conversations(
     service = SharedChatService(db)
     share, release = service.get_release_by_share_token(share_data.share_token, password)
     end_user_repo = EndUserRepository(db)
+    app_service = AppService(db)
+    app = app_service._get_app_or_404(share.app_id)
     new_end_user = end_user_repo.get_or_create_end_user(
         app_id=share.app_id,
+        workspace_id=app.workspace_id,
         other_id=other_id
     )
     logger.debug(new_end_user.id)
@@ -308,25 +311,29 @@ async def chat(
 
         # Store end_user_id in database with original user_id
         end_user_repo = EndUserRepository(db)
+        app_service = AppService(db)
+        app = app_service._get_app_or_404(share.app_id)
+        workspace_id = app.workspace_id
         new_end_user = end_user_repo.get_or_create_end_user(
             app_id=share.app_id,
+            workspace_id=workspace_id,
             other_id=other_id,
-            original_user_id=user_id  # Save original user_id to other_id
+            original_user_id=user_id
         )
         end_user_id = str(new_end_user.id)
 
-        appid = share.app_id
+        # appid = share.app_id
         """获取存储类型和工作空间的ID"""
 
         # 直接通过 SQLAlchemy 查询 app（仅查询未删除的应用）
-        app = db.query(App).filter(
-            App.id == appid,
-            App.is_active.is_(True)
-        ).first()
-        if not app:
-            raise BusinessException("应用不存在", BizCode.APP_NOT_FOUND)
+        # app = db.query(App).filter(
+        #     App.id == appid,
+        #     App.is_active.is_(True)
+        # ).first()
+        # if not app:
+        #     raise BusinessException("应用不存在", BizCode.APP_NOT_FOUND)
 
-        workspace_id = app.workspace_id
+        # workspace_id = app.workspace_id
 
         # 直接从 workspace 获取 storage_type（公开分享场景无需权限检查）
         storage_type = workspace_service.get_workspace_storage_type_without_auth(
@@ -610,11 +617,11 @@ async def chat(
 
         # 多 Agent 非流式返回
         result = await app_chat_service.workflow_chat(
-
             message=payload.message,
             conversation_id=conversation.id,  # 使用已创建的会话 ID
             user_id=end_user_id,  # 转换为字符串
             variables=payload.variables,
+            files=payload.files,
             config=config,
             web_search=payload.web_search,
             memory=payload.memory,
@@ -654,17 +661,21 @@ async def config_query(
         workflow_service = WorkflowService(db)
         content = {
             "app_type": release.app.type,
-            "variables": workflow_service.get_start_node_variables(release.config)
+            "variables": workflow_service.get_start_node_variables(release.config),
+            "memory":  workflow_service.is_memory_enable(release.config),
+            "features": release.config.get("features")
         }
     elif release.app.type == AppType.AGENT:
         content = {
             "app_type": release.app.type,
-            "variables": release.config.get("variables")
+            "variables": release.config.get("variables"),
+            "features": release.config.get("features")
         }
     elif release.app.type == AppType.MULTI_AGENT:
         content = {
             "app_type": release.app.type,
-            "variables": []
+            "variables": [],
+            "features": release.config.get("features")
         }
     else:
         return fail(msg="Unsupported app type", code=BizCode.APP_TYPE_NOT_SUPPORTED)

api/app/controllers/service/app_api_controller.py

@@ -95,8 +95,8 @@ async def chat(
     end_user_repo = EndUserRepository(db)
     new_end_user = end_user_repo.get_or_create_end_user(
         app_id=app.id,
+        workspace_id=workspace_id,
         other_id=other_id,
-        original_user_id=other_id  # Save original user_id to other_id
     )
     end_user_id = str(new_end_user.id)
     web_search = True
@@ -280,6 +280,7 @@ async def chat(
             memory=memory,
             storage_type=storage_type,
             user_rag_memory_id=user_rag_memory_id,
+            files=payload.files,
             app_id=app.id,
             workspace_id=workspace_id,
             release_id=app.current_release.id

api/app/controllers/tool_controller.py

@@ -3,8 +3,11 @@ from typing import Optional
 
 from fastapi import APIRouter, Depends, HTTPException, Query
 from sqlalchemy.orm import Session
+
+from app.core.error_codes import BizCode
 from app.schemas.tool_schema import (
-    ToolCreateRequest, ToolUpdateRequest, ToolExecuteRequest, ParseSchemaRequest, CustomToolTestRequest
+    ToolCreateRequest, ToolUpdateRequest, ToolExecuteRequest, ParseSchemaRequest,
+    CustomToolTestRequest, ToolActiveUpdate
 )
 
 from app.core.response_utils import success
@@ -73,6 +76,8 @@ async def get_tool_methods(
         if methods is None:
             raise HTTPException(status_code=404, detail="工具不存在")
         return success(data=methods, msg="获取工具方法成功")
+    except HTTPException:
+        raise
     except Exception as e:
         raise HTTPException(status_code=500, detail=str(e))
 
@@ -118,6 +123,8 @@ async def create_tool(
         raise HTTPException(status_code=400, detail=e.message)
     except ValueError as e:
         raise HTTPException(status_code=400, detail=str(e))
+    except HTTPException:
+        raise
     except Exception as e:
         raise HTTPException(status_code=500, detail=str(e))
 
@@ -146,6 +153,8 @@ async def update_tool(
         return success(msg="工具更新成功")
     except ValueError as e:
         raise HTTPException(status_code=400, detail=str(e))
+    except HTTPException:
+        raise
     except Exception as e:
         raise HTTPException(status_code=500, detail=str(e))
 
@@ -156,7 +165,7 @@ async def delete_tool(
         current_user: User = Depends(get_current_user),
         service: ToolService = Depends(get_tool_service)
 ):
-    """删除工具"""
+    """删除工具（逻辑删除，is_active=False）"""
     try:
         success_flag = service.delete_tool(tool_id, current_user.tenant_id)
         if not success_flag:
@@ -168,6 +177,32 @@ async def delete_tool(
         raise HTTPException(status_code=500, detail=str(e))
 
 
+@router.patch("/{tool_id}/active", response_model=ApiResponse)
+async def set_tool_active(
+        tool_id: str,
+        request: ToolActiveUpdate,
+        current_user: User = Depends(get_current_user),
+        service: ToolService = Depends(get_tool_service)
+):
+    """设置工具可用状态（启用/禁用）
+
+    - is_active=true: 启用工具
+    - is_active=false: 禁用工具（等同于删除，但可恢复）
+    """
+    try:
+        success_flag = service.set_tool_active(tool_id, current_user.tenant_id, request.is_active)
+        if not success_flag:
+            raise HTTPException(status_code=404, detail="工具不存在")
+        action = "启用" if request.is_active else "禁用"
+        return success(msg=f"工具已{action}")
+    except ValueError as e:
+        raise HTTPException(status_code=400, detail=str(e))
+    except HTTPException:
+        raise
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=str(e))
+
+
 @router.post("/execution/execute", response_model=ApiResponse)
 async def execute_tool(
         request: ToolExecuteRequest,
@@ -196,6 +231,8 @@ async def execute_tool(
             },
             msg="工具执行完成"
         )
+    except HTTPException:
+        raise
     except Exception as e:
         raise HTTPException(status_code=500, detail=str(e))
 
@@ -225,8 +262,10 @@ async def sync_mcp_tools(
     try:
         result = await service.sync_mcp_tools(tool_id, current_user.tenant_id)
         if not result.get("success", False):
-            raise HTTPException(status_code=400, detail=result.get("message", "同步失败"))
+            raise BusinessException(result.get("message", "工具列表同步失败"), BizCode.BAD_REQUEST)
         return success(data=result, msg="MCP工具列表同步完成")
+    except BusinessException:
+        raise
     except Exception as e:
         raise HTTPException(status_code=500, detail=str(e))
 
@@ -249,8 +288,10 @@ async def test_tool_connection(
             # 普通连接测试
             result = await service.test_connection(tool_id, current_user.tenant_id)
         if result["success"] is False:
-            raise HTTPException(status_code=400, detail=result["message"])
+            raise BusinessException(result["message"], BizCode.SERVICE_UNAVAILABLE)
         return success(data=result, msg="连接测试完成")
+    except BusinessException:
+        raise
     except Exception as e:
         raise HTTPException(status_code=500, detail=str(e))
 

api/app/controllers/user_controller.py

@@ -1,6 +1,7 @@
 from fastapi import APIRouter, Depends
 from sqlalchemy.orm import Session
 import uuid
+from typing import Callable
 
 from app.core.error_codes import BizCode
 from app.core.exceptions import BusinessException
@@ -19,6 +20,7 @@ from app.services import user_service
 from app.core.logging_config import get_api_logger
 from app.core.response_utils import success
 from app.core.security import verify_password
+from app.i18n.dependencies import get_translator
 
 # 获取API专用日志器
 api_logger = get_api_logger()
@@ -33,7 +35,8 @@ router = APIRouter(
 def create_superuser(
     user: user_schema.UserCreate,
     db: Session = Depends(get_db),
-    current_superuser: User = Depends(get_current_superuser)
+    current_superuser: User = Depends(get_current_superuser),
+    t: Callable = Depends(get_translator)
 ):
     """创建超级管理员（仅超级管理员可访问）"""
     api_logger.info(f"超级管理员创建请求: {user.username}, email: {user.email}")
@@ -42,7 +45,7 @@ def create_superuser(
     api_logger.info(f"超级管理员创建成功: {result.username} (ID: {result.id})")
     
     result_schema = user_schema.User.model_validate(result)
-    return success(data=result_schema, msg="超级管理员创建成功")
+    return success(data=result_schema, msg=t("users.create.superuser_success"))
 
 
 @router.delete("/{user_id}", response_model=ApiResponse)
@@ -50,6 +53,7 @@ def delete_user(
     user_id: uuid.UUID,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    t: Callable = Depends(get_translator)
 ):
     """停用用户（软删除）"""
     api_logger.info(f"用户停用请求: user_id={user_id}, 操作者: {current_user.username}")
@@ -57,13 +61,14 @@ def delete_user(
         db=db, user_id_to_deactivate=user_id, current_user=current_user
     )
     api_logger.info(f"用户停用成功: {result.username} (ID: {result.id})")
-    return success(msg="用户停用成功")
+    return success(msg=t("users.delete.deactivate_success"))
 
 @router.post("/{user_id}/activate", response_model=ApiResponse)
 def activate_user(
     user_id: uuid.UUID,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    t: Callable = Depends(get_translator)
 ):
     """激活用户"""
     api_logger.info(f"用户激活请求: user_id={user_id}, 操作者: {current_user.username}")
@@ -74,13 +79,14 @@ def activate_user(
     api_logger.info(f"用户激活成功: {result.username} (ID: {result.id})")
     
     result_schema = user_schema.User.model_validate(result)
-    return success(data=result_schema, msg="用户激活成功")
+    return success(data=result_schema, msg=t("users.activate.success"))
 
 
 @router.get("", response_model=ApiResponse)
 def get_current_user_info(
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    t: Callable = Depends(get_translator)
 ):
     """获取当前用户信息"""
     api_logger.info(f"当前用户信息请求: {current_user.username}")
@@ -105,7 +111,7 @@ def get_current_user_info(
                 break
     
     api_logger.info(f"当前用户信息获取成功: {result.username}, 角色: {result_schema.role}, 工作空间: {result_schema.current_workspace_name}")
-    return success(data=result_schema, msg="用户信息获取成功")
+    return success(data=result_schema, msg=t("users.info.get_success"))
 
 
 @router.get("/superusers", response_model=ApiResponse)
@@ -113,6 +119,7 @@ def get_tenant_superusers(
     include_inactive: bool = False,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_superuser),
+    t: Callable = Depends(get_translator)
 ):
     """获取当前租户下的超管账号列表（仅超级管理员可访问）"""
     api_logger.info(f"获取租户超管列表请求: {current_user.username}")
@@ -125,7 +132,7 @@ def get_tenant_superusers(
     api_logger.info(f"租户超管列表获取成功: count={len(superusers)}")
     
     superusers_schema = [user_schema.User.model_validate(u) for u in superusers]
-    return success(data=superusers_schema, msg="租户超管列表获取成功")
+    return success(data=superusers_schema, msg=t("users.list.superusers_success"))
 
 
 
@@ -134,6 +141,7 @@ def get_user_info_by_id(
     user_id: uuid.UUID,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    t: Callable = Depends(get_translator)
 ):
     """根据用户ID获取用户信息"""
     api_logger.info(f"获取用户信息请求: user_id={user_id}, 操作者: {current_user.username}")
@@ -144,7 +152,7 @@ def get_user_info_by_id(
     api_logger.info(f"用户信息获取成功: {result.username}")
     
     result_schema = user_schema.User.model_validate(result)
-    return success(data=result_schema, msg="用户信息获取成功")
+    return success(data=result_schema, msg=t("users.info.get_success"))
 
 
 @router.put("/change-password", response_model=ApiResponse)
@@ -152,6 +160,7 @@ async def change_password(
     request: ChangePasswordRequest,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    t: Callable = Depends(get_translator)
 ):
     """修改当前用户密码"""
     api_logger.info(f"用户密码修改请求: {current_user.username}")
@@ -164,7 +173,7 @@ async def change_password(
         current_user=current_user
     )
     api_logger.info(f"用户密码修改成功: {current_user.username}")
-    return success(msg="密码修改成功")
+    return success(msg=t("auth.password.change_success"))
 
 
 @router.put("/admin/change-password", response_model=ApiResponse)
@@ -172,6 +181,7 @@ async def admin_change_password(
     request: AdminChangePasswordRequest,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_superuser),
+    t: Callable = Depends(get_translator)
 ):
     """超级管理员修改指定用户的密码"""
     api_logger.info(f"管理员密码修改请求: 管理员 {current_user.username} 修改用户 {request.user_id}")
@@ -186,16 +196,17 @@ async def admin_change_password(
     # 根据是否生成了随机密码来构造响应
     if request.new_password:
         api_logger.info(f"管理员密码修改成功: 用户 {request.user_id}")
-        return success(msg="密码修改成功")
+        return success(msg=t("auth.password.change_success"))
     else:
         api_logger.info(f"管理员密码重置成功: 用户 {request.user_id}, 随机密码已生成")
-        return success(data=generated_password, msg="密码重置成功")
+        return success(data=generated_password, msg=t("auth.password.reset_success"))
 
 
 @router.post("/verify_pwd", response_model=ApiResponse)
 def verify_pwd(
     request: VerifyPasswordRequest,
     current_user: User = Depends(get_current_user),
+    t: Callable = Depends(get_translator)
 ):
     """验证当前用户密码"""
     api_logger.info(f"用户验证密码请求: {current_user.username}")
@@ -203,8 +214,8 @@ def verify_pwd(
     is_valid = verify_password(request.password, current_user.hashed_password)
     api_logger.info(f"用户密码验证结果: {current_user.username}, valid={is_valid}")
     if not is_valid:
-        raise BusinessException("密码验证失败", code=BizCode.VALIDATION_FAILED)
-    return success(data={"valid": is_valid}, msg="验证完成")
+        raise BusinessException(t("users.errors.password_verification_failed"), code=BizCode.VALIDATION_FAILED)
+    return success(data={"valid": is_valid}, msg=t("common.success.retrieved"))
 
 
 @router.post("/send-email-code", response_model=ApiResponse)
@@ -212,6 +223,7 @@ async def send_email_code(
     request: SendEmailCodeRequest,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    t: Callable = Depends(get_translator)
 ):
     """发送邮箱验证码"""
     api_logger.info(f"用户请求发送邮箱验证码: {current_user.username}, email={request.email}")
@@ -219,7 +231,7 @@ async def send_email_code(
     await user_service.send_email_code_method(db=db, email=request.email, user_id=current_user.id)
     
     api_logger.info(f"邮箱验证码已发送: {current_user.username}")
-    return success(msg="验证码已发送到您的邮箱，请查收")
+    return success(msg=t("users.email.code_sent"))
 
 
 @router.put("/change-email", response_model=ApiResponse)
@@ -227,6 +239,7 @@ async def change_email(
     request: VerifyEmailCodeRequest,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    t: Callable = Depends(get_translator)
 ):
     """验证验证码并修改邮箱"""
     api_logger.info(f"用户修改邮箱: {current_user.username}, new_email={request.new_email}")
@@ -239,4 +252,51 @@ async def change_email(
     )
     
     api_logger.info(f"用户邮箱修改成功: {current_user.username}")
-    return success(msg="邮箱修改成功")
+    return success(msg=t("users.email.change_success"))
+
+
+
+@router.get("/me/language", response_model=ApiResponse)
+def get_current_user_language(
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+    t: Callable = Depends(get_translator)
+):
+    """获取当前用户的语言偏好"""
+    api_logger.info(f"获取用户语言偏好: {current_user.username}")
+    
+    language = user_service.get_user_language_preference(
+        db=db,
+        user_id=current_user.id,
+        current_user=current_user
+    )
+    
+    api_logger.info(f"用户语言偏好获取成功: {current_user.username}, language={language}")
+    return success(
+        data=user_schema.LanguagePreferenceResponse(language=language),
+        msg=t("users.language.get_success")
+    )
+
+
+@router.put("/me/language", response_model=ApiResponse)
+def update_current_user_language(
+    request: user_schema.LanguagePreferenceRequest,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+    t: Callable = Depends(get_translator)
+):
+    """设置当前用户的语言偏好"""
+    api_logger.info(f"更新用户语言偏好: {current_user.username}, language={request.language}")
+    
+    updated_user = user_service.update_user_language_preference(
+        db=db,
+        user_id=current_user.id,
+        language=request.language,
+        current_user=current_user
+    )
+    
+    api_logger.info(f"用户语言偏好更新成功: {current_user.username}, language={request.language}")
+    return success(
+        data=user_schema.LanguagePreferenceResponse(language=updated_user.preferred_language),
+        msg=t("users.language.update_success")
+    )

api/app/controllers/user_memory_controllers.py

@@ -17,6 +17,7 @@ from app.services.user_memory_service import (
     UserMemoryService,
     analytics_memory_types,
     analytics_graph_data,
+    analytics_community_graph_data,
 )
 from app.services.memory_entity_relationship_service import MemoryEntityService,MemoryEmotion,MemoryInteraction
 from app.schemas.response_schema import ApiResponse
@@ -295,6 +296,42 @@ async def get_graph_data_api(
         return fail(BizCode.INTERNAL_ERROR, "图数据查询失败", str(e))
 
 
+@router.get("/analytics/community_graph", response_model=ApiResponse)
+async def get_community_graph_data_api(
+    end_user_id: str,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db),
+) -> dict:
+    workspace_id = current_user.current_workspace_id
+
+    if workspace_id is None:
+        api_logger.warning(f"用户 {current_user.username} 尝试查询社区图谱但未选择工作空间")
+        return fail(BizCode.INVALID_PARAMETER, "请先切换到一个工作空间", "current_workspace_id is None")
+
+    api_logger.info(
+        f"社区图谱查询请求: end_user_id={end_user_id}, user={current_user.username}, "
+        f"workspace={workspace_id}"
+    )
+
+    try:
+        result = await analytics_community_graph_data(db=db, end_user_id=end_user_id)
+
+        if "message" in result and result["statistics"]["total_nodes"] == 0:
+            api_logger.warning(f"社区图谱查询返回空结果: {result.get('message')}")
+            return success(data=result, msg=result.get("message", "查询成功"))
+
+        api_logger.info(
+            f"成功获取社区图谱: end_user_id={end_user_id}, "
+            f"nodes={result['statistics']['total_nodes']}, "
+            f"edges={result['statistics']['total_edges']}"
+        )
+        return success(data=result, msg="查询成功")
+
+    except Exception as e:
+        api_logger.error(f"社区图谱查询失败: end_user_id={end_user_id}, error={str(e)}")
+        return fail(BizCode.INTERNAL_ERROR, "社区图谱查询失败", str(e))
+
+
 @router.get("/read_end_user/profile", response_model=ApiResponse)
 async def get_end_user_profile(
     end_user_id: str,

api/app/controllers/workspace_controller.py

@@ -14,6 +14,12 @@ from app.dependencies import (
     get_current_user,
     workspace_access_guard,
 )
+from app.i18n.dependencies import get_current_language, get_translator
+from app.i18n.serializers import (
+    WorkspaceSerializer,
+    WorkspaceMemberSerializer,
+    WorkspaceInviteSerializer
+)
 from app.models.tenant_model import Tenants
 from app.models.user_model import User
 from app.models.workspace_model import InviteStatus
@@ -65,7 +71,9 @@ def get_workspaces(
     include_current: bool = Query(True, description="是否包含当前工作空间"),
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
-    current_tenant: Tenants = Depends(get_current_tenant)
+    current_tenant: Tenants = Depends(get_current_tenant),
+    language: str = Depends(get_current_language),
+    t: callable = Depends(get_translator)
 ):
     """获取当前租户下用户参与的所有工作空间
 
@@ -88,8 +96,13 @@ def get_workspaces(
         )
 
     api_logger.info(f"成功获取 {len(workspaces)} 个工作空间")
-    workspaces_schema = [WorkspaceResponse.model_validate(w) for w in workspaces]
-    return success(data=workspaces_schema, msg="工作空间列表获取成功")
+    
+    # 使用序列化器添加国际化字段
+    serializer = WorkspaceSerializer()
+    workspaces_data = [WorkspaceResponse.model_validate(w).model_dump() for w in workspaces]
+    workspaces_i18n = serializer.serialize_list(workspaces_data, language)
+    
+    return success(data=workspaces_i18n, msg=t("workspace.list_retrieved"))
 
 
 @router.post("", response_model=ApiResponse)
@@ -98,6 +111,8 @@ def create_workspace(
     language_type: str = Header(default="zh", alias="X-Language-Type"),
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_superuser),
+    language: str = Depends(get_current_language),
+    t: callable = Depends(get_translator)
 ):
     """创建新的工作空间"""
     from app.core.language_utils import get_language_from_header
@@ -118,8 +133,13 @@ def create_workspace(
         f"工作空间创建成功 - 名称: {workspace.name}, ID: {result.id}, "
         f"创建者: {current_user.username}, language={language}"
     )
-    result_schema = WorkspaceResponse.model_validate(result)
-    return success(data=result_schema, msg="工作空间创建成功")
+    
+    # 使用序列化器添加国际化字段
+    serializer = WorkspaceSerializer()
+    result_data = WorkspaceResponse.model_validate(result).model_dump()
+    result_i18n = serializer.serialize(result_data, language)
+    
+    return success(data=result_i18n, msg=t("workspace.created"))
 
 @router.put("", response_model=ApiResponse)
 @cur_workspace_access_guard()
@@ -127,6 +147,8 @@ def update_workspace(
     workspace: WorkspaceUpdate,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    language: str = Depends(get_current_language),
+    t: callable = Depends(get_translator)
 ):
     """更新工作空间"""
     workspace_id = current_user.current_workspace_id
@@ -139,14 +161,21 @@ def update_workspace(
         user=current_user,
     )
     api_logger.info(f"工作空间更新成功 - ID: {workspace_id}, 用户: {current_user.username}")
-    result_schema = WorkspaceResponse.model_validate(result)
-    return success(data=result_schema, msg="工作空间更新成功")
+    
+    # 使用序列化器添加国际化字段
+    serializer = WorkspaceSerializer()
+    result_data = WorkspaceResponse.model_validate(result).model_dump()
+    result_i18n = serializer.serialize(result_data, language)
+    
+    return success(data=result_i18n, msg=t("workspace.updated"))
 
 @router.get("/members", response_model=ApiResponse)
 @cur_workspace_access_guard()
 def get_cur_workspace_members(
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    language: str = Depends(get_current_language),
+    t: callable = Depends(get_translator)
 ):
     """获取工作空间成员列表（关系序列化）"""
     api_logger.info(f"用户 {current_user.username} 请求获取工作空间 {current_user.current_workspace_id} 的成员列表")
@@ -157,8 +186,14 @@ def get_cur_workspace_members(
         user=current_user,
     )
     api_logger.info(f"工作空间成员列表获取成功 - ID: {current_user.current_workspace_id}, 数量: {len(members)}")
+    
+    # 转换为表格项并使用序列化器添加国际化字段
     table_items = _convert_members_to_table_items(members)
-    return success(data=table_items, msg="工作空间成员列表获取成功")
+    serializer = WorkspaceMemberSerializer()
+    members_data = [item.model_dump() for item in table_items]
+    members_i18n = serializer.serialize_list(members_data, language)
+    
+    return success(data=members_i18n, msg=t("workspace.members.list_retrieved"))
 
 
 @router.put("/members", response_model=ApiResponse)
@@ -168,6 +203,7 @@ def update_workspace_members(
     updates: List[WorkspaceMemberUpdate],
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    t: callable = Depends(get_translator)
 ):
     workspace_id = current_user.current_workspace_id
     api_logger.info(f"用户 {current_user.username} 请求更新工作空间 {workspace_id} 的成员角色")
@@ -178,7 +214,7 @@ def update_workspace_members(
         user=current_user,
     )
     api_logger.info(f"工作空间成员角色更新成功 - ID: {workspace_id}, 数量: {len(members)}")
-    return success(msg="成员角色更新成功")
+    return success(msg=t("workspace.members.role_updated"))
 
 
 @router.delete("/members/{member_id}", response_model=ApiResponse)
@@ -187,6 +223,7 @@ def delete_workspace_member(
     member_id: uuid.UUID,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    t: callable = Depends(get_translator)
 ):
     workspace_id = current_user.current_workspace_id
     api_logger.info(f"用户 {current_user.username} 请求删除工作空间 {workspace_id} 的成员 {member_id}")
@@ -198,7 +235,7 @@ def delete_workspace_member(
         user=current_user,
     )
     api_logger.info(f"工作空间成员删除成功 - ID: {workspace_id}, 成员: {member_id}")
-    return success(msg="成员删除成功")
+    return success(msg=t("workspace.members.deleted"))
 
 
 # 创建空间协作邀请
@@ -208,6 +245,8 @@ def create_workspace_invite(
     invite_data: WorkspaceInviteCreate,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    language: str = Depends(get_current_language),
+    t: callable = Depends(get_translator)
 ):
     """创建工作空间邀请"""
     workspace_id = current_user.current_workspace_id
@@ -220,7 +259,12 @@ def create_workspace_invite(
         user=current_user
     )
     api_logger.info(f"工作空间邀请创建成功 - 工作空间: {workspace_id}, 邮箱: {invite_data.email}")
-    return success(data=result, msg="邀请创建成功")
+    
+    # 使用序列化器添加国际化字段
+    serializer = WorkspaceInviteSerializer()
+    result_i18n = serializer.serialize(result, language)
+    
+    return success(data=result_i18n, msg=t("workspace.invites.created"))
 
 
 @router.get("/invites", response_model=ApiResponse)
@@ -232,6 +276,8 @@ def get_workspace_invites(
     offset: int = Query(0, ge=0),
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    language: str = Depends(get_current_language),
+    t: callable = Depends(get_translator)
 ):
     """获取工作空间邀请列表"""
     workspace_id = current_user.current_workspace_id
@@ -246,18 +292,30 @@ def get_workspace_invites(
         offset=offset
     )
     api_logger.info(f"成功获取 {len(invites)} 个邀请记录")
-    return success(data=invites, msg="邀请列表获取成功")
+    
+    # 使用序列化器添加国际化字段
+    serializer = WorkspaceInviteSerializer()
+    invites_i18n = serializer.serialize_list(invites, language)
+    
+    return success(data=invites_i18n, msg=t("workspace.invites.list_retrieved"))
 
 
 @public_router.get("/invites/validate/{token}", response_model=ApiResponse)
 def get_workspace_invite_info(
     token: str,
     db: Session = Depends(get_db),
+    language: str = Depends(get_current_language),
+    t: callable = Depends(get_translator)
 ):
     """获取工作空间邀请用户信息（无需认证）"""
     result = workspace_service.validate_invite_token(db=db, token=token)
     api_logger.info(f"工作空间邀请验证成功 - 邀请: {token}")
-    return success(data=result, msg="邀请验证成功")
+    
+    # 使用序列化器添加国际化字段
+    serializer = WorkspaceInviteSerializer()
+    result_i18n = serializer.serialize(result, language)
+    
+    return success(data=result_i18n, msg=t("workspace.invites.validated"))
 
 
 @router.delete("/invites/{invite_id}", response_model=ApiResponse)
@@ -267,6 +325,8 @@ def revoke_workspace_invite(
     invite_id: uuid.UUID,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    language: str = Depends(get_current_language),
+    t: callable = Depends(get_translator)
 ):
     """撤销工作空间邀请"""
     workspace_id = current_user.current_workspace_id
@@ -279,7 +339,12 @@ def revoke_workspace_invite(
         user=current_user
     )
     api_logger.info(f"工作空间邀请撤销成功 - 邀请: {invite_id}")
-    return success(data=result, msg="邀请撤销成功")
+    
+    # 使用序列化器添加国际化字段
+    serializer = WorkspaceInviteSerializer()
+    result_i18n = serializer.serialize(result, language)
+    
+    return success(data=result_i18n, msg=t("workspace.invites.revoked"))
 
 # ==================== 公开邀请接口（无需认证） ====================
 
@@ -302,6 +367,7 @@ def switch_workspace(
     workspace_id: uuid.UUID,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    t: callable = Depends(get_translator)
 ):
     """切换工作空间"""
     api_logger.info(f"用户 {current_user.username} 请求切换工作空间为 {workspace_id}")
@@ -312,7 +378,7 @@ def switch_workspace(
         user=current_user,
     )
     api_logger.info(f"成功切换工作空间为 {workspace_id}")
-    return success(msg="工作空间切换成功")
+    return success(msg=t("workspace.switched"))
 
 
 @router.get("/storage", response_model=ApiResponse)
@@ -320,6 +386,7 @@ def switch_workspace(
 def get_workspace_storage_type(
         db: Session = Depends(get_db),
         current_user: User = Depends(get_current_user),
+        t: callable = Depends(get_translator)
 ):
     """获取当前工作空间的存储类型"""
     workspace_id = current_user.current_workspace_id
@@ -331,7 +398,7 @@ def get_workspace_storage_type(
         user=current_user
     )
     api_logger.info(f"成功获取工作空间 {workspace_id} 的存储类型: {storage_type}")
-    return success(data={"storage_type": storage_type}, msg="存储类型获取成功")
+    return success(data={"storage_type": storage_type}, msg=t("workspace.storage.type_retrieved"))
 
 
 @router.get("/workspace_models", response_model=ApiResponse)
@@ -339,6 +406,8 @@ def get_workspace_storage_type(
 def workspace_models_configs(
         db: Session = Depends(get_db),
         current_user: User = Depends(get_current_user),
+        language: str = Depends(get_current_language),
+        t: callable = Depends(get_translator)
 ):
     """获取当前工作空间的模型配置（llm, embedding, rerank）"""
     workspace_id = current_user.current_workspace_id
@@ -354,14 +423,14 @@ def workspace_models_configs(
         api_logger.warning(f"工作空间 {workspace_id} 不存在或无权访问")
         raise HTTPException(
             status_code=status.HTTP_404_NOT_FOUND,
-            detail="工作空间不存在或无权访问"
+            detail=t("workspace.not_found")
         )
 
     api_logger.info(
         f"成功获取工作空间 {workspace_id} 的模型配置: "
         f"llm={configs.get('llm')}, embedding={configs.get('embedding')}, rerank={configs.get('rerank')}"
     )
-    return success(data=WorkspaceModelsConfig.model_validate(configs), msg="模型配置获取成功")
+    return success(data=WorkspaceModelsConfig.model_validate(configs), msg=t("workspace.models.config_retrieved"))
 
 
 @router.put("/workspace_models", response_model=ApiResponse)
@@ -370,6 +439,7 @@ def update_workspace_models_configs(
         models_update: WorkspaceModelsUpdate,
         db: Session = Depends(get_db),
         current_user: User = Depends(get_current_user),
+        t: callable = Depends(get_translator)
 ):
     """更新当前工作空间的模型配置（llm, embedding, rerank）"""
     workspace_id = current_user.current_workspace_id
@@ -386,5 +456,5 @@ def update_workspace_models_configs(
         f"成功更新工作空间 {workspace_id} 的模型配置: "
         f"llm={updated_workspace.llm}, embedding={updated_workspace.embedding}, rerank={updated_workspace.rerank}"
     )
-    return success(data=WorkspaceModelsConfig.model_validate(updated_workspace), msg="模型配置更新成功")
+    return success(data=WorkspaceModelsConfig.model_validate(updated_workspace), msg=t("workspace.models.config_updated"))
 

api/app/core/config.py

@@ -97,6 +97,7 @@ class Settings:
 
     # File Upload
     MAX_FILE_SIZE: int = int(os.getenv("MAX_FILE_SIZE", "52428800"))
+    MAX_FILE_COUNT: int = int(os.getenv("MAX_FILE_COUNT", "20"))
     FILE_PATH: str = os.getenv("FILE_PATH", "/files")
     FILE_URL_EXPIRES: int = int(os.getenv("FILE_URL_EXPIRES", "3600"))
 
@@ -162,6 +163,44 @@ class Settings:
     # This controls the language used for memory summary titles and other generated content
     DEFAULT_LANGUAGE: str = os.getenv("DEFAULT_LANGUAGE", "zh")
 
+    # ========================================================================
+    # Internationalization (i18n) Configuration
+    # ========================================================================
+    # Default language for API responses
+    I18N_DEFAULT_LANGUAGE: str = os.getenv("I18N_DEFAULT_LANGUAGE", "zh")
+    
+    # Supported languages (comma-separated)
+    I18N_SUPPORTED_LANGUAGES: list[str] = [
+        lang.strip()
+        for lang in os.getenv("I18N_SUPPORTED_LANGUAGES", "zh,en").split(",")
+        if lang.strip()
+    ]
+    
+    # Core locales directory (community edition)
+    # Use absolute path to work from any working directory
+    I18N_CORE_LOCALES_DIR: str = os.getenv(
+        "I18N_CORE_LOCALES_DIR",
+        os.path.join(os.path.dirname(os.path.dirname(__file__)), "locales")
+    )
+    
+    # Premium locales directory (enterprise edition, optional)
+    I18N_PREMIUM_LOCALES_DIR: Optional[str] = os.getenv("I18N_PREMIUM_LOCALES_DIR", None)
+    
+    # Enable translation cache
+    I18N_ENABLE_TRANSLATION_CACHE: bool = os.getenv("I18N_ENABLE_TRANSLATION_CACHE", "true").lower() == "true"
+    
+    # LRU cache size for hot translations
+    I18N_LRU_CACHE_SIZE: int = int(os.getenv("I18N_LRU_CACHE_SIZE", "1000"))
+    
+    # Enable hot reload of translation files
+    I18N_ENABLE_HOT_RELOAD: bool = os.getenv("I18N_ENABLE_HOT_RELOAD", "false").lower() == "true"
+    
+    # Fallback language when translation is missing
+    I18N_FALLBACK_LANGUAGE: str = os.getenv("I18N_FALLBACK_LANGUAGE", "zh")
+    
+    # Log missing translations
+    I18N_LOG_MISSING_TRANSLATIONS: bool = os.getenv("I18N_LOG_MISSING_TRANSLATIONS", "true").lower() == "true"
+
     # Logging settings
     LOG_LEVEL: str = os.getenv("LOG_LEVEL", "INFO")
     LOG_FORMAT: str = os.getenv("LOG_FORMAT", "%(asctime)s - %(name)s - %(levelname)s - %(message)s")

api/app/core/memory/agent/langgraph_graph/nodes/data_nodes.py

@@ -1,16 +1,45 @@
 from app.core.memory.agent.utils.llm_tools import ReadState, WriteState
+from app.schemas.memory_agent_schema import AgentMemoryDataset
 
 
 def content_input_node(state: ReadState) -> ReadState:
-    """开始节点 - 提取内容并保持状态信息"""
+    """
+    Start node - Extract content and maintain state information
+
+    Extracts the content from the first message in the state and returns it
+    as the data field while preserving all other state information.
+
+    Args:
+        state: ReadState containing messages and other state data
+
+    Returns:
+        ReadState: Updated state with extracted content in data field
+    """
 
     content = state['messages'][0].content if state.get('messages') else ''
-    # 返回内容并保持所有状态信息
+    # Return content and maintain all state information
+    for pronoun in AgentMemoryDataset.PRONOUN:
+        content = content.replace(pronoun, AgentMemoryDataset.NAME)
+
     return {"data": content}
 
+
 def content_input_write(state: WriteState) -> WriteState:
-    """开始节点 - 提取内容并保持状态信息"""
+    """
+    Start node - Extract content and maintain state information for write operations
+
+    Extracts the content from the first message in the state for write operations.
+
+    Args:
+        state: WriteState containing messages and other state data
+
+    Returns:
+        WriteState: Updated state with extracted content in data field
+    """
 
     content = state['messages'][0].content if state.get('messages') else ''
-    # 返回内容并保持所有状态信息
-    return {"data": content}
+    # Return content and maintain all state information
+    for pronoun in AgentMemoryDataset.PRONOUN:
+        content = content.replace(pronoun, AgentMemoryDataset.NAME)
+
+    return {"data": content}

api/app/core/memory/agent/langgraph_graph/nodes/problem_nodes.py

@@ -19,19 +19,39 @@ logger = get_agent_logger(__name__)
 
 
 class ProblemNodeService(LLMServiceMixin):
-    """问题处理节点服务类"""
+    """
+    Problem processing node service class
+    
+    Handles problem decomposition and extension operations using LLM services.
+    Inherits from LLMServiceMixin to provide structured LLM calling capabilities.
+    
+    Attributes:
+        template_service: Service for rendering Jinja2 templates
+    """
 
     def __init__(self):
         super().__init__()
         self.template_service = TemplateService(template_root)
 
 
-# 创建全局服务实例
+# Create global service instance
 problem_service = ProblemNodeService()
 
 
 async def Split_The_Problem(state: ReadState) -> ReadState:
-    """问题分解节点"""
+    """
+    Problem decomposition node
+    
+    Breaks down complex user queries into smaller, more manageable sub-problems.
+    Uses LLM to analyze the input and generate structured problem decomposition
+    with question types and reasoning.
+    
+    Args:
+        state: ReadState containing user input and configuration
+        
+    Returns:
+        ReadState: Updated state with problem decomposition results
+    """
     # 从状态中获取数据
     content = state.get('data', '')
     end_user_id = state.get('end_user_id', '')
@@ -64,7 +84,7 @@ async def Split_The_Problem(state: ReadState) -> ReadState:
         # 添加更详细的日志记录
         logger.info(f"Split_The_Problem: 开始处理问题分解，内容长度: {len(content)}")
 
-        # 验证结构化响应
+        # Validate structured response
         if not structured or not hasattr(structured, 'root'):
             logger.warning("Split_The_Problem: 结构化响应为空或格式不正确")
             split_result = json.dumps([], ensure_ascii=False)
@@ -106,7 +126,7 @@ async def Split_The_Problem(state: ReadState) -> ReadState:
             exc_info=True
         )
 
-        # 提供更详细的错误信息
+        # Provide more detailed error information
         error_details = {
             "error_type": type(e).__name__,
             "error_message": str(e),
@@ -116,7 +136,7 @@ async def Split_The_Problem(state: ReadState) -> ReadState:
 
         logger.error(f"Split_The_Problem error details: {error_details}")
 
-        # 创建默认的空结果
+        # Create default empty result
         result = {
             "context": json.dumps([], ensure_ascii=False),
             "original": content,
@@ -130,13 +150,25 @@ async def Split_The_Problem(state: ReadState) -> ReadState:
             }
         }
 
-    # 返回更新后的状态，包含spit_context字段
+    # Return updated state including spit_context field
     return {"spit_data": result}
 
 
 async def Problem_Extension(state: ReadState) -> ReadState:
-    """问题扩展节点"""
-    # 获取原始数据和分解结果
+    """
+    Problem extension node
+    
+    Extends the decomposed problems from Split_The_Problem node by generating
+    additional related questions and organizing them by original question.
+    Uses LLM to create comprehensive question extensions for better memory retrieval.
+    
+    Args:
+        state: ReadState containing decomposed problems and configuration
+        
+    Returns:
+        ReadState: Updated state with extended problem results
+    """
+    # Get original data and decomposition results
     start = time.time()
     content = state.get('data', '')
     data = state.get('spit_data', '')['context']
@@ -182,7 +214,7 @@ async def Problem_Extension(state: ReadState) -> ReadState:
 
         logger.info(f"Problem_Extension: 开始处理问题扩展，问题数量: {len(databasets)}")
 
-        # 验证结构化响应
+        # Validate structured response
         if not response_content or not hasattr(response_content, 'root'):
             logger.warning("Problem_Extension: 结构化响应为空或格式不正确")
             aggregated_dict = {}
@@ -216,7 +248,7 @@ async def Problem_Extension(state: ReadState) -> ReadState:
             exc_info=True
         )
 
-        # 提供更详细的错误信息
+        # Provide more detailed error information
         error_details = {
             "error_type": type(e).__name__,
             "error_message": str(e),

api/app/core/memory/agent/langgraph_graph/nodes/retrieve_nodes.py

@@ -29,6 +29,18 @@ logger = get_agent_logger(__name__)
 
 
 async def rag_config(state):
+    """
+    Configure RAG (Retrieval-Augmented Generation) settings
+    
+    Creates configuration for knowledge base retrieval including similarity thresholds,
+    weights, and reranker settings.
+    
+    Args:
+        state: Current state containing user_rag_memory_id
+        
+    Returns:
+        dict: RAG configuration dictionary
+    """
     user_rag_memory_id = state.get('user_rag_memory_id', '')
     kb_config = {
         "knowledge_bases": [
@@ -48,6 +60,19 @@ async def rag_config(state):
 
 
 async def rag_knowledge(state, question):
+    """
+    Retrieve knowledge using RAG approach
+    
+    Performs knowledge retrieval from configured knowledge bases using the
+    provided question and returns formatted results.
+    
+    Args:
+        state: Current state containing configuration
+        question: Question to search for
+        
+    Returns:
+        tuple: (retrieval_knowledge, clean_content, cleaned_query, raw_results)
+    """
     kb_config = await rag_config(state)
     end_user_id = state.get('end_user_id', '')
     user_rag_memory_id = state.get("user_rag_memory_id", '')
@@ -68,12 +93,24 @@ async def rag_knowledge(state, question):
 
 
 async def llm_infomation(state: ReadState) -> ReadState:
+    """
+    Get LLM configuration information from state
+    
+    Retrieves model configuration details including model ID and tenant ID
+    from the memory configuration in the current state.
+    
+    Args:
+        state: ReadState containing memory configuration
+        
+    Returns:
+        ReadState: Model configuration as Pydantic model
+    """
     memory_config = state.get('memory_config', None)
     model_id = memory_config.llm_model_id
     tenant_id = memory_config.tenant_id
 
-    # 使用现有的 memory_config 而不是重新查询数据库
-    # 或者使用线程安全的数据库访问
+    # Use existing memory_config instead of re-querying database
+    # or use thread-safe database access
     with get_db_context() as db:
         result_orm = ModelConfigService.get_model_by_id(db=db, model_id=model_id, tenant_id=tenant_id)
         result_pydantic = model_schema.ModelConfig.model_validate(result_orm)
@@ -82,16 +119,20 @@ async def llm_infomation(state: ReadState) -> ReadState:
 
 async def clean_databases(data) -> str:
     """
-    简化的数据库搜索结果清理函数
+    Simplified database search result cleaning function
+    
+    Processes and cleans search results from various sources including
+    reranked results and time-based search results. Extracts text content
+    from structured data and returns as formatted string.
     
     Args:
-        data: 搜索结果数据
+        data: Search result data (can be string, dict, or other types)
         
     Returns:
-        清理后的内容字符串
+        str: Cleaned content string
     """
     try:
-        # 解析JSON字符串
+        # Parse JSON string
         if isinstance(data, str):
             try:
                 data = json.loads(data)
@@ -101,24 +142,24 @@ async def clean_databases(data) -> str:
         if not isinstance(data, dict):
             return str(data)
 
-        # 获取结果数据
+        # Get result data
         # with open("搜索结果.json","w",encoding='utf-8') as f:
         #     f.write(json.dumps(data, indent=4, ensure_ascii=False))
         results = data.get('results', data)
         if not isinstance(results, dict):
             return str(results)
 
-        # 收集所有内容
+        # Collect all content
         content_list = []
 
-        # 处理重排序结果
+        # Process reranked results
         reranked = results.get('reranked_results', {})
         if reranked:
             for category in ['summaries', 'statements', 'chunks', 'entities']:
                 items = reranked.get(category, [])
                 if isinstance(items, list):
                     content_list.extend(items)
-        # 处理时间搜索结果
+        # Process time search results
         time_search = results.get('time_search', {})
         if time_search:
             if isinstance(time_search, dict):
@@ -128,7 +169,7 @@ async def clean_databases(data) -> str:
             elif isinstance(time_search, list):
                 content_list.extend(time_search)
 
-        # 提取文本内容
+        # Extract text content
         text_parts = []
         for item in content_list:
             if isinstance(item, dict):
@@ -146,10 +187,19 @@ async def clean_databases(data) -> str:
 
 
 async def retrieve_nodes(state: ReadState) -> ReadState:
-    '''
-
-    模型信息
-    '''
+    """
+    Retrieve information using simplified search approach
+    
+    Processes extended problems from previous nodes and performs retrieval
+    using either RAG or hybrid search based on storage type. Handles concurrent
+    processing of multiple questions and deduplicates results.
+    
+    Args:
+        state: ReadState containing problem extensions and configuration
+        
+    Returns:
+        ReadState: Updated state with retrieval results and intermediate outputs
+    """
 
     problem_extension = state.get('problem_extension', '')['context']
     storage_type = state.get('storage_type', '')
@@ -163,7 +213,7 @@ async def retrieve_nodes(state: ReadState) -> ReadState:
             problem_list.append(data)
     logger.info(f"Retrieve: storage_type={storage_type}, user_rag_memory_id={user_rag_memory_id}")
 
-    # 创建异步任务处理单个问题
+    # Create async task to process individual questions
     async def process_question_nodes(idx, question):
         try:
             # Prepare search parameters based on storage type
@@ -209,7 +259,7 @@ async def retrieve_nodes(state: ReadState) -> ReadState:
                 }
             }
 
-    # 并发处理所有问题
+    # Process all questions concurrently
     tasks = [process_question_nodes(idx, question) for idx, question in enumerate(problem_list)]
     databases_anser = await asyncio.gather(*tasks)
     databases_data = {
@@ -257,7 +307,20 @@ async def retrieve_nodes(state: ReadState) -> ReadState:
 
 
 async def retrieve(state: ReadState) -> ReadState:
-    # 从state中获取end_user_id
+    """
+    Advanced retrieve function using LangChain agents and tools
+    
+    Uses LangChain agents with specialized retrieval tools (time-based and hybrid)
+    to perform sophisticated information retrieval. Supports both RAG and traditional
+    memory storage approaches with concurrent processing and result deduplication.
+    
+    Args:
+        state: ReadState containing problem extensions and configuration
+        
+    Returns:
+        ReadState: Updated state with retrieval results and intermediate outputs
+    """
+    # Get end_user_id from state
     import time
     start = time.time()
     problem_extension = state.get('problem_extension', '')['context']
@@ -299,21 +362,21 @@ async def retrieve(state: ReadState) -> ReadState:
         system_prompt=f"我是检索专家，可以根据适合的工具进行检索。当前使用的end_user_id是: {end_user_id}"
     )
 
-    # 创建异步任务处理单个问题
+    # Create async task to process individual questions
     import asyncio
 
-    # 在模块级别定义信号量，限制最大并发数
-    SEMAPHORE = asyncio.Semaphore(5)  # 限制最多5个并发数据库操作
+    # Define semaphore at module level to limit maximum concurrency
+    SEMAPHORE = asyncio.Semaphore(5)  # Limit to maximum 5 concurrent database operations
 
     async def process_question(idx, question):
-        async with SEMAPHORE:  # 限制并发
+        async with SEMAPHORE:  # Limit concurrency
             try:
                 if storage_type == "rag" and user_rag_memory_id:
                     retrieval_knowledge, clean_content, cleaned_query, raw_results = await rag_knowledge(state,
                                                                                                          question)
                 else:
                     cleaned_query = question
-                    # 使用 asyncio 在线程池中运行同步的 agent.invoke
+                    # Use asyncio to run synchronous agent.invoke in thread pool
                     import asyncio
                     response = await asyncio.get_event_loop().run_in_executor(
                         None,
@@ -362,7 +425,7 @@ async def retrieve(state: ReadState) -> ReadState:
                     }
                 }
 
-    # 并发处理所有问题
+    # Process all questions concurrently
     import asyncio
     tasks = [process_question(idx, question) for idx, question in enumerate(problem_list)]
     databases_anser = await asyncio.gather(*tasks)

api/app/core/memory/agent/langgraph_graph/nodes/summary_nodes.py

@@ -23,18 +23,39 @@ logger = get_agent_logger(__name__)
 
 
 class SummaryNodeService(LLMServiceMixin):
-    """总结节点服务类"""
+    """
+    Summary node service class
+    
+    Handles summary generation operations using LLM services. Inherits from 
+    LLMServiceMixin to provide structured LLM calling capabilities for 
+    generating summaries from retrieved information.
+    
+    Attributes:
+        template_service: Service for rendering Jinja2 templates
+    """
 
     def __init__(self):
         super().__init__()
         self.template_service = TemplateService(template_root)
 
 
-# 创建全局服务实例
+# Create global service instance
 summary_service = SummaryNodeService()
 
 
 async def rag_config(state):
+    """
+    Configure RAG (Retrieval-Augmented Generation) settings for summary operations
+    
+    Creates configuration for knowledge base retrieval including similarity thresholds,
+    weights, and reranker settings specifically for summary generation.
+    
+    Args:
+        state: Current state containing user_rag_memory_id
+        
+    Returns:
+        dict: RAG configuration dictionary with knowledge base settings
+    """
     user_rag_memory_id = state.get('user_rag_memory_id', '')
     kb_config = {
         "knowledge_bases": [
@@ -54,6 +75,23 @@ async def rag_config(state):
 
 
 async def rag_knowledge(state, question):
+    """
+    Retrieve knowledge using RAG approach for summary generation
+    
+    Performs knowledge retrieval from configured knowledge bases using the
+    provided question and returns formatted results for summary processing.
+    
+    Args:
+        state: Current state containing configuration
+        question: Question to search for in knowledge base
+        
+    Returns:
+        tuple: (retrieval_knowledge, clean_content, cleaned_query, raw_results)
+            - retrieval_knowledge: List of retrieved knowledge chunks
+            - clean_content: Formatted content string
+            - cleaned_query: Processed query string
+            - raw_results: Raw retrieval results
+    """
     kb_config = await rag_config(state)
     end_user_id = state.get('end_user_id', '')
     user_rag_memory_id = state.get("user_rag_memory_id", '')
@@ -74,6 +112,18 @@ async def rag_knowledge(state, question):
 
 
 async def summary_history(state: ReadState) -> ReadState:
+    """
+    Retrieve conversation history for summary context
+    
+    Gets the conversation history for the current user to provide context
+    for summary generation operations.
+    
+    Args:
+        state: ReadState containing end_user_id
+        
+    Returns:
+        ReadState: Conversation history data
+    """
     end_user_id = state.get("end_user_id", '')
     history = await SessionService(store).get_history(end_user_id, end_user_id, end_user_id)
     return history
@@ -82,11 +132,26 @@ async def summary_history(state: ReadState) -> ReadState:
 async def summary_llm(state: ReadState, history, retrieve_info, template_name, operation_name, response_model,
                       search_mode) -> str:
     """
-    增强的summary_llm函数，包含更好的错误处理和数据验证
+    Enhanced summary_llm function with better error handling and data validation
+    
+    Generates summaries using LLM with structured output. Includes fallback mechanisms
+    for handling LLM failures and provides robust error recovery.
+    
+    Args:
+        state: ReadState containing current context
+        history: Conversation history for context
+        retrieve_info: Retrieved information to summarize
+        template_name: Jinja2 template name for prompt generation
+        operation_name: Type of operation (summary, input_summary, retrieve_summary)
+        response_model: Pydantic model for structured output
+        search_mode: Search mode flag ("0" for simple, "1" for complex)
+        
+    Returns:
+        str: Generated summary text or fallback message
     """
     data = state.get("data", '')
 
-    # 构建系统提示词
+    # Build system prompt
     if str(search_mode) == "0":
         system_prompt = await summary_service.template_service.render_template(
             template_name=template_name,
@@ -103,7 +168,7 @@ async def summary_llm(state: ReadState, history, retrieve_info, template_name, o
             retrieve_info=retrieve_info
         )
     try:
-        # 使用优化的LLM服务进行结构化输出
+        # Use optimized LLM service for structured output
         with get_db_context() as db_session:
             structured = await summary_service.call_llm_structured(
                 state=state,
@@ -112,23 +177,23 @@ async def summary_llm(state: ReadState, history, retrieve_info, template_name, o
                 response_model=response_model,
                 fallback_value=None
             )
-        # 验证结构化响应
+        # Validate structured response
         if structured is None:
             logger.warning("LLM返回None，使用默认回答")
             return "信息不足，无法回答"
 
-        # 根据操作类型提取答案
+        # Extract answer based on operation type
         if operation_name == "summary":
             aimessages = getattr(structured, 'query_answer', None) or "信息不足，无法回答"
         else:
-            # 处理RetrieveSummaryResponse
+            # Handle RetrieveSummaryResponse
             if hasattr(structured, 'data') and structured.data:
                 aimessages = getattr(structured.data, 'query_answer', None) or "信息不足，无法回答"
             else:
                 logger.warning("结构化响应缺少data字段")
                 aimessages = "信息不足，无法回答"
 
-        # 验证答案不为空
+        # Validate answer is not empty
         if not aimessages or aimessages.strip() == "":
             aimessages = "信息不足，无法回答"
 
@@ -137,7 +202,7 @@ async def summary_llm(state: ReadState, history, retrieve_info, template_name, o
     except Exception as e:
         logger.error(f"结构化输出失败: {e}", exc_info=True)
 
-        # 尝试非结构化输出作为fallback
+        # Try unstructured output as fallback
         try:
             logger.info("尝试非结构化输出作为fallback")
             response = await summary_service.call_llm_simple(
@@ -148,9 +213,9 @@ async def summary_llm(state: ReadState, history, retrieve_info, template_name, o
             )
 
             if response and response.strip():
-                # 简单清理响应
+                # Simple response cleaning
                 cleaned_response = response.strip()
-                # 移除可能的JSON标记
+                # Remove possible JSON markers
                 if cleaned_response.startswith('```'):
                     lines = cleaned_response.split('\n')
                     cleaned_response = '\n'.join(lines[1:-1])
@@ -165,6 +230,19 @@ async def summary_llm(state: ReadState, history, retrieve_info, template_name, o
 
 
 async def summary_redis_save(state: ReadState, aimessages) -> ReadState:
+    """
+    Save summary results to Redis session storage
+    
+    Stores the generated summary and user query in Redis for session management
+    and conversation history tracking.
+    
+    Args:
+        state: ReadState containing user and query information
+        aimessages: Generated summary message to save
+        
+    Returns:
+        ReadState: Updated state after saving to Redis
+    """
     data = state.get("data", '')
     end_user_id = state.get("end_user_id", '')
     await SessionService(store).save_session(
@@ -179,6 +257,20 @@ async def summary_redis_save(state: ReadState, aimessages) -> ReadState:
 
 
 async def summary_prompt(state: ReadState, aimessages, raw_results) -> ReadState:
+    """
+    Format summary results for different output types
+    
+    Creates structured output formats for both input summary and retrieval summary
+    operations, including metadata and intermediate results for frontend display.
+    
+    Args:
+        state: ReadState containing storage and user information
+        aimessages: Generated summary message
+        raw_results: Raw search/retrieval results
+        
+    Returns:
+        tuple: (input_summary, retrieve_summary) formatted result dictionaries
+    """
     storage_type = state.get("storage_type", '')
     user_rag_memory_id = state.get("user_rag_memory_id", '')
     data = state.get("data", '')
@@ -217,6 +309,19 @@ async def summary_prompt(state: ReadState, aimessages, raw_results) -> ReadState
 
 
 async def Input_Summary(state: ReadState) -> ReadState:
+    """
+    Generate quick input summary from retrieved information
+    
+    Performs fast retrieval and generates a quick summary response for user queries.
+    This function prioritizes speed by only searching summary nodes and provides
+    immediate feedback to users.
+    
+    Args:
+        state: ReadState containing user query, storage configuration, and context
+        
+    Returns:
+        ReadState: Dictionary containing summary results with status and metadata
+    """
     start = time.time()
     storage_type = state.get("storage_type", '')
     memory_config = state.get('memory_config', None)
@@ -266,6 +371,19 @@ async def Input_Summary(state: ReadState) -> ReadState:
 
 
 async def Retrieve_Summary(state: ReadState) -> ReadState:
+    """
+    Generate comprehensive summary from retrieved expansion issues
+    
+    Processes retrieved expansion issues and generates a detailed summary using LLM.
+    This function handles complex retrieval results and provides comprehensive answers
+    based on expanded query results.
+    
+    Args:
+        state: ReadState containing retrieve data with expansion issues
+        
+    Returns:
+        ReadState: Dictionary containing comprehensive summary results
+    """
     retrieve = state.get("retrieve", '')
     history = await summary_history(state)
     import json
@@ -299,13 +417,26 @@ async def Retrieve_Summary(state: ReadState) -> ReadState:
         duration = 0.0
     log_time('Retrieval summary', duration)
 
-    # 修复协程调用 - 先await，然后访问返回值
+    # Fixed coroutine call - await first, then access return value
     summary_result = await summary_prompt(state, aimessages, retrieve_info_str)
     summary = summary_result[1]
     return {"summary": summary}
 
 
 async def Summary(state: ReadState) -> ReadState:
+    """
+    Generate final comprehensive summary from verified data
+    
+    Creates the final summary using verified expansion issues and conversation history.
+    This function processes verified data to generate the most comprehensive and
+    accurate response to user queries.
+    
+    Args:
+        state: ReadState containing verified data and query information
+        
+    Returns:
+        ReadState: Dictionary containing final summary results
+    """
     start = time.time()
     query = state.get("data", '')
     verify = state.get("verify", '')
@@ -336,13 +467,26 @@ async def Summary(state: ReadState) -> ReadState:
         duration = 0.0
     log_time('Retrieval summary', duration)
 
-    # 修复协程调用 - 先await，然后访问返回值
+    # Fixed coroutine call - await first, then access return value
     summary_result = await summary_prompt(state, aimessages, retrieve_info_str)
     summary = summary_result[1]
     return {"summary": summary}
 
 
 async def Summary_fails(state: ReadState) -> ReadState:
+    """
+    Generate fallback summary when normal summary process fails
+    
+    Provides a fallback summary generation mechanism when the standard summary
+    process encounters errors or fails to produce satisfactory results. Uses
+    a specialized failure template to handle edge cases.
+    
+    Args:
+        state: ReadState containing verified data and failure context
+        
+    Returns:
+        ReadState: Dictionary containing fallback summary results
+    """
     storage_type = state.get("storage_type", '')
     user_rag_memory_id = state.get("user_rag_memory_id", '')
     history = await summary_history(state)

api/app/core/memory/agent/langgraph_graph/nodes/verification_nodes.py

@@ -18,24 +18,46 @@ logger = get_agent_logger(__name__)
 
 
 class VerificationNodeService(LLMServiceMixin):
-    """验证节点服务类"""
+    """
+    Verification node service class
+    
+    Handles data verification operations using LLM services. Inherits from 
+    LLMServiceMixin to provide structured LLM calling capabilities for 
+    verifying and validating retrieved information.
+    
+    Attributes:
+        template_service: Service for rendering Jinja2 templates
+    """
 
     def __init__(self):
         super().__init__()
         self.template_service = TemplateService(template_root)
 
 
-# 创建全局服务实例
+# Create global service instance
 verification_service = VerificationNodeService()
 
 
 async def Verify_prompt(state: ReadState, messages_deal: VerificationResult):
-    """处理验证结果并生成输出格式"""
+    """
+    Process verification results and generate output format
+    
+    Transforms VerificationResult objects into structured output format suitable
+    for frontend consumption. Handles conversion of VerificationItem objects to
+    dictionary format and adds metadata for tracking.
+    
+    Args:
+        state: ReadState containing storage and user configuration
+        messages_deal: VerificationResult containing verification outcomes
+        
+    Returns:
+        dict: Formatted verification result with status and metadata
+    """
     storage_type = state.get('storage_type', '')
     user_rag_memory_id = state.get('user_rag_memory_id', '')
     data = state.get('data', '')
 
-    # 将 VerificationItem 对象转换为字典列表
+    # Convert VerificationItem objects to dictionary list
     verified_data = []
     if messages_deal.expansion_issue:
         for item in messages_deal.expansion_issue:
@@ -89,7 +111,7 @@ async def Verify(state: ReadState):
 
         logger.info("Verify: 开始渲染模板")
 
-        # 生成 JSON schema 以指导 LLM 输出正确格式
+        # Generate JSON schema to guide LLM output format
         json_schema = VerificationResult.model_json_schema()
 
         system_prompt = await verification_service.template_service.render_template(
@@ -104,8 +126,8 @@ async def Verify(state: ReadState):
         # 使用优化的LLM服务，添加超时保护
         logger.info("Verify: 开始调用 LLM")
         try:
-            # 添加 asyncio.wait_for 超时包裹，防止无限等待
-            # 超时时间设置为 150 秒（比 LLM 配置的 120 秒稍长）
+            # Add asyncio.wait_for timeout wrapper to prevent infinite waiting
+            # Timeout set to 150 seconds (slightly longer than LLM config's 120 seconds)
 
             with get_db_context() as db_session:
                 structured = await asyncio.wait_for(
@@ -122,7 +144,7 @@ async def Verify(state: ReadState):
                             "reason": "验证失败或超时"
                         }
                     ),
-                    timeout=150.0  # 150秒超时
+                    timeout=150.0  # 150 second timeout
                 )
             logger.info(f"Verify: LLM 调用完成，result={structured}")
         except asyncio.TimeoutError:

api/app/core/memory/agent/langgraph_graph/read_graph.py

@@ -33,7 +33,19 @@ from app.core.memory.agent.langgraph_graph.routing.routers import (
 
 @asynccontextmanager
 async def make_read_graph():
-    """创建并返回 LangGraph 工作流"""
+    """
+    Create and return a LangGraph workflow for memory reading operations
+    
+    Builds a state graph workflow that handles memory retrieval, problem analysis,
+    verification, and summarization. The workflow includes nodes for content input,
+    problem splitting, retrieval, verification, and various summary operations.
+    
+    Yields:
+        StateGraph: Compiled LangGraph workflow for memory reading
+        
+    Raises:
+        Exception: If workflow creation fails
+    """
     try:
         # Build workflow graph
         workflow = StateGraph(ReadState)
@@ -48,7 +60,7 @@ async def make_read_graph():
         workflow.add_node("Summary", Summary)
         workflow.add_node("Summary_fails", Summary_fails)
 
-        # 添加边
+        # Add edges to define workflow flow
         workflow.add_edge(START, "content_input")
         workflow.add_conditional_edges("content_input", Split_continue)
         workflow.add_edge("Input_Summary", END)
@@ -63,7 +75,7 @@ async def make_read_graph():
         '''-----'''
         # workflow.add_edge("Retrieve", END)
 
-        # 编译工作流
+        # Compile workflow
         graph = workflow.compile()
         yield graph
 
@@ -72,108 +84,3 @@ async def make_read_graph():
         raise
     finally:
         print("工作流创建完成")
-
-
-async def main():
-    """主函数 - 运行工作流"""
-    message = "昨天有什么好看的电影"
-    end_user_id = '88a459f5_text09'  # 组ID
-    storage_type = 'neo4j'  # 存储类型
-    search_switch = '1'  # 搜索开关
-    user_rag_memory_id = 'wwwwwwww'  # 用户RAG记忆ID
-
-    # 获取数据库会话
-    db_session = next(get_db())
-    config_service = MemoryConfigService(db_session)
-    memory_config = config_service.load_memory_config(
-        config_id=17,  # 改为整数
-        service_name="MemoryAgentService"
-    )
-    import time
-    start = time.time()
-    try:
-        async with make_read_graph() as graph:
-            config = {"configurable": {"thread_id": end_user_id}}
-            # 初始状态 - 包含所有必要字段
-            initial_state = {"messages": [HumanMessage(content=message)], "search_switch": search_switch,
-                             "end_user_id": end_user_id
-                , "storage_type": storage_type, "user_rag_memory_id": user_rag_memory_id,
-                             "memory_config": memory_config}
-            # 获取节点更新信息
-            _intermediate_outputs = []
-            summary = ''
-
-            async for update_event in graph.astream(
-                    initial_state,
-                    stream_mode="updates",
-                    config=config
-            ):
-                for node_name, node_data in update_event.items():
-                    print(f"处理节点: {node_name}")
-
-                    # 处理不同Summary节点的返回结构
-                    if 'Summary' in node_name:
-                        if 'InputSummary' in node_data and 'summary_result' in node_data['InputSummary']:
-                            summary = node_data['InputSummary']['summary_result']
-                        elif 'RetrieveSummary' in node_data and 'summary_result' in node_data['RetrieveSummary']:
-                            summary = node_data['RetrieveSummary']['summary_result']
-                        elif 'summary' in node_data and 'summary_result' in node_data['summary']:
-                            summary = node_data['summary']['summary_result']
-                        elif 'SummaryFails' in node_data and 'summary_result' in node_data['SummaryFails']:
-                            summary = node_data['SummaryFails']['summary_result']
-
-                    spit_data = node_data.get('spit_data', {}).get('_intermediate', None)
-                    if spit_data and spit_data != [] and spit_data != {}:
-                        _intermediate_outputs.append(spit_data)
-
-                    # Problem_Extension 节点
-                    problem_extension = node_data.get('problem_extension', {}).get('_intermediate', None)
-                    if problem_extension and problem_extension != [] and problem_extension != {}:
-                        _intermediate_outputs.append(problem_extension)
-
-                    # Retrieve 节点
-                    retrieve_node = node_data.get('retrieve', {}).get('_intermediate_outputs', None)
-                    if retrieve_node and retrieve_node != [] and retrieve_node != {}:
-                        _intermediate_outputs.extend(retrieve_node)
-
-                    # Verify 节点
-                    verify_n = node_data.get('verify', {}).get('_intermediate', None)
-                    if verify_n and verify_n != [] and verify_n != {}:
-                        _intermediate_outputs.append(verify_n)
-
-                    # Summary 节点
-                    summary_n = node_data.get('summary', {}).get('_intermediate', None)
-                    if summary_n and summary_n != [] and summary_n != {}:
-                        _intermediate_outputs.append(summary_n)
-
-            # # 过滤掉空值
-            # _intermediate_outputs = [item for item in _intermediate_outputs if item and item != [] and item != {}]
-            #
-            # # 优化搜索结果
-            # print("=== 开始优化搜索结果 ===")
-            # optimized_outputs = merge_multiple_search_results(_intermediate_outputs)
-            # result=reorder_output_results(optimized_outputs)
-            # # 保存优化后的结果到文件
-            # with open('_intermediate_outputs_optimized.json', 'w', encoding='utf-8') as f:
-            #     import json
-            #     f.write(json.dumps(result, indent=4, ensure_ascii=False))
-            #
-            print(f"=== 最终摘要 ===")
-            print(summary)
-
-    except Exception as e:
-        import traceback
-        traceback.print_exc()
-    finally:
-        db_session.close()
-
-    end = time.time()
-    print(100 * 'y')
-    print(f"总耗时: {end - start}s")
-    print(100 * 'y')
-
-
-if __name__ == "__main__":
-    import asyncio
-
-    asyncio.run(main())

api/app/core/memory/agent/langgraph_graph/routing/routers.py

@@ -1,13 +1,13 @@
-
 from typing import Literal
 
 from app.core.logging_config import get_agent_logger
 from app.core.memory.agent.utils.llm_tools import ReadState, COUNTState
 
-
 logger = get_agent_logger(__name__)
 counter = COUNTState(limit=3)
-def Split_continue(state:ReadState) -> Literal["Split_The_Problem", "Input_Summary"]:
+
+
+def Split_continue(state: ReadState) -> Literal["Split_The_Problem", "Input_Summary"]:
     """
     Determine routing based on search_switch value.
 
@@ -25,6 +25,7 @@ def Split_continue(state:ReadState) -> Literal["Split_The_Problem", "Input_Summa
             return 'Input_Summary'
     return 'Split_The_Problem'  # 默认情况
 
+
 def Retrieve_continue(state) -> Literal["Verify", "Retrieve_Summary"]:
     """
     Determine routing based on search_switch value.
@@ -43,8 +44,10 @@ def Retrieve_continue(state) -> Literal["Verify", "Retrieve_Summary"]:
         elif search_switch == '1':
             return 'Retrieve_Summary'
     return 'Retrieve_Summary'  # Default based on business logic
+
+
 def Verify_continue(state: ReadState) -> Literal["Summary", "Summary_fails", "content_input"]:
-    status=state.get('verify', '')['status']
+    status = state.get('verify', '')['status']
     # loop_count = counter.get_total()
     if "success" in status:
         # counter.reset()
@@ -53,7 +56,7 @@ def Verify_continue(state: ReadState) -> Literal["Summary", "Summary_fails", "co
         # if loop_count < 2:  # Maximum loop count is 3
         #     return "content_input"
         # else:
-            # counter.reset()
+        # counter.reset()
         return "Summary_fails"
     else:
         # Add default return value to avoid returning None

api/app/core/memory/agent/langgraph_graph/routing/write_router.py

@@ -2,77 +2,104 @@ import json
 import os
 
 from app.core.logging_config import get_agent_logger
-from app.core.memory.agent.langgraph_graph.tools.write_tool import  format_parsing,  messages_parse
-from app.core.memory.agent.langgraph_graph.write_graph import make_write_graph, long_term_storage
-
+from app.core.memory.agent.langgraph_graph.tools.write_tool import format_parsing, messages_parse
 from app.core.memory.agent.models.write_aggregate_model import WriteAggregateModel
 from app.core.memory.agent.utils.llm_tools import PROJECT_ROOT_
-from app.core.memory.agent.utils.redis_tool import write_store
 from app.core.memory.agent.utils.redis_tool import count_store
+from app.core.memory.agent.utils.redis_tool import write_store
 from app.core.memory.agent.utils.template_tools import TemplateService
 from app.core.memory.utils.llm.llm_utils import MemoryClientFactory
-from app.db import get_db_context, get_db
+from app.db import get_db_context
 from app.repositories.memory_short_repository import LongTermMemoryRepository
 from app.schemas.memory_agent_schema import AgentMemory_Long_Term
 from app.services.memory_konwledges_server import write_rag
 from app.services.task_service import get_task_memory_write_result
 from app.tasks import write_message_task
 from app.utils.config_utils import resolve_config_id
+
 logger = get_agent_logger(__name__)
 template_root = os.path.join(PROJECT_ROOT_, 'memory', 'agent', 'utils', 'prompt')
 
+
 async def write_rag_agent(end_user_id, user_message, ai_message, user_rag_memory_id):
-    # RAG 模式：组合消息为字符串格式（保持原有逻辑）
+    """
+    Write messages to RAG storage system
+
+    Combines user and AI messages into a single string format and stores them
+    in the RAG (Retrieval-Augmented Generation) knowledge base for future retrieval.
+
+    Args:
+        end_user_id: User identifier for the conversation
+        user_message: User's input message content
+        ai_message: AI's response message content
+        user_rag_memory_id: RAG memory identifier for storage location
+    """
+    # RAG mode: combine messages into string format (maintain original logic)
     combined_message = f"user: {user_message}\nassistant: {ai_message}"
     await write_rag(end_user_id, combined_message, user_rag_memory_id)
     logger.info(f'RAG_Agent:{end_user_id};{user_rag_memory_id}')
-async def write(storage_type, end_user_id, user_message, ai_message, user_rag_memory_id, actual_end_user_id,
-                actual_config_id, long_term_messages=[]):
+
+
+async def write(
+        storage_type,
+        end_user_id,
+        user_message,
+        ai_message,
+        user_rag_memory_id,
+        actual_end_user_id,
+        actual_config_id,
+        long_term_messages=None
+):
     """
-    写入记忆（支持结构化消息）
+    Write memory with structured message support
+
+    Handles memory writing operations for different storage types (Neo4j/RAG).
+    Supports both individual message pairs and batch long-term message processing.
 
     Args:
-        storage_type: 存储类型 (neo4j/rag)
-        end_user_id: 终端用户ID
-        user_message: 用户消息内容
-        ai_message: AI 回复内容
-        user_rag_memory_id: RAG 记忆ID
-        actual_end_user_id: 实际用户ID
-        actual_config_id: 配置ID
+        storage_type: Storage type identifier ("neo4j" or "rag")
+        end_user_id: Terminal user identifier
+        user_message: User message content
+        ai_message: AI response content
+        user_rag_memory_id: RAG memory identifier
+        actual_end_user_id: Actual user identifier for storage
+        actual_config_id: Configuration identifier
+        long_term_messages: Optional list of structured messages for batch processing
 
-    逻辑说明：
-    - RAG 模式：组合 user_message 和 ai_message 为字符串格式，保持原有逻辑不变
-    - Neo4j 模式：使用结构化消息列表
-      1. 如果 user_message 和 ai_message 都不为空：创建配对消息 [user, assistant]
-      2. 如果只有 user_message：创建单条用户消息 [user]（用于历史记忆场景）
-      3. 每条消息会被转换为独立的 Chunk，保留 speaker 字段
+    Logic explanation:
+    - RAG mode: Combines user_message and ai_message into string format, maintains original logic
+    - Neo4j mode: Uses structured message lists
+      1. If both user_message and ai_message are not empty: Creates paired messages [user, assistant]
+      2. If only user_message exists: Creates single user message [user] (for historical memory scenarios)
+      3. Each message is converted to independent Chunk, preserving speaker field
     """
 
-    db = next(get_db())
-    try:
+    if long_term_messages is None:
+        long_term_messages = []
+    with get_db_context() as db:
         actual_config_id = resolve_config_id(actual_config_id, db)
-        # Neo4j 模式：使用结构化消息列表
+        # Neo4j mode: Use structured message lists
         structured_messages = []
 
-        # 始终添加用户消息（如果不为空）
+        # Always add user message (if not empty)
         if isinstance(user_message, str) and user_message.strip() != "":
             structured_messages.append({"role": "user", "content": user_message})
 
-        # 只有当 AI 回复不为空时才添加 assistant 消息
+        # Only add assistant message when AI reply is not empty
         if isinstance(ai_message, str) and ai_message.strip() != "":
             structured_messages.append({"role": "assistant", "content": ai_message})
 
-        # 如果提供了 long_term_messages，使用它替代 structured_messages
+        # If long_term_messages provided, use it to replace structured_messages
         if long_term_messages and isinstance(long_term_messages, list):
             structured_messages = long_term_messages
         elif long_term_messages and isinstance(long_term_messages, str):
-            # 如果是 JSON 字符串，先解析
+            # If it's a JSON string, parse it first
             try:
                 structured_messages = json.loads(long_term_messages)
             except json.JSONDecodeError:
                 logger.error(f"Failed to parse long_term_messages as JSON: {long_term_messages}")
 
-        # 如果没有消息，直接返回
+        # If no messages, return directly
         if not structured_messages:
             logger.warning(f"No messages to write for user {actual_end_user_id}")
             return
@@ -80,29 +107,41 @@ async def write(storage_type, end_user_id, user_message, ai_message, user_rag_me
         logger.info(
             f"[WRITE] Submitting Celery task - user={actual_end_user_id}, messages={len(structured_messages)}, config={actual_config_id}")
         write_id = write_message_task.delay(
-            actual_end_user_id,  # end_user_id: 用户ID
-            structured_messages,  # message: JSON 字符串格式的消息列表
-            str(actual_config_id),  # config_id: 配置ID字符串
+            actual_end_user_id,  # end_user_id: User ID
+            structured_messages,  # message: JSON string format message list
+            str(actual_config_id),  # config_id: Configuration ID string
             storage_type,  # storage_type: "neo4j"
-            user_rag_memory_id or ""  # user_rag_memory_id: RAG记忆ID（Neo4j模式下不使用）
+            user_rag_memory_id or ""  # user_rag_memory_id: RAG memory ID (not used in Neo4j mode)
         )
         logger.info(f"[WRITE] Celery task submitted - task_id={write_id}")
         write_status = get_task_memory_write_result(str(write_id))
         logger.info(f'[WRITE] Task result - user={actual_end_user_id}, status={write_status}')
-    finally:
-        db.close()
 
-async def term_memory_save(long_term_messages,actual_config_id,end_user_id,type,scope):
+
+async def term_memory_save(long_term_messages, actual_config_id, end_user_id, type, scope):
+    """
+    Save long-term memory data to database
+
+    Handles the storage of long-term memory data based on different strategies
+    (chunk-based or aggregate-based) and manages the transition from short-term
+    to long-term memory storage.
+
+    Args:
+        long_term_messages: Long-term message data to be saved
+        actual_config_id: Configuration identifier for memory settings
+        end_user_id: User identifier for memory association
+        type: Memory storage strategy type (STRATEGY_CHUNK or STRATEGY_AGGREGATE)
+        scope: Scope/window size for memory processing
+    """
     with get_db_context() as db_session:
         repo = LongTermMemoryRepository(db_session)
 
-
         from app.core.memory.agent.utils.redis_tool import write_store
         result = write_store.get_session_by_userid(end_user_id)
-        if type==AgentMemory_Long_Term.STRATEGY_CHUNK or AgentMemory_Long_Term.STRATEGY_AGGREGATE:
+        if type == AgentMemory_Long_Term.STRATEGY_CHUNK or AgentMemory_Long_Term.STRATEGY_AGGREGATE:
             data = await format_parsing(result, "dict")
             chunk_data = data[:scope]
-            if len(chunk_data)==scope:
+            if len(chunk_data) == scope:
                 repo.upsert(end_user_id, chunk_data)
                 logger.info(f'---------写入短长期-----------')
         else:
@@ -112,18 +151,23 @@ async def term_memory_save(long_term_messages,actual_config_id,end_user_id,type,
             logger.info(f'写入短长期：')
 
 
+"""Window-based dialogue processing"""
 
-'''根据窗口'''
-async def window_dialogue(end_user_id,langchain_messages,memory_config,scope):
-    '''
-    根据窗口获取redis数据,写入neo4j：
-     Args:
-        end_user_id: 终端用户ID
-        memory_config: 内存配置对象
-        langchain_messages：原始数据LIST
-        scope：窗口大小
-    '''
-    scope=scope
+
+async def window_dialogue(end_user_id, langchain_messages, memory_config, scope):
+    """
+    Process dialogue based on window size and write to Neo4j
+
+    Manages conversation data based on a sliding window approach. When the window
+    reaches the specified scope size, it triggers long-term memory storage to Neo4j.
+
+    Args:
+        end_user_id: Terminal user identifier
+        memory_config: Memory configuration object containing settings
+        langchain_messages: Original message data list
+        scope: Window size determining when to trigger long-term storage
+    """
+    scope = scope
     is_end_user_id = count_store.get_sessions_count(end_user_id)
     if is_end_user_id is not False:
         is_end_user_id = count_store.get_sessions_count(end_user_id)[0]
@@ -135,50 +179,72 @@ async def window_dialogue(end_user_id,langchain_messages,memory_config,scope):
     elif int(is_end_user_id) == int(scope):
         logger.info('写入长期记忆NEO4J')
         formatted_messages = (redis_messages)
-        # 获取 config_id（如果 memory_config 是对象，提取 config_id；否则直接使用）
+        # Get config_id (if memory_config is an object, extract config_id; otherwise use directly)
         if hasattr(memory_config, 'config_id'):
             config_id = memory_config.config_id
         else:
             config_id = memory_config
-        
-        await write(AgentMemory_Long_Term.STORAGE_NEO4J, end_user_id, "", "", None, end_user_id,
-                config_id, formatted_messages)
+
+        await write(
+            AgentMemory_Long_Term.STORAGE_NEO4J,
+            end_user_id,
+            "",
+            "",
+            None,
+            end_user_id,
+            config_id,
+            formatted_messages
+        )
         count_store.update_sessions_count(end_user_id, 1, langchain_messages)
     else:
         count_store.save_sessions_count(end_user_id, 1, langchain_messages)
 
 
-"""根据时间"""
-async def memory_long_term_storage(end_user_id,memory_config,time):
-    '''
-    根据时间获取redis数据,写入neo4j：
-     Args:
-        end_user_id: 终端用户ID
-        memory_config: 内存配置对象
-    '''
+"""Time-based memory processing"""
+
+
+async def memory_long_term_storage(end_user_id, memory_config, time):
+    """
+    Process memory storage based on time intervals and write to Neo4j
+
+    Retrieves Redis data based on time intervals and writes it to Neo4j for
+    long-term storage. This function handles time-based memory consolidation.
+
+    Args:
+        end_user_id: Terminal user identifier
+        memory_config: Memory configuration object containing settings
+        time: Time interval for data retrieval
+    """
     long_time_data = write_store.find_user_recent_sessions(end_user_id, time)
-    format_messages = (long_time_data)
-    messages=[]
-    memory_config=memory_config.config_id
+    format_messages = long_time_data
+    messages = []
+    memory_config = memory_config.config_id
     for i in format_messages:
-        message=json.loads(i['Query'])
-        messages+= message
-    if format_messages!=[]:
+        message = json.loads(i['Query'])
+        messages += message
+    if format_messages:
         await write(AgentMemory_Long_Term.STORAGE_NEO4J, end_user_id, "", "", None, end_user_id,
                     memory_config, messages)
-'''聚合判断'''
+
+
 async def aggregate_judgment(end_user_id: str, ori_messages: list, memory_config) -> dict:
     """
-    聚合判断函数：判断输入句子和历史消息是否描述同一事件
+    Aggregation judgment function: determine if input sentence and historical messages describe the same event
+
+    Uses LLM-based analysis to determine whether new messages should be aggregated with existing
+    historical data or stored as separate events. This helps optimize memory storage and retrieval.
     
     Args:
-        end_user_id: 终端用户ID
-        ori_messages: 原始消息列表，格式如 [{"role": "user", "content": "..."}, {"role": "assistant", "content": "..."}]
-        memory_config: 内存配置对象
-    """
+        end_user_id: Terminal user identifier
+        ori_messages: Original message list, format like [{"role": "user", "content": "..."}, {"role": "assistant", "content": "..."}]
+        memory_config: Memory configuration object containing LLM settings
 
+    Returns:
+        dict: Aggregation judgment result containing is_same_event flag and processed output
+    """
+    history = None
     try:
-        # 1. 获取历史会话数据（使用新方法）
+        # 1. Get historical session data (using new method)
         result = write_store.get_all_sessions_by_end_user_id(end_user_id)
         history = await format_parsing(result)
         if not result:
@@ -210,7 +276,7 @@ async def aggregate_judgment(end_user_id: str, ori_messages: list, memory_config
         output_value = structured.output
         if isinstance(output_value, list):
             output_value = [
-                {"role": msg.role, "content": msg.content} 
+                {"role": msg.role, "content": msg.content}
                 for msg in output_value
             ]
 
@@ -223,16 +289,16 @@ async def aggregate_judgment(end_user_id: str, ori_messages: list, memory_config
             await write("neo4j", end_user_id, "", "", None, end_user_id,
                         memory_config.config_id, output_value)
         return result_dict
-        
+
     except Exception as e:
         print(f"[aggregate_judgment] 发生错误: {e}")
         import traceback
         traceback.print_exc()
-        
+
         return {
             "is_same_event": False,
             "output": ori_messages,
             "messages": ori_messages,
             "history": history if 'history' in locals() else [],
             "error": str(e)
-        }
+        }

api/app/core/memory/agent/langgraph_graph/tools/tool.py

@@ -2,41 +2,53 @@ import asyncio
 import json
 from datetime import datetime, timedelta
 
-
 from langchain.tools import tool
 from pydantic import BaseModel, Field
 
-
 from app.core.memory.src.search import (
     search_by_temporal,
     search_by_keyword_temporal,
 )
 
+
 def extract_tool_message_content(response):
-    """从agent响应中提取ToolMessage内容和工具名称"""
+    """
+    Extract ToolMessage content and tool names from agent response
+
+    Parses agent response messages to extract tool execution results and metadata.
+    Handles JSON parsing and provides structured access to tool output data.
+
+    Args:
+        response: Agent response dictionary containing messages
+
+    Returns:
+        dict: Dictionary containing tool_name and parsed content, or None if no tool message found
+            - tool_name: Name of the executed tool
+            - content: Parsed tool execution result (JSON or raw text)
+    """
     messages = response.get('messages', [])
 
     for message in messages:
         if hasattr(message, 'tool_call_id') and hasattr(message, 'content'):
-            # 这是一个ToolMessage
+            # This is a ToolMessage
             tool_content = message.content
             tool_name = None
 
-            # 尝试获取工具名称
+            # Try to get tool name
             if hasattr(message, 'name'):
                 tool_name = message.name
             elif hasattr(message, 'tool_name'):
                 tool_name = message.tool_name
 
             try:
-                # 解析JSON内容
+                # Parse JSON content
                 parsed_content = json.loads(tool_content)
                 return {
                     'tool_name': tool_name,
                     'content': parsed_content
                 }
             except json.JSONDecodeError:
-                # 如果不是JSON格式，直接返回内容
+                # If not JSON format, return content directly
                 return {
                     'tool_name': tool_name,
                     'content': tool_content
@@ -46,38 +58,61 @@ def extract_tool_message_content(response):
 
 
 class TimeRetrievalInput(BaseModel):
-    """时间检索工具的输入模式"""
+    """
+    Input schema for time retrieval tool
+
+    Defines the expected input parameters for time-based retrieval operations.
+    Used for validation and documentation of tool parameters.
+
+    Attributes:
+        context: User input query content for search
+        end_user_id: Group ID for filtering search results, defaults to test user
+    """
     context: str = Field(description="用户输入的查询内容")
     end_user_id: str = Field(default="88a459f5_text09", description="组ID，用于过滤搜索结果")
 
+
 def create_time_retrieval_tool(end_user_id: str):
     """
-    创建一个带有特定end_user_id的TimeRetrieval工具（同步版本），用于按时间范围搜索语句(Statements)
+    Create a TimeRetrieval tool with specific end_user_id (synchronous version) for searching statements by time range
+
+    Creates a specialized time-based retrieval tool that searches for statements within
+    specified time ranges. Includes field cleaning functionality to remove unnecessary
+    metadata from search results.
+
+    Args:
+        end_user_id: User identifier for scoping search results
+
+    Returns:
+        function: Configured TimeRetrievalWithGroupId tool function
     """
-    
+
     def clean_temporal_result_fields(data):
         """
-        清理时间搜索结果中不需要的字段，并修改结构
+        Clean unnecessary fields from temporal search results and modify structure
+
+        Removes metadata fields that are not needed for end-user consumption and
+        restructures the response format for better usability.
         
         Args:
-            data: 要清理的数据
+            data: Data to be cleaned (dict, list, or other types)
             
         Returns:
-            清理后的数据
+            Cleaned data with unnecessary fields removed
         """
-        # 需要过滤的字段列表
+        # List of fields to filter out
         fields_to_remove = {
-            'id', 'apply_id', 'user_id', 'chunk_id', 'created_at', 
+            'id', 'apply_id', 'user_id', 'chunk_id', 'created_at',
             'valid_at', 'invalid_at', 'statement_ids'
         }
-        
+
         if isinstance(data, dict):
             cleaned = {}
             for key, value in data.items():
                 if key == 'statements' and isinstance(value, dict) and 'statements' in value:
-                    # 将 statements: {"statements": [...]} 改为 time_search: {"statements": [...]}
+                    # Change statements: {"statements": [...]} to time_search: {"statements": [...]}
                     cleaned_value = clean_temporal_result_fields(value)
-                    # 进一步将内部的 statements 改为 time_search
+                    # Further change internal statements to time_search
                     if 'statements' in cleaned_value:
                         cleaned['results'] = {
                             'time_search': cleaned_value['statements']
@@ -91,26 +126,35 @@ def create_time_retrieval_tool(end_user_id: str):
             return [clean_temporal_result_fields(item) for item in data]
         else:
             return data
-    
+
     @tool
-    def TimeRetrievalWithGroupId(context: str, start_date: str = None, end_date: str = None, end_user_id_param: str = None, clean_output: bool = True) -> str:
+    def TimeRetrievalWithGroupId(context: str, start_date: str = None, end_date: str = None,
+                                 end_user_id_param: str = None, clean_output: bool = True) -> str:
         """
-        优化的时间检索工具，只结合时间范围搜索（同步版本），自动过滤不需要的元数据字段
-        显式接收参数：
-        - context: 查询上下文内容
-        - start_date: 开始时间（可选，格式：YYYY-MM-DD）
-        - end_date: 结束时间（可选，格式：YYYY-MM-DD）
-        - end_user_id_param: 组ID（可选，用于覆盖默认组ID）
-        - clean_output: 是否清理输出中的元数据字段
-        -end_date 需要根据用户的描述获取结束的时间，输出格式用strftime("%Y-%m-%d")
+        Optimized time retrieval tool, combines time range search only (synchronous version), automatically filters unnecessary metadata fields
+
+        Performs time-based search operations with automatic metadata filtering. Supports
+        flexible date range specification and provides clean, user-friendly output.
+
+        Explicit parameters:
+        - context: Query context content
+        - start_date: Start time (optional, format: YYYY-MM-DD)
+        - end_date: End time (optional, format: YYYY-MM-DD)
+        - end_user_id_param: Group ID (optional, overrides default group ID)
+        - clean_output: Whether to clean metadata fields from output
+        - end_date needs to be obtained based on user description, output format uses strftime("%Y-%m-%d")
+
+        Returns:
+            str: JSON formatted search results with temporal data
         """
+
         async def _async_search():
-            # 使用传入的参数或默认值
+            # Use passed parameters or default values
             actual_end_user_id = end_user_id_param or end_user_id
             actual_end_date = end_date or datetime.now().strftime("%Y-%m-%d")
             actual_start_date = start_date or (datetime.now() - timedelta(days=7)).strftime("%Y-%m-%d")
             
-            # 基本时间搜索
+            # Basic time search
             results = await search_by_temporal(
                 end_user_id=actual_end_user_id,
                 start_date=actual_start_date,
@@ -118,33 +162,43 @@ def create_time_retrieval_tool(end_user_id: str):
                 limit=10
             )
             
-            # 清理结果中不需要的字段
+            # Clean unnecessary fields from results
             if clean_output:
                 cleaned_results = clean_temporal_result_fields(results)
             else:
                 cleaned_results = results
 
             return json.dumps(cleaned_results, ensure_ascii=False, indent=2)
-        
+
         return asyncio.run(_async_search())
 
     @tool
-    def KeywordTimeRetrieval(context: str, days_back: int = 7, start_date: str = None, end_date: str = None, clean_output: bool = True) -> str:
+    def KeywordTimeRetrieval(context: str, days_back: int = 7, start_date: str = None, end_date: str = None,
+                             clean_output: bool = True) -> str:
         """
-        优化的关键词时间检索工具，结合关键词和时间范围搜索（同步版本），自动过滤不需要的元数据字段
-        显式接收参数：
-        - context: 查询内容
-        - days_back: 向前搜索的天数，默认7天
-        - start_date: 开始时间（可选，格式：YYYY-MM-DD）
-        - end_date: 结束时间（可选，格式：YYYY-MM-DD）
-        - clean_output: 是否清理输出中的元数据字段
-        - end_date 需要根据用户的描述获取结束的时间，输出格式用strftime("%Y-%m-%d")
+        Optimized keyword time retrieval tool, combines keyword and time range search (synchronous version), automatically filters unnecessary metadata fields
+
+        Performs combined keyword and temporal search operations with automatic metadata
+        filtering. Provides more targeted search results by combining content relevance
+        with time-based filtering.
+
+        Explicit parameters:
+        - context: Query content for keyword matching
+        - days_back: Number of days to search backwards, default 7 days
+        - start_date: Start time (optional, format: YYYY-MM-DD)
+        - end_date: End time (optional, format: YYYY-MM-DD)
+        - clean_output: Whether to clean metadata fields from output
+        - end_date needs to be obtained based on user description, output format uses strftime("%Y-%m-%d")
+
+        Returns:
+            str: JSON formatted search results combining keyword and temporal data
         """
+
         async def _async_search():
             actual_end_date = end_date or datetime.now().strftime("%Y-%m-%d")
             actual_start_date = start_date or (datetime.now() - timedelta(days=days_back)).strftime("%Y-%m-%d")
 
-            # 关键词时间搜索
+            # Keyword time search
             results = await search_by_keyword_temporal(
                 query_text=context,
                 end_user_id=end_user_id,
@@ -153,7 +207,7 @@ def create_time_retrieval_tool(end_user_id: str):
                 limit=15
             )
             
-            # 清理结果中不需要的字段
+            # Clean unnecessary fields from results
             if clean_output:
                 cleaned_results = clean_temporal_result_fields(results)
             else:
@@ -162,51 +216,60 @@ def create_time_retrieval_tool(end_user_id: str):
             return json.dumps(cleaned_results, ensure_ascii=False, indent=2)
 
         return asyncio.run(_async_search())
-    
+
     return TimeRetrievalWithGroupId
 
 
 def create_hybrid_retrieval_tool_async(memory_config, **search_params):
     """
-    创建混合检索工具，使用run_hybrid_search进行混合检索，优化输出格式并过滤不需要的字段
+    Create hybrid retrieval tool using run_hybrid_search for hybrid retrieval, optimize output format and filter unnecessary fields
+
+    Creates an advanced hybrid search tool that combines multiple search strategies
+    (keyword, vector, hybrid) with automatic result cleaning and formatting.
     
     Args:
-        memory_config: 内存配置对象
-        **search_params: 搜索参数，包含end_user_id, limit, include等
+        memory_config: Memory configuration object containing LLM and search settings
+        **search_params: Search parameters including end_user_id, limit, include, etc.
+
+    Returns:
+        function: Configured HybridSearch tool function with async capabilities
     """
-    
+
     def clean_result_fields(data):
         """
-        递归清理结果中不需要的字段
+        Recursively clean unnecessary fields from results
+
+        Removes metadata fields that are not needed for end-user consumption,
+        improving readability and reducing response size.
         
         Args:
-            data: 要清理的数据（可能是字典、列表或其他类型）
+            data: Data to be cleaned (can be dict, list, or other types)
             
         Returns:
-            清理后的数据
+            Cleaned data with unnecessary fields removed
         """
-        # 需要过滤的字段列表
-        # TODO: fact_summary 功能暂时禁用，待后续开发完善后启用
+        # List of fields to filter out
+        # TODO: fact_summary functionality temporarily disabled, will be enabled after future development
         fields_to_remove = {
-            'invalid_at', 'valid_at', 'chunk_id_from_rel', 'entity_ids', 
-            'expired_at', 'created_at', 'chunk_id', 'id', 'apply_id', 
-            'user_id', 'statement_ids', 'updated_at',"chunk_ids"  ,"fact_summary"
+            'invalid_at', 'valid_at', 'chunk_id_from_rel', 'entity_ids',
+            'expired_at', 'created_at', 'chunk_id', 'id', 'apply_id',
+            'user_id', 'statement_ids', 'updated_at', "chunk_ids", "fact_summary"
         }
-        
+
         if isinstance(data, dict):
-            # 对字典进行清理
+            # Clean dictionary
             cleaned = {}
             for key, value in data.items():
                 if key not in fields_to_remove:
-                    cleaned[key] = clean_result_fields(value)  # 递归清理嵌套数据
+                    cleaned[key] = clean_result_fields(value)  # Recursively clean nested data
             return cleaned
         elif isinstance(data, list):
-            # 对列表中的每个元素进行清理
+            # Clean each element in list
             return [clean_result_fields(item) for item in data]
         else:
-            # 其他类型直接返回
+            # Return other types directly
             return data
-    
+
     @tool
     async def HybridSearch(
         context: str, 
@@ -216,57 +279,63 @@ def create_hybrid_retrieval_tool_async(memory_config, **search_params):
         rerank_alpha: float = 0.6,
         use_forgetting_rerank: bool = False,
         use_llm_rerank: bool = False,
-        clean_output: bool = True  # 新增：是否清理输出字段
+        clean_output: bool = True  # New: whether to clean output fields
     ) -> str:
         """
-        优化的混合检索工具，支持关键词、向量和混合搜索，自动过滤不需要的元数据字段
+        Optimized hybrid retrieval tool, supports keyword, vector and hybrid search, automatically filters unnecessary metadata fields
+
+        Provides comprehensive search capabilities combining multiple search strategies
+        with intelligent result ranking and automatic metadata filtering for clean output.
         
         Args:
-            context: 查询内容
-            search_type: 搜索类型 ('keyword', 'embedding', 'hybrid')
-            limit: 结果数量限制
-            end_user_id: 组ID，用于过滤搜索结果
-            rerank_alpha: 重排序权重参数
-            use_forgetting_rerank: 是否使用遗忘重排序
-            use_llm_rerank: 是否使用LLM重排序
-            clean_output: 是否清理输出中的元数据字段
+            context: Query content for search
+            search_type: Search type ('keyword', 'embedding', 'hybrid')
+            limit: Result quantity limit
+            end_user_id: Group ID for filtering search results
+            rerank_alpha: Reranking weight parameter for result scoring
+            use_forgetting_rerank: Whether to use forgetting-based reranking
+            use_llm_rerank: Whether to use LLM-based reranking
+            clean_output: Whether to clean metadata fields from output
+
+        Returns:
+            str: JSON formatted comprehensive search results
         """
         try:
-            # 导入run_hybrid_search函数
+            # Import run_hybrid_search function
             from app.core.memory.src.search import run_hybrid_search
             
-            # 合并参数，优先使用传入的参数
+            # Merge parameters, prioritize passed parameters
             final_params = {
                 "query_text": context,
                 "search_type": search_type,
                 "end_user_id": end_user_id or search_params.get("end_user_id"),
                 "limit": limit or search_params.get("limit", 10),
                 "include": search_params.get("include", ["summaries", "statements", "chunks", "entities"]),
-                "output_path": None,  # 不保存到文件
+                "output_path": None,  # Don't save to file
                 "memory_config": memory_config,
                 "rerank_alpha": rerank_alpha,
                 "use_forgetting_rerank": use_forgetting_rerank,
                 "use_llm_rerank": use_llm_rerank
             }
             
-            # 执行混合检索
+            # Execute hybrid retrieval
             raw_results = await run_hybrid_search(**final_params)
             
-            # 清理结果中不需要的字段
+            # Clean unnecessary fields from results
             if clean_output:
                 cleaned_results = clean_result_fields(raw_results)
             else:
                 cleaned_results = raw_results
             
-            # 格式化返回结果
+            # Format return results
             formatted_results = {
                 "search_query": context,
                 "search_type": search_type,
                 "results": cleaned_results
             }
-            
+
             return json.dumps(formatted_results, ensure_ascii=False, indent=2, default=str)
-            
+
         except Exception as e:
             error_result = {
                 "error": f"混合检索失败: {str(e)}",
@@ -275,38 +344,52 @@ def create_hybrid_retrieval_tool_async(memory_config, **search_params):
                 "timestamp": datetime.now().isoformat()
             }
             return json.dumps(error_result, ensure_ascii=False, indent=2)
-    
+
     return HybridSearch
 
 
 def create_hybrid_retrieval_tool_sync(memory_config, **search_params):
     """
-    创建同步版本的混合检索工具，优化输出格式并过滤不需要的字段
+    Create synchronous version of hybrid retrieval tool, optimize output format and filter unnecessary fields
+
+    Creates a synchronous wrapper around the async hybrid search functionality,
+    making it compatible with synchronous tool execution environments.
     
     Args:
-        memory_config: 内存配置对象
-        **search_params: 搜索参数
+        memory_config: Memory configuration object containing search settings
+        **search_params: Search parameters for configuration
+
+    Returns:
+        function: Configured HybridSearchSync tool function
     """
+
     @tool
     def HybridSearchSync(
-        context: str, 
-        search_type: str = "hybrid",
-        limit: int = 10,
-        end_user_id: str = None,
-        clean_output: bool = True
+            context: str,
+            search_type: str = "hybrid",
+            limit: int = 10,
+            end_user_id: str = None,
+            clean_output: bool = True
     ) -> str:
         """
-        优化的混合检索工具（同步版本），自动过滤不需要的元数据字段
+        Optimized hybrid retrieval tool (synchronous version), automatically filters unnecessary metadata fields
+
+        Provides the same hybrid search capabilities as the async version but in a
+        synchronous execution context. Automatically handles async-to-sync conversion.
         
         Args:
-            context: 查询内容
-            search_type: 搜索类型 ('keyword', 'embedding', 'hybrid')
-            limit: 结果数量限制
-            end_user_id: 组ID，用于过滤搜索结果
-            clean_output: 是否清理输出中的元数据字段
+            context: Query content for search
+            search_type: Search type ('keyword', 'embedding', 'hybrid')
+            limit: Result quantity limit
+            end_user_id: Group ID for filtering search results
+            clean_output: Whether to clean metadata fields from output
+
+        Returns:
+            str: JSON formatted search results
         """
+
         async def _async_search():
-            # 创建异步工具并执行
+            # Create async tool and execute
             async_tool = create_hybrid_retrieval_tool_async(memory_config, **search_params)
             return await async_tool.ainvoke({
                 "context": context,
@@ -315,7 +398,7 @@ def create_hybrid_retrieval_tool_sync(memory_config, **search_params):
                 "end_user_id": end_user_id,
                 "clean_output": clean_output
             })
-        
+
         return asyncio.run(_async_search())
-    
-    return HybridSearchSync
+
+    return HybridSearchSync

api/app/core/memory/agent/langgraph_graph/tools/write_tool.py

@@ -1,20 +1,28 @@
 import json
 
 from langchain_core.messages import HumanMessage, AIMessage
-async def format_parsing(messages: list,type:str='string'):
+
+
+async def format_parsing(messages: list, type: str = 'string'):
     """
-    格式化解析消息列表
+    Format and parse message lists into different output types
+
+    Processes message lists from storage and converts them into either string format
+    or dictionary format based on the specified type parameter. Handles JSON parsing
+    and role-based message organization.
     
     Args:
-        messages: 消息列表
-        type: 返回类型 ('string' 或 'dict')
+        messages: List of message objects from storage containing message data
+        type: Return type specification ('string' for text format, 'dict' for key-value pairs)
         
     Returns:
-        格式化后的消息列表
+        list: Formatted message list in the specified format
+            - 'string': List of formatted text messages with role prefixes
+            - 'dict': List of dictionaries mapping user messages to AI responses
     """
     result = []
-    user=[]
-    ai=[]
+    user = []
+    ai = []
 
     for message in messages:
         hstory_messages = message['messages']
@@ -24,25 +32,38 @@ async def format_parsing(messages: list,type:str='string'):
                 role = content['role']
                 content = content['content']
                 if type == "string":
-                    if role == 'human' or role=="user":
+                    if role == 'human' or role == "user":
                         content = '用户:' + content
                     else:
                         content = 'AI:' + content
                     result.append(content)
-                if type == "dict" :
-                    if role == 'human'  or role=="user":
-                        user.append( content)
+                if type == "dict":
+                    if role == 'human' or role == "user":
+                        user.append(content)
                     else:
                         ai.append(content)
     if type == "dict":
-        for key,values in zip(user,ai):
-            result.append({key:values})
+        for key, values in zip(user, ai):
+            result.append({key: values})
     return result
 
+
 async def messages_parse(messages: list | dict):
-    user=[]
-    ai=[]
-    database=[]
+    """
+    Parse messages from storage format into user-AI conversation pairs
+
+    Extracts and organizes conversation data from stored message format,
+    separating user and AI messages and pairing them for database storage.
+
+    Args:
+        messages: List or dictionary containing stored message data with Query fields
+
+    Returns:
+        list: List of dictionaries containing user-AI message pairs for database storage
+    """
+    user = []
+    ai = []
+    database = []
     for message in messages:
         Query = message['Query']
         Query = json.loads(Query)
@@ -54,10 +75,23 @@ async def messages_parse(messages: list | dict):
                 ai.append(data['content'])
     for key, values in zip(user, ai):
         database.append({key, values})
-    return  database
+    return database
 
 
-async def agent_chat_messages(user_content,ai_content):
+async def agent_chat_messages(user_content, ai_content):
+    """
+    Create structured chat message format for agent conversations
+
+    Formats user and AI content into a standardized message structure suitable
+    for agent processing and storage. Creates role-based message objects.
+
+    Args:
+        user_content: User's message content string
+        ai_content: AI's response content string
+
+    Returns:
+        list: List of structured message dictionaries with role and content fields
+    """
     messages = [
         {
             "role": "user",

api/app/core/memory/agent/langgraph_graph/write_graph.py

@@ -13,7 +13,6 @@ from app.core.memory.agent.langgraph_graph.nodes.write_nodes import write_node
 from app.schemas.memory_agent_schema import AgentMemory_Long_Term
 from app.services.memory_config_service import MemoryConfigService
 
-
 warnings.filterwarnings("ignore", category=RuntimeWarning)
 logger = get_agent_logger(__name__)
 
@@ -42,10 +41,26 @@ async def make_write_graph():
 
     yield graph
 
-async def long_term_storage(long_term_type:str="chunk",langchain_messages:list=[],memory_config:str='',end_user_id:str='',scope:int=6):
-    from app.core.memory.agent.langgraph_graph.routing.write_router import memory_long_term_storage, window_dialogue,aggregate_judgment
+
+async def long_term_storage(long_term_type: str = "chunk", langchain_messages: list = [], memory_config: str = '',
+                            end_user_id: str = '', scope: int = 6):
+    """
+    Handle long-term memory storage with different strategies
+
+    Supports multiple storage strategies including chunk-based, time-based,
+    and aggregate judgment approaches for long-term memory persistence.
+
+    Args:
+        long_term_type: Storage strategy type ('chunk', 'time', 'aggregate')
+        langchain_messages: List of messages to store
+        memory_config: Memory configuration identifier
+        end_user_id: User group identifier
+        scope: Scope parameter for chunk-based storage (default: 6)
+    """
+    from app.core.memory.agent.langgraph_graph.routing.write_router import memory_long_term_storage, window_dialogue, \
+        aggregate_judgment
     from app.core.memory.agent.utils.redis_tool import write_store
-    write_store.save_session_write(end_user_id,  (langchain_messages))
+    write_store.save_session_write(end_user_id, langchain_messages)
     # 获取数据库会话
     with get_db_context() as db_session:
         config_service = MemoryConfigService(db_session)
@@ -53,26 +68,39 @@ async def long_term_storage(long_term_type:str="chunk",langchain_messages:list=[
             config_id=memory_config,  # 改为整数
             service_name="MemoryAgentService"
         )
-        if long_term_type=='chunk':
-            '''方案一:对话窗口6轮对话'''
-            await window_dialogue(end_user_id,langchain_messages,memory_config,scope)
-        if long_term_type=='time':
-            """时间"""
-            await memory_long_term_storage(end_user_id, memory_config,5)
-        if  long_term_type=='aggregate':
-            """方案三：聚合判断"""
+        if long_term_type == AgentMemory_Long_Term.STRATEGY_CHUNK:
+            '''Strategy 1: Dialogue window with 6 rounds of conversation'''
+            await window_dialogue(end_user_id, langchain_messages, memory_config, scope)
+        if long_term_type == AgentMemory_Long_Term.STRATEGY_TIME:
+            """Time-based strategy"""
+            await memory_long_term_storage(end_user_id, memory_config, AgentMemory_Long_Term.TIME_SCOPE)
+        if long_term_type == AgentMemory_Long_Term.STRATEGY_AGGREGATE:
+            """Strategy 3: Aggregate judgment"""
             await aggregate_judgment(end_user_id, langchain_messages, memory_config)
 
 
+async def write_long_term(storage_type, end_user_id, message_chat, aimessages, user_rag_memory_id, actual_config_id):
+    """
+    Write long-term memory with different storage types
 
-async def write_long_term(storage_type,end_user_id,message_chat,aimessages,user_rag_memory_id,actual_config_id):
+    Handles both RAG-based storage and traditional memory storage approaches.
+    For traditional storage, uses chunk-based strategy with paired user-AI messages.
+
+    Args:
+        storage_type: Type of storage (RAG or traditional)
+        end_user_id: User group identifier
+        message_chat: User message content
+        aimessages: AI response messages
+        user_rag_memory_id: RAG memory identifier
+        actual_config_id: Actual configuration ID
+    """
     from app.core.memory.agent.langgraph_graph.routing.write_router import write_rag_agent
     from app.core.memory.agent.langgraph_graph.routing.write_router import term_memory_save
-    from app.core.memory.agent.langgraph_graph.tools.write_tool import  agent_chat_messages
+    from app.core.memory.agent.langgraph_graph.tools.write_tool import agent_chat_messages
     if storage_type == AgentMemory_Long_Term.STORAGE_RAG:
         await write_rag_agent(end_user_id, message_chat, aimessages, user_rag_memory_id)
     else:
-        # AI 回复写入（用户消息和 AI 回复配对，一次性写入完整对话）
+        # AI reply writing (user messages and AI replies paired, written as complete dialogue at once)
         CHUNK = AgentMemory_Long_Term.STRATEGY_CHUNK
         SCOPE = AgentMemory_Long_Term.DEFAULT_SCOPE
         long_term_messages = await agent_chat_messages(message_chat, aimessages)
@@ -101,4 +129,4 @@ async def write_long_term(storage_type,end_user_id,message_chat,aimessages,user_
 #
 # if __name__ == "__main__":
 #     import asyncio
-#     asyncio.run(main())
+#     asyncio.run(main())

api/app/core/memory/agent/utils/llm_tools.py

@@ -8,10 +8,11 @@ from langgraph.graph import add_messages
 
 PROJECT_ROOT_ = str(Path(__file__).resolve().parents[3])
 
+
 class WriteState(TypedDict):
-    '''
+    """
     Langgrapg Writing TypedDict
-    '''
+    """
     messages: Annotated[list[AnyMessage], add_messages]
     end_user_id: str
     errors: list[dict]  # Track errors: [{"tool": "tool_name", "error": "message"}]
@@ -20,6 +21,7 @@ class WriteState(TypedDict):
     data: str
     language: str  # 语言类型 ("zh" 中文, "en" 英文)
 
+
 class ReadState(TypedDict):
     """
     LangGraph 工作流状态定义
@@ -43,18 +45,20 @@ class ReadState(TypedDict):
     config_id: str
     data: str  # 新增字段用于传递内容
     spit_data: dict  # 新增字段用于传递问题分解结果
-    problem_extension:dict
+    problem_extension: dict
     storage_type: str
     user_rag_memory_id: str
     llm_id: str
     embedding_id: str
     memory_config: object  # 新增字段用于传递内存配置对象
-    retrieve:dict
+    retrieve: dict
     RetrieveSummary: dict
     InputSummary: dict
     verify: dict
     SummaryFails: dict
     summary: dict
+
+
 class COUNTState:
     """
     工作流对话检索内容计数器
@@ -99,6 +103,7 @@ class COUNTState:
         self.total = 0
         print("[COUNTState] 已重置为 0")
 
+
 def deduplicate_entries(entries):
     seen = set()
     deduped = []
@@ -109,6 +114,7 @@ def deduplicate_entries(entries):
             deduped.append(entry)
     return deduped
 
+
 def merge_to_key_value_pairs(data, query_key, result_key):
     grouped = defaultdict(list)
     for item in data:
@@ -142,4 +148,4 @@ def convert_extended_question_to_question(data):
         return [convert_extended_question_to_question(item) for item in data]
     else:
         # 其他类型直接返回
-        return data
+        return data

api/app/core/memory/agent/utils/write_tools.py

@@ -165,7 +165,9 @@ async def write(
                 statement_chunk_edges=all_statement_chunk_edges,
                 statement_entity_edges=all_statement_entity_edges,
                 entity_edges=all_entity_entity_edges,
-                connector=neo4j_connector
+                connector=neo4j_connector,
+                config_id=config_id,
+                llm_model_id=str(memory_config.llm_model_id) if memory_config.llm_model_id else None,
             )
             if success:
                 logger.info("Successfully saved all data to Neo4j")

api/app/core/memory/storage_services/clustering_engine/__init__.py

@@ -0,0 +1,3 @@
+from app.core.memory.storage_services.clustering_engine.label_propagation import LabelPropagationEngine
+
+__all__ = ["LabelPropagationEngine"]

api/app/core/memory/storage_services/clustering_engine/label_propagation.py

@@ -0,0 +1,508 @@
+"""标签传播聚类引擎
+
+基于 ZEP 论文的动态标签传播算法，对 Neo4j 中的 ExtractedEntity 节点进行社区聚类。
+
+支持两种模式：
+- 全量初始化（full_clustering）：首次运行，对所有实体做完整 LPA 迭代
+- 增量更新（incremental_update）：新实体到达时，只处理新实体及其邻居
+"""
+
+import logging
+import uuid
+from math import sqrt
+from typing import Dict, List, Optional
+
+from app.repositories.neo4j.community_repository import CommunityRepository
+from app.repositories.neo4j.neo4j_connector import Neo4jConnector
+
+logger = logging.getLogger(__name__)
+
+# 全量迭代最大轮数，防止不收敛
+MAX_ITERATIONS = 10
+# 社区摘要核心实体数量
+CORE_ENTITY_LIMIT = 5
+
+
+def _cosine_similarity(v1: Optional[List[float]], v2: Optional[List[float]]) -> float:
+    """计算两个向量的余弦相似度，任一为空则返回 0。"""
+    if not v1 or not v2 or len(v1) != len(v2):
+        return 0.0
+    dot = sum(a * b for a, b in zip(v1, v2))
+    norm1 = sqrt(sum(a * a for a in v1))
+    norm2 = sqrt(sum(b * b for b in v2))
+    if norm1 == 0 or norm2 == 0:
+        return 0.0
+    return dot / (norm1 * norm2)
+
+
+def _weighted_vote(
+    neighbors: List[Dict],
+    self_embedding: Optional[List[float]],
+) -> Optional[str]:
+    """
+    加权多数投票，选出得票最高的社区。
+
+    权重 = 语义相似度（name_embedding 余弦）* activation_value 加成
+    没有 community_id 的邻居不参与投票。
+    """
+    votes: Dict[str, float] = {}
+    for nb in neighbors:
+        cid = nb.get("community_id")
+        if not cid:
+            continue
+        sem = _cosine_similarity(self_embedding, nb.get("name_embedding"))
+        act = nb.get("activation_value") or 0.5
+        # 语义相似度权重 0.6，激活值权重 0.4
+        weight = 0.6 * sem + 0.4 * act
+        votes[cid] = votes.get(cid, 0.0) + weight
+
+    if not votes:
+        return None
+    return max(votes, key=votes.__getitem__)
+
+
+class LabelPropagationEngine:
+    """标签传播聚类引擎"""
+
+    def __init__(
+        self,
+        connector: Neo4jConnector,
+        config_id: Optional[str] = None,
+        llm_model_id: Optional[str] = None,
+        embedding_model_id: Optional[str] = None,
+    ):
+        self.connector = connector
+        self.repo = CommunityRepository(connector)
+        self.config_id = config_id
+        self.llm_model_id = llm_model_id
+        self.embedding_model_id = embedding_model_id
+
+    # ──────────────────────────────────────────────────────────────────────────
+    # 公开接口
+    # ──────────────────────────────────────────────────────────────────────────
+
+    async def run(
+        self,
+        end_user_id: str,
+        new_entity_ids: Optional[List[str]] = None,
+    ) -> None:
+        """
+        统一入口：自动判断全量还是增量。
+
+        - 若该用户尚无 Community 节点 → 全量初始化
+        - 否则 → 增量更新（仅处理 new_entity_ids）
+        """
+        has_communities = await self.repo.has_communities(end_user_id)
+        if not has_communities:
+            logger.info(f"[Clustering] 用户 {end_user_id} 首次聚类，执行全量初始化")
+            await self.full_clustering(end_user_id)
+        else:
+            if new_entity_ids:
+                logger.info(
+                    f"[Clustering] 增量更新，新实体数: {len(new_entity_ids)}"
+                )
+                await self.incremental_update(new_entity_ids, end_user_id)
+
+    async def full_clustering(self, end_user_id: str) -> None:
+        """
+        全量标签传播初始化。
+
+        1. 拉取所有实体，初始化每个实体为独立社区
+        2. 迭代：每轮对所有实体做邻居投票，更新社区标签
+        3. 直到标签不再变化或达到 MAX_ITERATIONS
+        4. 将最终标签写入 Neo4j
+        """
+        entities = await self.repo.get_all_entities(end_user_id)
+        if not entities:
+            logger.info(f"[Clustering] 用户 {end_user_id} 无实体，跳过全量聚类")
+            return
+
+        # 初始化：每个实体持有自己 id 作为社区标签
+        labels: Dict[str, str] = {e["id"]: e["id"] for e in entities}
+        embeddings: Dict[str, Optional[List[float]]] = {
+            e["id"]: e.get("name_embedding") for e in entities
+        }
+
+        # 预加载所有实体的邻居，避免迭代内 O(iterations * |E|) 次 Neo4j 往返
+        logger.info(f"[Clustering] 预加载 {len(entities)} 个实体的邻居图...")
+        neighbors_cache: Dict[str, List[Dict]] = await self.repo.get_all_entity_neighbors_batch(end_user_id)
+        logger.info(f"[Clustering] 邻居预加载完成，覆盖实体数: {len(neighbors_cache)}")
+
+        for iteration in range(MAX_ITERATIONS):
+            changed = 0
+            # 随机顺序（Python dict 在 3.7+ 保持插入顺序，这里直接遍历）
+            for entity in entities:
+                eid = entity["id"]
+                # 直接从缓存取邻居，不再发起 Neo4j 查询
+                neighbors = neighbors_cache.get(eid, [])
+
+                # 将邻居的当前内存标签注入（覆盖 Neo4j 中的旧值）
+                enriched = []
+                for nb in neighbors:
+                    nb_copy = dict(nb)
+                    nb_copy["community_id"] = labels.get(nb["id"], nb.get("community_id"))
+                    enriched.append(nb_copy)
+
+                new_label = _weighted_vote(enriched, embeddings.get(eid))
+                if new_label and new_label != labels[eid]:
+                    labels[eid] = new_label
+                    changed += 1
+
+            logger.info(
+                f"[Clustering] 全量迭代 {iteration + 1}/{MAX_ITERATIONS}，"
+                f"标签变化数: {changed}"
+            )
+            if changed == 0:
+                logger.info("[Clustering] 标签已收敛，提前结束迭代")
+                break
+
+        # 将最终标签写入 Neo4j
+        await self._flush_labels(labels, end_user_id)
+        pre_merge_count = len(set(labels.values()))
+        logger.info(
+            f"[Clustering] 全量迭代完成，共 {pre_merge_count} 个社区，"
+            f"{len(labels)} 个实体，开始后处理合并"
+        )
+
+        # 全量初始化后做一轮社区合并（基于 name_embedding 余弦相似度）
+        all_community_ids = list(set(labels.values()))
+        await self._evaluate_merge(all_community_ids, end_user_id)
+
+        logger.info(
+            f"[Clustering] 全量聚类完成，合并前 {pre_merge_count} 个社区，"
+            f"{len(labels)} 个实体"
+        )
+        # 为所有社区生成元数据
+        # 注意：_evaluate_merge 后部分社区已被合并消解，需重新从 Neo4j 查询实际存活的社区
+        # 不能复用 labels.values()，那里包含已被 dissolve 的旧社区 ID
+        surviving_communities = await self.repo.get_all_entities(end_user_id)
+        surviving_community_ids = list({
+            e.get("community_id") for e in surviving_communities
+            if e.get("community_id")
+        })
+        logger.info(f"[Clustering] 合并后实际存活社区数: {len(surviving_community_ids)}")
+        for cid in surviving_community_ids:
+            await self._generate_community_metadata(cid, end_user_id)
+
+    async def incremental_update(
+        self, new_entity_ids: List[str], end_user_id: str
+    ) -> None:
+        """
+        增量更新：只处理新实体及其邻居，不重跑全图。
+
+        1. 对每个新实体查询邻居
+        2. 加权多数投票决定社区归属
+        3. 若邻居无社区 → 创建新社区
+        4. 若邻居分属多个社区 → 评估是否合并
+        """
+        for entity_id in new_entity_ids:
+            await self._process_single_entity(entity_id, end_user_id)
+
+    # ──────────────────────────────────────────────────────────────────────────
+    # 内部方法
+    # ──────────────────────────────────────────────────────────────────────────
+
+    async def _process_single_entity(
+        self, entity_id: str, end_user_id: str
+    ) -> None:
+        """处理单个新实体的社区分配。"""
+        neighbors = await self.repo.get_entity_neighbors(entity_id, end_user_id)
+
+        # 查询自身 embedding（从邻居查询结果中无法获取，需单独查）
+        self_embedding = await self._get_entity_embedding(entity_id, end_user_id)
+
+        if not neighbors:
+            # 孤立实体：创建单成员社区
+            new_cid = self._new_community_id()
+            await self.repo.upsert_community(new_cid, end_user_id, member_count=1)
+            await self.repo.assign_entity_to_community(entity_id, new_cid, end_user_id)
+            logger.debug(f"[Clustering] 孤立实体 {entity_id} → 新社区 {new_cid}")
+            return
+
+        # 统计邻居社区分布
+        community_ids_in_neighbors = set(
+            nb["community_id"] for nb in neighbors if nb.get("community_id")
+        )
+
+        target_cid = _weighted_vote(neighbors, self_embedding)
+
+        if target_cid is None:
+            # 邻居都没有社区，连同新实体一起创建新社区
+            new_cid = self._new_community_id()
+            await self.repo.upsert_community(new_cid, end_user_id)
+            await self.repo.assign_entity_to_community(entity_id, new_cid, end_user_id)
+            for nb in neighbors:
+                await self.repo.assign_entity_to_community(
+                    nb["id"], new_cid, end_user_id
+                )
+            await self.repo.refresh_member_count(new_cid, end_user_id)
+            logger.debug(
+                f"[Clustering] 新实体 {entity_id} 与 {len(neighbors)} 个无社区邻居 → 新社区 {new_cid}"
+            )
+            await self._generate_community_metadata(new_cid, end_user_id)
+        else:
+            # 加入得票最多的社区
+            await self.repo.assign_entity_to_community(entity_id, target_cid, end_user_id)
+            await self.repo.refresh_member_count(target_cid, end_user_id)
+            logger.debug(f"[Clustering] 新实体 {entity_id} → 社区 {target_cid}")
+
+            # 若邻居分属多个社区，评估合并
+            if len(community_ids_in_neighbors) > 1:
+                await self._evaluate_merge(
+                    list(community_ids_in_neighbors), end_user_id
+                )
+            await self._generate_community_metadata(target_cid, end_user_id)
+
+    async def _evaluate_merge(
+        self, community_ids: List[str], end_user_id: str
+    ) -> None:
+        """
+        评估多个社区是否应合并。
+
+        策略：计算各社区成员 embedding 的平均向量，若两两余弦相似度 > 0.75 则合并。
+        合并时保留成员数最多的社区，其余成员迁移过来。
+
+        全量场景（社区数 > 20）使用批量查询，避免 N 次数据库往返。
+        """
+        MERGE_THRESHOLD = 0.85
+        BATCH_THRESHOLD = 20  # 超过此数量走批量查询
+
+        community_embeddings: Dict[str, Optional[List[float]]] = {}
+        community_sizes: Dict[str, int] = {}
+
+        if len(community_ids) > BATCH_THRESHOLD:
+            # 批量查询：一次拉取所有社区成员
+            all_members = await self.repo.get_all_community_members_batch(
+                community_ids, end_user_id
+            )
+            for cid in community_ids:
+                members = all_members.get(cid, [])
+                community_sizes[cid] = len(members)
+                valid_embeddings = [
+                    m["name_embedding"] for m in members if m.get("name_embedding")
+                ]
+                if valid_embeddings:
+                    dim = len(valid_embeddings[0])
+                    community_embeddings[cid] = [
+                        sum(e[i] for e in valid_embeddings) / len(valid_embeddings)
+                        for i in range(dim)
+                    ]
+                else:
+                    community_embeddings[cid] = None
+        else:
+            # 增量场景：逐个查询
+            for cid in community_ids:
+                members = await self.repo.get_community_members(cid, end_user_id)
+                community_sizes[cid] = len(members)
+                valid_embeddings = [
+                    m["name_embedding"] for m in members if m.get("name_embedding")
+                ]
+                if valid_embeddings:
+                    dim = len(valid_embeddings[0])
+                    community_embeddings[cid] = [
+                        sum(e[i] for e in valid_embeddings) / len(valid_embeddings)
+                        for i in range(dim)
+                    ]
+                else:
+                    community_embeddings[cid] = None
+
+        # 找出应合并的社区对
+        to_merge: List[tuple] = []
+        cids = list(community_ids)
+        for i in range(len(cids)):
+            for j in range(i + 1, len(cids)):
+                sim = _cosine_similarity(
+                    community_embeddings[cids[i]],
+                    community_embeddings[cids[j]],
+                )
+                if sim > MERGE_THRESHOLD:
+                    to_merge.append((cids[i], cids[j]))
+
+        logger.info(f"[Clustering] 发现 {len(to_merge)} 对可合并社区")
+
+        # 执行合并：逐对处理，每次合并后重新计算合并社区的平均向量
+        # 避免 union-find 链式传递导致语义不相关的社区被间接合并
+        # （A≈B、B≈C 不代表 A≈C，不能因传递性把 A/B/C 全部合并）
+        merged_into: Dict[str, str] = {}  # dissolve → keep 的最终映射
+
+        def get_root(x: str) -> str:
+            """路径压缩，找到 x 当前所属的根社区。"""
+            while x in merged_into:
+                merged_into[x] = merged_into.get(merged_into[x], merged_into[x])
+                x = merged_into[x]
+            return x
+
+        for c1, c2 in to_merge:
+            root1, root2 = get_root(c1), get_root(c2)
+            if root1 == root2:
+                continue
+
+            # 用合并后的最新平均向量重新验证相似度
+            # 防止链式传递：A≈B 合并后 B 的向量已更新，C 必须和新 B 相似才能合并
+            current_sim = _cosine_similarity(
+                community_embeddings.get(root1),
+                community_embeddings.get(root2),
+            )
+            if current_sim <= MERGE_THRESHOLD:
+                # 合并后向量已漂移，不再满足阈值，跳过
+                logger.debug(
+                    f"[Clustering] 跳过合并 {root1} ↔ {root2}，"
+                    f"当前相似度 {current_sim:.3f} ≤ {MERGE_THRESHOLD}"
+                )
+                continue
+
+            keep = root1 if community_sizes.get(root1, 0) >= community_sizes.get(root2, 0) else root2
+            dissolve = root2 if keep == root1 else root1
+            merged_into[dissolve] = keep
+
+            members = await self.repo.get_community_members(dissolve, end_user_id)
+            for m in members:
+                await self.repo.assign_entity_to_community(m["id"], keep, end_user_id)
+
+            # 合并后重新计算 keep 的平均向量（加权平均）
+            keep_emb = community_embeddings.get(keep)
+            dissolve_emb = community_embeddings.get(dissolve)
+            keep_size = community_sizes.get(keep, 0)
+            dissolve_size = community_sizes.get(dissolve, 0)
+            total_size = keep_size + dissolve_size
+            if keep_emb and dissolve_emb and total_size > 0:
+                dim = len(keep_emb)
+                community_embeddings[keep] = [
+                    (keep_emb[i] * keep_size + dissolve_emb[i] * dissolve_size) / total_size
+                    for i in range(dim)
+                ]
+            community_embeddings[dissolve] = None
+
+            community_sizes[keep] = total_size
+            community_sizes[dissolve] = 0
+            await self.repo.refresh_member_count(keep, end_user_id)
+            logger.info(
+                f"[Clustering] 社区合并: {dissolve} → {keep}，"
+                f"相似度={current_sim:.3f}，迁移 {len(members)} 个成员"
+            )
+
+    async def _flush_labels(
+        self, labels: Dict[str, str], end_user_id: str
+    ) -> None:
+        """将内存中的标签批量写入 Neo4j。"""
+        # 先创建所有唯一社区节点
+        unique_communities = set(labels.values())
+        for cid in unique_communities:
+            await self.repo.upsert_community(cid, end_user_id)
+
+        # 再批量分配实体
+        for entity_id, community_id in labels.items():
+            await self.repo.assign_entity_to_community(
+                entity_id, community_id, end_user_id
+            )
+
+        # 刷新成员数
+        for cid in unique_communities:
+            await self.repo.refresh_member_count(cid, end_user_id)
+
+    async def _get_entity_embedding(
+        self, entity_id: str, end_user_id: str
+    ) -> Optional[List[float]]:
+        """查询单个实体的 name_embedding。"""
+        try:
+            result = await self.connector.execute_query(
+                "MATCH (e:ExtractedEntity {id: $eid, end_user_id: $uid}) "
+                "RETURN e.name_embedding AS name_embedding",
+                eid=entity_id,
+                uid=end_user_id,
+            )
+            return result[0]["name_embedding"] if result else None
+        except Exception:
+            return None
+
+    async def _generate_community_metadata(
+        self, community_id: str, end_user_id: str
+    ) -> None:
+        """
+        为社区生成并写入元数据：名称、摘要、核心实体。
+
+        - core_entities：按 activation_value 排序取 top-N 实体名称列表（无需 LLM）
+        - name / summary：若有 llm_model_id 则调用 LLM 生成，否则用实体名称拼接兜底
+        """
+        try:
+            # 先检查属性是否已完整，完整则跳过，避免重复生成
+            check_embedding = bool(self.embedding_model_id)
+            if await self.repo.is_community_complete(community_id, end_user_id, check_embedding=check_embedding):
+                logger.debug(f"[Clustering] 社区 {community_id} 属性已完整，跳过生成")
+                return
+
+            members = await self.repo.get_community_members(community_id, end_user_id)
+            if not members:
+                return
+
+            # 核心实体：按 activation_value 降序取 top-N
+            sorted_members = sorted(
+                members,
+                key=lambda m: m.get("activation_value") or 0,
+                reverse=True,
+            )
+            core_entities = [m["name"] for m in sorted_members[:CORE_ENTITY_LIMIT] if m.get("name")]
+            all_names = [m["name"] for m in members if m.get("name")]
+
+            name = "、".join(core_entities[:3]) if core_entities else community_id[:8]
+            summary = f"包含实体：{', '.join(all_names)}"
+
+            # 若有 LLM 配置，调用 LLM 生成更好的名称和摘要
+            if self.llm_model_id:
+                try:
+                    from app.db import get_db_context
+                    from app.core.memory.utils.llm.llm_utils import MemoryClientFactory
+
+                    entity_list_str = "、".join(all_names)
+                    prompt = (
+                        f"以下是一组语义相关的实体：{entity_list_str}\n\n"
+                        f"请为这组实体所代表的主题：\n"
+                        f"1. 起一个简洁的中文名称（不超过10个字）\n"
+                        f"2. 写一句话摘要（不超过50个字）\n\n"
+                        f"严格按以下格式输出，不要有其他内容：\n"
+                        f"名称：<名称>\n摘要：<摘要>"
+                    )
+                    with get_db_context() as db:
+                        factory = MemoryClientFactory(db)
+                        llm_client = factory.get_llm_client(self.llm_model_id)
+                        response = await llm_client.chat([{"role": "user", "content": prompt}])
+                        text = response.content if hasattr(response, "content") else str(response)
+
+                    for line in text.strip().splitlines():
+                        if line.startswith("名称："):
+                            name = line[3:].strip()
+                        elif line.startswith("摘要："):
+                            summary = line[3:].strip()
+                except Exception as e:
+                    logger.warning(f"[Clustering] LLM 生成社区元数据失败，使用兜底值: {e}")
+
+            # 生成 summary_embedding
+            summary_embedding: Optional[List[float]] = None
+            if self.embedding_model_id and summary:
+                try:
+                    from app.db import get_db_context
+                    from app.core.memory.utils.llm.llm_utils import MemoryClientFactory
+
+                    with get_db_context() as db:
+                        embedder = MemoryClientFactory(db).get_embedder_client(self.embedding_model_id)
+                        vectors = await embedder.response([summary])
+                        if vectors:
+                            summary_embedding = vectors[0]
+                except Exception as e:
+                    logger.warning(f"[Clustering] 社区 {community_id} 生成 summary_embedding 失败: {e}")
+
+            await self.repo.update_community_metadata(
+                community_id=community_id,
+                end_user_id=end_user_id,
+                name=name,
+                summary=summary,
+                core_entities=core_entities,
+                summary_embedding=summary_embedding,
+            )
+            logger.debug(f"[Clustering] 社区 {community_id} 元数据已更新: name={name}")
+        except Exception as e:
+            logger.error(f"[Clustering] _generate_community_metadata failed for {community_id}: {e}")
+
+    @staticmethod
+    def _new_community_id() -> str:
+        return str(uuid.uuid4())

api/app/core/memory/storage_services/extraction_engine/knowledge_extraction/triplet_extraction.py

@@ -5,7 +5,7 @@ from typing import List, Dict, Optional
 from app.core.logging_config import get_memory_logger
 from app.core.memory.llm_tools.openai_client import OpenAIClient
 from app.core.memory.utils.prompt.prompt_utils import render_triplet_extraction_prompt
-from app.core.memory.utils.data.ontology import PREDICATE_DEFINITIONS, Predicate # 引入枚举 Predicate 白名单过滤
+from app.core.memory.utils.data.ontology import PREDICATE_DEFINITIONS, Predicate  # 引入枚举 Predicate 白名单过滤
 from app.core.memory.models.triplet_models import TripletExtractionResponse
 from app.core.memory.models.message_models import DialogData, Statement
 from app.core.memory.models.ontology_extraction_models import OntologyTypeList
@@ -14,15 +14,15 @@ from app.core.memory.utils.log.logging_utils import prompt_logger
 logger = get_memory_logger(__name__)
 
 
-
 class TripletExtractor:
     """Extracts knowledge triplets and entities from statements using LLM"""
 
     def __init__(
-        self,
-        llm_client: OpenAIClient,
-        ontology_types: Optional[OntologyTypeList] = None,
-        language: str = "zh"):
+            self,
+            llm_client: OpenAIClient,
+            ontology_types: Optional[OntologyTypeList] = None,
+            language: str = "zh"
+    ):
         """Initialize the TripletExtractor with an LLM client
 
         Args:
@@ -65,7 +65,8 @@ class TripletExtractor:
 
         # Create messages for LLM
         messages = [
-            {"role": "system", "content": "You are an expert at extracting knowledge triplets and entities from text. Follow the provided instructions carefully and return valid JSON."},
+            {"role": "system",
+             "content": "You are an expert at extracting knowledge triplets and entities from text. Follow the provided instructions carefully and return valid JSON."},
             {"role": "user", "content": prompt_content}
         ]
 
@@ -116,7 +117,8 @@ class TripletExtractor:
             logger.error(f"Error processing statement: {e}", exc_info=True)
             return TripletExtractionResponse(triplets=[], entities=[])
 
-    async def extract_triplets_from_statements(self, dialog_data: DialogData, limit_chunks: int = None) -> Dict[str, TripletExtractionResponse]:
+    async def extract_triplets_from_statements(self, dialog_data: DialogData, limit_chunks: int = None) -> Dict[
+        str, TripletExtractionResponse]:
         """Extract triplets and entities from statements
 
         Args:

api/app/core/memory/storage_services/reflection_engine/self_reflexion.py

@@ -1,11 +1,11 @@
 """
-自我反思引擎实现
+Self-Reflection Engine Implementation
 
-该模块实现了记忆系统的自我反思功能，包括：
-1. 基于时间的反思 - 根据时间周期触发反思
-2. 基于事实的反思 - 检测记忆冲突并解决
-3. 综合反思 - 整合多种反思策略
-4. 反思结果应用 - 更新记忆库
+This module implements the self-reflection functionality of the memory system, including:
+1. Time-based reflection - Triggers reflection based on time cycles
+2. Fact-based reflection - Detects and resolves memory conflicts
+3. Comprehensive reflection - Integrates multiple reflection strategies
+4. Reflection result application - Updates memory database
 """
 
 import asyncio
@@ -38,7 +38,7 @@ from app.schemas.memory_storage_schema import (
 )
 from pydantic import BaseModel
 
-# 配置日志
+# Configure logging
 _root_logger = logging.getLogger()
 if not _root_logger.handlers:
     logging.basicConfig(
@@ -49,35 +49,62 @@ else:
     _root_logger.setLevel(logging.INFO)
 
 class TranslationResponse(BaseModel):
-    """翻译响应模型"""
+    """Translation response model for language conversion"""
     data: str
+    
 class ReflectionRange(str, Enum):
-    """反思范围枚举"""
-    PARTIAL = "partial"  # 从检索结果中反思
-    ALL = "all"  # 从整个数据库中反思
+    """
+    Reflection range enumeration
+    
+    Defines the scope of data to be included in reflection operations.
+    """
+    PARTIAL = "partial"  # Reflect from retrieval results
+    ALL = "all"  # Reflect from entire database
 
 
 class ReflectionBaseline(str, Enum):
-    """反思基线枚举"""
-    TIME = "TIME"  # 基于时间的反思
-    FACT = "FACT"  # 基于事实的反思
-    HYBRID = "HYBRID"  # 混合反思
+    """
+    Reflection baseline enumeration
+    
+    Defines the strategy or approach used for reflection operations.
+    """
+    TIME = "TIME"  # Time-based reflection
+    FACT = "FACT"  # Fact-based reflection
+    HYBRID = "HYBRID"  # Hybrid reflection combining multiple strategies
 
 
 class ReflectionConfig(BaseModel):
-    """反思引擎配置"""
+    """
+    Reflection engine configuration
+    
+    Defines all configuration parameters for the reflection engine including
+    operation modes, model settings, and evaluation criteria.
+    
+    Attributes:
+        enabled: Whether reflection engine is enabled
+        iteration_period: Reflection cycle period (e.g., "3" hours)
+        reflexion_range: Scope of reflection (PARTIAL or ALL)
+        baseline: Reflection strategy (TIME, FACT, or HYBRID)
+        model_id: LLM model identifier for reflection operations
+        end_user_id: User identifier for scoped operations
+        output_example: Example output format for guidance
+        memory_verify: Enable memory verification checks
+        quality_assessment: Enable quality assessment evaluation
+        violation_handling_strategy: Strategy for handling violations
+        language_type: Language type for output ("zh" or "en")
+    """
     enabled: bool = False
-    iteration_period: str = "3"  # 反思周期
+    iteration_period: str = "3"  # Reflection cycle period
     reflexion_range: ReflectionRange = ReflectionRange.PARTIAL
     baseline: ReflectionBaseline = ReflectionBaseline.TIME
-    model_id: Optional[str] = None  # 模型ID
+    model_id: Optional[str] = None  # Model ID
     end_user_id: Optional[str] = None
-    output_example: Optional[str] = None  # 输出示例
+    output_example: Optional[str] = None  # Output example
 
-    # 评估相关字段
-    memory_verify: bool = True  # 记忆验证
-    quality_assessment: bool = True  # 质量评估
-    violation_handling_strategy: str = "warn"  # 违规处理策略
+    # Evaluation related fields
+    memory_verify: bool = True  # Memory verification
+    quality_assessment: bool = True  # Quality assessment
+    violation_handling_strategy: str = "warn"  # Violation handling strategy
     language_type: str = "zh"
 
     class Config:
@@ -85,7 +112,21 @@ class ReflectionConfig(BaseModel):
 
 
 class ReflectionResult(BaseModel):
-    """反思结果"""
+    """
+    Reflection operation result
+    
+    Contains comprehensive information about the outcome of a reflection operation
+    including success status, metrics, and execution details.
+    
+    Attributes:
+        success: Whether the reflection operation succeeded
+        message: Descriptive message about the operation result
+        conflicts_found: Number of conflicts detected during reflection
+        conflicts_resolved: Number of conflicts successfully resolved
+        memories_updated: Number of memory entries updated in database
+        execution_time: Total time taken for the reflection operation
+        details: Additional details about the operation (optional)
+    """
     success: bool
     message: str
     conflicts_found: int = 0
@@ -97,9 +138,22 @@ class ReflectionResult(BaseModel):
 
 class ReflectionEngine:
     """
-    自我反思引擎
-
-    负责执行记忆系统的自我反思，包括冲突检测、冲突解决和记忆更新。
+    Self-Reflection Engine
+    
+    Responsible for executing memory system self-reflection operations including
+    conflict detection, conflict resolution, and memory updates. Supports multiple
+    reflection strategies and provides comprehensive result tracking.
+    
+    The engine can operate in different modes:
+    - Time-based: Reflects on memories within specific time periods
+    - Fact-based: Detects and resolves factual conflicts in memories
+    - Hybrid: Combines multiple reflection strategies
+    
+    Attributes:
+        config: Reflection engine configuration
+        neo4j_connector: Neo4j database connector
+        llm_client: Language model client for analysis
+        Various function handlers for data processing and prompt rendering
     """
 
     def __init__(
@@ -115,18 +169,21 @@ class ReflectionEngine:
             update_query: Optional[str] = None
     ):
         """
-        初始化反思引擎
+        Initialize reflection engine
+        
+        Sets up the reflection engine with configuration and optional dependencies.
+        Uses lazy initialization to avoid circular imports and optimize startup time.
 
         Args:
-            config: 反思引擎配置
-            neo4j_connector: Neo4j 连接器（可选）
-            llm_client: LLM 客户端（可选）
-            get_data_func: 获取数据的函数（可选）
-            render_evaluate_prompt_func: 渲染评估提示词的函数（可选）
-            render_reflexion_prompt_func: 渲染反思提示词的函数（可选）
-            conflict_schema: 冲突结果 Schema（可选）
-            reflexion_schema: 反思结果 Schema（可选）
-            update_query: 更新查询语句（可选）
+            config: Reflection engine configuration object
+            neo4j_connector: Neo4j connector instance (optional, will be created if not provided)
+            llm_client: LLM client instance (optional, will be created if not provided)
+            get_data_func: Function for retrieving data (optional, uses default if not provided)
+            render_evaluate_prompt_func: Function for rendering evaluation prompts (optional)
+            render_reflexion_prompt_func: Function for rendering reflection prompts (optional)
+            conflict_schema: Schema for conflict result validation (optional)
+            reflexion_schema: Schema for reflection result validation (optional)
+            update_query: Query string for database updates (optional)
         """
         self.config = config
         self.neo4j_connector = neo4j_connector
@@ -137,14 +194,20 @@ class ReflectionEngine:
         self.conflict_schema = conflict_schema
         self.reflexion_schema = reflexion_schema
         self.update_query = update_query
-        self._semaphore = asyncio.Semaphore(5)  # 默认并发数为5
+        self._semaphore = asyncio.Semaphore(5)  # Default concurrency limit of 5
 
 
-        # 延迟导入以避免循环依赖
+        # Lazy import to avoid circular dependencies
         self._lazy_init_done = False
 
     def _lazy_init(self):
-        """延迟初始化，避免循环导入"""
+        """
+        Lazy initialization to avoid circular imports
+        
+        Initializes dependencies only when needed, preventing circular import issues
+        and optimizing startup performance. Sets up default implementations for
+        any components not provided during construction.
+        """
         if self._lazy_init_done:
             return
 
@@ -158,7 +221,7 @@ class ReflectionEngine:
                 factory = MemoryClientFactory(db)
                 self.llm_client = factory.get_llm_client(self.config.model_id)
         elif isinstance(self.llm_client, str):
-            # 如果 llm_client 是字符串（model_id），则用它初始化客户端
+            # If llm_client is a string (model_id), use it to initialize the client
             from app.core.memory.utils.llm.llm_utils import MemoryClientFactory
             from app.db import get_db_context
             from app.services.memory_config_service import MemoryConfigService
@@ -172,10 +235,10 @@ class ReflectionEngine:
                 model_config = config_service.get_model_config(model_id)
                 
             extra_params={
-                    "temperature": 0.2,  # 降低温度提高响应速度和一致性
-                    "max_tokens": 600,  # 限制最大token数
-                    "top_p": 0.8,  # 优化采样参数
-                    "stream": False,  # 确保非流式输出以获得最快响应
+                    "temperature": 0.2,  # Lower temperature for faster response and consistency
+                    "max_tokens": 600,  # Limit maximum token count
+                    "top_p": 0.8,  # Optimize sampling parameters
+                    "stream": False,  # Ensure non-streaming output for fastest response
                 }
 
             self.llm_client  = OpenAIClient(RedBearModelConfig(
@@ -191,7 +254,7 @@ class ReflectionEngine:
         if self.get_data_func is None:
             self.get_data_func = get_data
 
-        # 导入get_data_statement函数
+        # Import get_data_statement function
         if not hasattr(self, 'get_data_statement'):
             self.get_data_statement = get_data_statement
 
@@ -223,13 +286,20 @@ class ReflectionEngine:
 
     async def execute_reflection(self, host_id) -> ReflectionResult:
         """
-        执行完整的反思流程
+        Execute complete reflection workflow
+        
+        Performs the full reflection process including data retrieval, conflict detection,
+        conflict resolution, and memory updates. This is the main entry point for
+        reflection operations.
+        
         Args:
-            host_id: 主机ID
+            host_id: Host identifier for scoping reflection operations
+            
         Returns:
-            ReflectionResult: 反思结果
+            ReflectionResult: Comprehensive result of the reflection operation including
+                            success status, conflict metrics, and execution time
         """
-        # 延迟初始化
+        # Lazy initialization
         self._lazy_init()
 
         if not self.config.enabled:
@@ -243,7 +313,7 @@ class ReflectionEngine:
 
         print(self.config.baseline, self.config.memory_verify, self.config.quality_assessment)
         try:
-            # 1. 获取反思数据
+            # 1. Get reflection data
             reflexion_data, statement_databasets = await self._get_reflexion_data(host_id)
             if not reflexion_data:
                 return ReflectionResult(
@@ -252,7 +322,7 @@ class ReflectionEngine:
                     execution_time=asyncio.get_event_loop().time() - start_time
                 )
 
-            # 2. 检测冲突（基于事实的反思）
+            # 2. Detect conflicts (fact-based reflection)
             conflict_data = await self._detect_conflicts(reflexion_data, statement_databasets)
             conflict_list=[]
             for i  in conflict_data:
@@ -261,7 +331,7 @@ class ReflectionEngine:
 
 
             conflicts_found=0
-            # 3. 解决冲突
+            # 3. Resolve conflicts
             solved_data = await self._resolve_conflicts(conflict_list, statement_databasets)
 
             if not solved_data:
@@ -276,7 +346,7 @@ class ReflectionEngine:
             logging.info(f"解决了 {conflicts_resolved} 个冲突")
 
 
-            # 4. 应用反思结果（更新记忆库）
+            # 4. Apply reflection results (update memory database)
             memories_updated=await self._apply_reflection_results(solved_data)
 
             execution_time = asyncio.get_event_loop().time() - start_time
@@ -302,7 +372,19 @@ class ReflectionEngine:
             )
 
     async def Translate(self, text):
-        # 翻译中文为英文
+        """
+        Translate Chinese text to English
+        
+        Uses the configured LLM to translate Chinese text to English with structured output.
+        Provides consistent translation format for reflection results.
+        
+        Args:
+            text: Chinese text to be translated
+            
+        Returns:
+            str: Translated English text
+        """
+        # Translate Chinese to English
         translation_messages = [
             {
                 "role": "user",
@@ -316,6 +398,19 @@ class ReflectionEngine:
         )
         return response.data
     async def extract_translation(self,data):
+        """
+        Extract and translate reflection data to English
+        
+        Processes reflection data structure and translates all Chinese content to English.
+        Handles nested data structures including memory verifications, quality assessments,
+        and reflection data while preserving the original structure.
+        
+        Args:
+            data: Dictionary containing reflection data with Chinese content
+            
+        Returns:
+            dict: Translated data structure with English content
+        """
         end_datas={}
         end_datas['source_data']=await self.Translate(data['source_data'])
         quality_assessments = []
@@ -350,6 +445,18 @@ class ReflectionEngine:
         return end_datas
 
     async def reflection_run(self):
+        """
+        Execute reflection workflow with comprehensive data processing
+        
+        Performs a complete reflection operation including conflict detection, resolution,
+        and result formatting. Supports both Chinese and English output based on
+        configuration settings.
+        
+        Returns:
+            dict: Comprehensive reflection results including source data, memory verifications,
+                 quality assessments, and reflection data. Results are translated to English
+                 if language_type is set to 'en'.
+        """
         self._lazy_init()
         start_time = time.time()
         memory_verifies_flag = self.config.memory_verify
@@ -367,7 +474,7 @@ class ReflectionEngine:
         result_data['source_data'] = "我是 2023 年春天去北京工作的，后来基本一直都在北京上班，也没怎么换过城市。不过后来公司调整，2024 年上半年我被调到上海待了差不多半年，那段时间每天都是在上海办公室打卡。当时入职资料用的还是我之前的身份信息，身份证号是 11010119950308123X，银行卡是 6222023847595898，这些一直没变。对了，其实我 从 2023 年开始就一直在北京生活，从来没有长期离开过北京，上海那段更多算是远程配合"
         # 2. 检测冲突（基于事实的反思）
         conflict_data = await self._detect_conflicts(databasets, source_data)
-        # 遍历数据提取字段
+        # Traverse data to extract fields
         quality_assessments = []
         memory_verifies = []
         for item in conflict_data:
@@ -375,9 +482,9 @@ class ReflectionEngine:
             memory_verifies.append(item['memory_verify'])
         result_data['memory_verifies'] = memory_verifies
         result_data['quality_assessments'] = quality_assessments
-        conflicts_found = 0  # 初始化为整数0而不是空字符串
+        conflicts_found = 0  # Initialize as integer 0 instead of empty string
         REMOVE_KEYS = {"created_at", "expired_at","relationship","predicate","statement_id","id","statement_id","relationship_statement_id"}
-        # Clearn conflict_data，And memory_verify和quality_assessment
+        # Clean conflict_data, and memory_verify and quality_assessment
         cleaned_conflict_data = []
         for item in conflict_data:
             cleaned_item = {
@@ -389,7 +496,7 @@ class ReflectionEngine:
         for item in conflict_data:
             cleaned_data = []
             for row in item.get("data", []):
-                # 删除 created_at / expired_at
+                # Remove created_at / expired_at
                 cleaned_row = {
                     k: v
                     for k, v in row.items()
@@ -402,7 +509,7 @@ class ReflectionEngine:
             }
             cleaned_conflict_data_.append(cleaned_item)
         print(cleaned_conflict_data_)
-        # 3. 解决冲突
+        # 3. Resolve conflicts
         solved_data = await self._resolve_conflicts(cleaned_conflict_data_, source_data)
         if not solved_data:
             return ReflectionResult(
@@ -413,7 +520,7 @@ class ReflectionEngine:
             )
         reflexion_data = []
 
-        # 遍历数据提取reflexion字段
+        # Traverse data to extract reflexion fields
         for item in solved_data:
             if 'results' in item:
                 for result in item['results']:
@@ -431,15 +538,24 @@ class ReflectionEngine:
 
 
     async def extract_fields_from_json(self):
-        """从example.json中提取source_data和databasets字段"""
+        """
+        Extract source_data and databasets fields from example.json
+        
+        Reads reflection example data from the example.json file and extracts
+        the source data and database statements for testing and demonstration purposes.
+        
+        Returns:
+            tuple: (source_data, databasets) extracted from the example file
+                  Returns empty lists if file reading fails
+        """
 
         prompt_dir = os.path.join(os.path.dirname(__file__), "example")
         try:
-            # 读取JSON文件
+            # Read JSON file
             with open(prompt_dir + '/example.json', 'r', encoding='utf-8') as f:
                 data = json.loads(f.read())
 
-            # 提取memory_verify下的字段
+            # Extract fields under memory_verify
             memory_verify = data.get("memory_verify", {})
             source_data = memory_verify.get("source_data", [])
             databasets = memory_verify.get("databasets", [])
@@ -451,15 +567,17 @@ class ReflectionEngine:
 
     async def _get_reflexion_data(self, host_id: uuid.UUID) -> List[Any]:
         """
-        获取反思数据
-
-        根据配置的反思范围获取需要反思的记忆数据。
+        Get reflection data from database
+        
+        Retrieves memory data for reflection based on the configured reflection range.
+        Supports both partial (from retrieval results) and full (entire database) modes.
 
         Args:
-            host_id: 主机ID
+            host_id: Host UUID identifier for scoping data retrieval
 
         Returns:
-            List[Any]: 反思数据列表
+            tuple: (reflexion_data, statement_data) containing memory data for reflection
+                  Returns empty lists if query fails
         """
 
         print("=== 获取反思数据 ===")
@@ -484,26 +602,29 @@ class ReflectionEngine:
 
     async def _detect_conflicts(self, data: List[Any], statement_databasets: List[Any]) -> List[Any]:
         """
-        检测冲突（基于事实的反思）
-
-        使用 LLM 分析记忆数据，检测其中的冲突。
+        Detect conflicts (fact-based reflection)
+        
+        Uses LLM to analyze memory data and detect conflicts within the memories.
+        Performs comprehensive conflict detection including memory verification and
+        quality assessment based on configuration settings.
 
         Args:
-            data: 待检测的记忆数据
+            data: Memory data to be analyzed for conflicts
+            statement_databasets: Statement database records for context
 
         Returns:
-            List[Any]: 冲突记忆列表
+            List[Any]: List of detected conflicts with detailed analysis
         """
         if not data:
             return []
 
-        # 数据预处理：如果数据量太少，直接返回无冲突
+        # Data preprocessing: if data is too small, return no conflicts directly
         if len(data) < 2:
             logging.info("数据量不足，无需检测冲突")
             return []
 
-        # 使用转换后的数据
-        # print("转换后的数据:", data[:2] if len(data) > 2 else data)  # 只打印前2条避免日志过长
+        # Use converted data
+        # print("Converted data:", data[:2] if len(data) > 2 else data)  # Only print first 2 to avoid long logs
         memory_verify = self.config.memory_verify
 
         logging.info("====== 冲突检测开始 ======")
@@ -512,7 +633,7 @@ class ReflectionEngine:
         language_type=self.config.language_type
 
         try:
-            # 渲染冲突检测提示词
+            # Render conflict detection prompt
             rendered_prompt = await self.render_evaluate_prompt_func(
                 data,
                 self.conflict_schema,
@@ -526,7 +647,7 @@ class ReflectionEngine:
             messages = [{"role": "user", "content": rendered_prompt}]
             logging.info(f"提示词长度: {len(rendered_prompt)}")
 
-            # 调用 LLM 进行冲突检测
+            # Call LLM for conflict detection
             response = await self.llm_client.response_structured(
                 messages,
                 self.conflict_schema
@@ -539,7 +660,7 @@ class ReflectionEngine:
                 logging.error("LLM 冲突检测输出解析失败")
                 return []
 
-            # 标准化返回格式
+            # Standardize return format
             if isinstance(response, BaseModel):
                 return [response.model_dump()]
             elif hasattr(response, 'dict'):
@@ -553,15 +674,17 @@ class ReflectionEngine:
 
     async def _resolve_conflicts(self, conflicts: List[Any], statement_databasets: List[Any]) -> List[Any]:
         """
-        解决冲突
-
-        使用 LLM 对检测到的冲突进行反思和解决。
+        Resolve detected conflicts
+        
+        Uses LLM to perform reflection and resolution on detected conflicts.
+        Processes conflicts in parallel for efficiency while respecting concurrency limits.
 
         Args:
-            conflicts: 冲突列表
+            conflicts: List of conflicts to be resolved
+            statement_databasets: Statement database records for context
 
         Returns:
-            List[Any]: 解决方案列表
+            List[Any]: List of resolution solutions with reflection results
         """
         if not conflicts:
             return []
@@ -570,12 +693,12 @@ class ReflectionEngine:
         baseline = self.config.baseline
         memory_verify = self.config.memory_verify
 
-        # 并行处理每个冲突
+        # Process each conflict in parallel
         async def _resolve_one(conflict: Any) -> Optional[Dict[str, Any]]:
-            """解决单个冲突"""
+            """Resolve a single conflict"""
             async with self._semaphore:
                 try:
-                    # 渲染反思提示词
+                    # Render reflection prompt
                     rendered_prompt = await self.render_reflexion_prompt_func(
                         [conflict],
                         self.reflexion_schema,
@@ -587,7 +710,7 @@ class ReflectionEngine:
 
                     messages = [{"role": "user", "content": rendered_prompt}]
 
-                    # 调用 LLM 进行反思
+                    # Call LLM for reflection
                     response = await self.llm_client.response_structured(
                         messages,
                         self.reflexion_schema
@@ -596,7 +719,7 @@ class ReflectionEngine:
                     if not response:
                         return None
 
-                    # 标准化返回格式
+                    # Standardize return format
                     if isinstance(response, BaseModel):
                         return response.model_dump()
                     elif hasattr(response, 'dict'):
@@ -610,11 +733,11 @@ class ReflectionEngine:
                     logging.warning(f"解决单个冲突失败: {e}")
                     return None
 
-        # 并发执行所有冲突解决任务
+        # Execute all conflict resolution tasks concurrently
         tasks = [_resolve_one(conflict) for conflict in conflicts]
         results = await asyncio.gather(*tasks, return_exceptions=False)
 
-        # 过滤掉失败的结果
+        # Filter out failed results
         solved = [r for r in results if r is not None]
 
         logging.info(f"成功解决 {len(solved)}/{len(conflicts)} 个冲突")
@@ -626,15 +749,16 @@ class ReflectionEngine:
             solved_data: List[Dict[str, Any]]
     ) -> int:
         """
-        应用反思结果（更新记忆库）
-
-        将解决冲突后的记忆更新到 Neo4j 数据库中。
+        Apply reflection results (update memory database)
+        
+        Updates the Neo4j database with resolved conflicts and reflection results.
+        Processes the solved data and applies changes to the memory storage system.
 
         Args:
-            solved_data: 解决方案列表
+            solved_data: List of resolved conflict solutions with reflection data
 
         Returns:
-            int: 成功更新的记忆数量
+            int: Number of successfully updated memory entries
         """
         changes = extract_and_process_changes(solved_data)
         success_count = await neo4j_data(changes)
@@ -642,80 +766,86 @@ class ReflectionEngine:
 
 
 
-    # 基于时间的反思方法
+    # Time-based reflection methods
     async def time_based_reflection(
             self,
             host_id: uuid.UUID,
             time_period: Optional[str] = None
     ) -> ReflectionResult:
         """
-        基于时间的反思
-
-        根据时间周期触发反思，检查在指定时间段内的记忆。
+        Time-based reflection
+        
+        Triggers reflection based on time cycles, checking memories within
+        specified time periods. Uses the configured iteration period if
+        no specific time period is provided.
 
         Args:
-            host_id: 主机ID
-            time_period: 时间周期（如"三小时"），如果不提供则使用配置中的值
+            host_id: Host UUID identifier for scoping reflection
+            time_period: Time period (e.g., "three hours"), uses config value if not provided
 
         Returns:
-            ReflectionResult: 反思结果
+            ReflectionResult: Comprehensive reflection operation result
         """
         period = time_period or self.config.iteration_period
         logging.info(f"执行基于时间的反思，周期: {period}")
 
-        # 使用标准反思流程
+        # Use standard reflection workflow
         return await self.execute_reflection(host_id)
 
-    # 基于事实的反思方法
+    # Fact-based reflection methods
     async def fact_based_reflection(
             self,
             host_id: uuid.UUID
     ) -> ReflectionResult:
         """
-        基于事实的反思
-
-        检测记忆中的事实冲突并解决。
+        Fact-based reflection
+        
+        Detects and resolves factual conflicts within memories. Analyzes
+        memory data for inconsistencies and contradictions that need resolution.
 
         Args:
-            host_id: 主机ID
+            host_id: Host UUID identifier for scoping reflection
 
         Returns:
-            ReflectionResult: 反思结果
+            ReflectionResult: Comprehensive reflection operation result
         """
         logging.info("执行基于事实的反思")
 
-        # 使用标准反思流程
+        # Use standard reflection workflow
         return await self.execute_reflection(host_id)
 
-    # 综合反思方法
+    # Comprehensive reflection methods
     async def comprehensive_reflection(
             self,
             host_id: uuid.UUID
     ) -> ReflectionResult:
         """
-        综合反思
-
-        整合基于时间和基于事实的反思策略。
+        Comprehensive reflection
+        
+        Integrates time-based and fact-based reflection strategies based on
+        the configured baseline. Supports hybrid approaches that combine
+        multiple reflection methodologies.
 
         Args:
-            host_id: 主机ID
+            host_id: Host UUID identifier for scoping reflection
 
         Returns:
-            ReflectionResult: 反思结果
+            ReflectionResult: Comprehensive reflection operation result combining
+                            multiple strategies if using hybrid baseline
         """
         logging.info("执行综合反思")
 
-        # 根据配置的基线选择反思策略
+        # Choose reflection strategy based on configured baseline
         if self.config.baseline == ReflectionBaseline.TIME:
             return await self.time_based_reflection(host_id)
         elif self.config.baseline == ReflectionBaseline.FACT:
             return await self.fact_based_reflection(host_id)
         elif self.config.baseline == ReflectionBaseline.HYBRID:
-            # 混合策略：先执行基于时间的反思，再执行基于事实的反思
+            # Hybrid strategy: execute time-based reflection first, then fact-based reflection
             time_result = await self.time_based_reflection(host_id)
             fact_result = await self.fact_based_reflection(host_id)
 
-            # 合并结果
+            # Merge results
             return ReflectionResult(
                 success=time_result.success and fact_result.success,
                 message=f"时间反思: {time_result.message}; 事实反思: {fact_result.message}",

api/app/core/memory/utils/data/text_utils.py

@@ -2,9 +2,17 @@ import json
 
 
 def escape_lucene_query(query: str) -> str:
-    """Escape Lucene special characters in a free-text query.
-
-    This prevents ParseException when using Neo4j full-text procedures.
+    """
+    Escape special characters in Lucene queries
+    
+    Prevents ParseException when using Neo4j full-text search procedures.
+    Escapes all Lucene reserved special characters and operators.
+    
+    Args:
+        query: Original query string
+        
+    Returns:
+        str: Escaped query string safe for Lucene search
     """
     if query is None:
         return ""
@@ -22,11 +30,21 @@ def escape_lucene_query(query: str) -> str:
     return s
 
 def extract_plain_query(query_input: str) -> str:
-    """Extract clean, plain-text query from various input forms.
-
+    """
+    Extract clean plain-text query from various input forms
+    
+    Handles the following cases:
     - Strips surrounding quotes and whitespace
     - If input looks like JSON, prefers the 'original' field
-    - Fallbacks to the raw string when parsing fails
+    - Falls back to raw string when parsing fails
+    - Handles dictionary-type input
+    - Best-effort unescape common escape characters
+    
+    Args:
+        query_input: Query input in various forms (string, dict, etc.)
+        
+    Returns:
+        str: Extracted plain-text query string
     """
     if query_input is None:
         return ""

api/app/core/memory/utils/data/time_utils.py

@@ -4,7 +4,13 @@ from datetime import datetime
 
 def validate_date_format(date_str: str) -> bool:
     """
-    Validate if the date string is in the format YYYY-MM-DD.
+    Validate if date string conforms to YYYY-MM-DD format
+    
+    Args:
+        date_str: Date string to validate
+        
+    Returns:
+        bool: True if format is correct, False otherwise
     """
     pattern = r"^\d{4}-\d{1,2}-\d{1,2}$"
     return bool(re.match(pattern, date_str))
@@ -41,7 +47,20 @@ def normalize_date(date_str: str) -> str:
 
 
 def preprocess_date_string(date_str: str) -> str:
-    """预处理日期字符串，处理特殊格式"""
+    """
+    预处理日期字符串，处理特殊格式
+    
+    处理以下特殊格式：
+    - 年份后直接跟月份没有分隔符的格式（如 "20259/28"）
+    - 无分隔符的纯数字格式（如 "20251028", "251028"）
+    - 混合分隔符，统一为 "-"
+    
+    Args:
+        date_str: 原始日期字符串
+        
+    Returns:
+        str: 预处理后的日期字符串，格式为 "YYYY-MM-DD" 或 "YYYY-MM"
+    """
 
     # 处理类似 "20259/28" 的格式（年份后直接跟月份没有分隔）
     match = re.match(r'^(\d{4,5})[/\.\-_]?(\d{1,2})[/\.\-_]?(\d{1,2})$', date_str)
@@ -78,7 +97,23 @@ def preprocess_date_string(date_str: str) -> str:
 
 
 def fallback_parse(date_str: str) -> str:
-    """备选解析方案"""
+    """
+    备选日期解析方案
+    
+    当智能解析失败时，尝试使用预定义的日期格式进行解析。
+    支持多种常见的日期格式，包括：
+    - YYYY-MM-DD, YYYY/MM/DD, YYYY.MM.DD
+    - YYYYMMDD, YYMMDD
+    - MM-DD-YYYY, MM/DD/YYYY, MM.DD.YYYY
+    - DD-MM-YYYY, DD/MM/YYYY, DD.MM.YYYY
+    - YYYY-MM, YYYY/MM, YYYY.MM
+    
+    Args:
+        date_str: 待解析的日期字符串
+        
+    Returns:
+        str: 标准化后的日期字符串（YYYY-MM-DD格式），解析失败时返回原字符串
+    """
 
     # 尝试常见的日期格式[citation:4][citation:5]
     formats_to_try = [

api/app/core/memory/utils/prompt/template_render.py

@@ -2,15 +2,15 @@ import os
 from jinja2 import Environment, FileSystemLoader
 from typing import List, Dict, Any
 
-
 # Setup Jinja2 environment
 prompt_dir = os.path.join(os.path.dirname(__file__), "prompts")
 prompt_env = Environment(loader=FileSystemLoader(prompt_dir))
 
+
 async def render_evaluate_prompt(evaluate_data: List[Any], schema: Any,
                                  baseline: str = "TIME",
-                                 memory_verify: bool = False,quality_assessment:bool = False,
-                                 statement_databasets: List[str] = [],language_type:str = "zh") -> str:
+                                 memory_verify: bool = False, quality_assessment: bool = False,
+                                 statement_databasets=None, language_type: str = "zh") -> str:
     """
     Renders the evaluate prompt using the evaluate_optimized.jinja2 template.
 
@@ -23,6 +23,8 @@ async def render_evaluate_prompt(evaluate_data: List[Any], schema: Any,
     Returns:
         Rendered prompt content as string
     """
+    if statement_databasets is None:
+        statement_databasets = []
     template = prompt_env.get_template("evaluate.jinja2")
 
     # Convert Pydantic model to JSON schema if needed
@@ -46,7 +48,7 @@ async def render_evaluate_prompt(evaluate_data: List[Any], schema: Any,
 
 
 async def render_reflexion_prompt(data: Dict[str, Any], schema: Any, baseline: str, memory_verify: bool = False,
-                                  statement_databasets: List[str] = [],language_type:str = "zh") -> str:
+                                  statement_databasets=None, language_type: str = "zh") -> str:
     """
     Renders the reflexion prompt using the reflexion_optimized.jinja2 template.
 
@@ -58,6 +60,8 @@ async def render_reflexion_prompt(data: Dict[str, Any], schema: Any, baseline: s
     Returns:
         Rendered prompt content as a string.
     """
+    if statement_databasets is None:
+        statement_databasets = []
     template = prompt_env.get_template("reflexion.jinja2")
 
     # Convert Pydantic model to JSON schema if needed
@@ -69,7 +73,7 @@ async def render_reflexion_prompt(data: Dict[str, Any], schema: Any, baseline: s
         json_schema = schema
 
     rendered_prompt = template.render(data=data, json_schema=json_schema,
-                                      baseline=baseline,memory_verify=memory_verify,
-                                      statement_databasets=statement_databasets,language_type=language_type)
+                                      baseline=baseline, memory_verify=memory_verify,
+                                      statement_databasets=statement_databasets, language_type=language_type)
 
     return rendered_prompt

api/app/core/models/base.py

@@ -1,23 +1,19 @@
 from __future__ import annotations
 
-import asyncio
 import os
-import time
-from abc import ABC, abstractmethod
-from typing import Any, Callable, Dict, List, Optional, TypeVar
+from typing import Any, Dict, Optional, TypeVar
+
+from langchain_aws import ChatBedrock
+from langchain_community.chat_models import ChatTongyi
+from langchain_core.embeddings import Embeddings
+from langchain_core.language_models import BaseLLM
+from langchain_ollama import OllamaLLM
+from langchain_openai import ChatOpenAI, OpenAI
+from pydantic import BaseModel, Field
 
-import httpx
 from app.core.error_codes import BizCode
 from app.core.exceptions import BusinessException
 from app.models.models_model import ModelProvider, ModelType
-from langchain_community.document_compressors import JinaRerank
-from langchain_core.callbacks import CallbackManagerForLLMRun
-from langchain_core.embeddings import Embeddings
-from langchain_core.language_models import BaseLanguageModel, BaseLLM
-from langchain_core.outputs import Generation, LLMResult
-from langchain_core.retrievers import BaseRetriever
-from langchain_core.runnables import RunnableSerializable
-from pydantic import BaseModel, Field
 
 T = TypeVar("T")
 
@@ -163,25 +159,17 @@ def get_provider_llm_class(config: RedBearModelConfig, type: ModelType = ModelTy
 
     # dashscope 的 omni 模型使用 OpenAI 兼容模式
     if provider == ModelProvider.DASHSCOPE and config.is_omni:
-        from langchain_openai import ChatOpenAI
         return ChatOpenAI
-
-    if provider in [ModelProvider.OPENAI, ModelProvider.XINFERENCE, ModelProvider.GPUSTACK] :
+    if provider in [ModelProvider.OPENAI, ModelProvider.XINFERENCE, ModelProvider.GPUSTACK]:
         if type == ModelType.LLM:
-            from langchain_openai import OpenAI
             return OpenAI
         elif type == ModelType.CHAT:
-            from langchain_openai import ChatOpenAI
             return ChatOpenAI
     elif provider == ModelProvider.DASHSCOPE:
-        from langchain_community.chat_models import ChatTongyi
         return ChatTongyi
     elif provider == ModelProvider.OLLAMA:
-        from langchain_ollama import OllamaLLM
         return OllamaLLM
     elif provider == ModelProvider.BEDROCK:
-        from langchain_aws import ChatBedrock, ChatBedrockConverse
-
         return ChatBedrock
     else:
         raise BusinessException(f"不支持的模型提供商: {provider}", code=BizCode.PROVIDER_NOT_SUPPORTED)

api/app/core/rag/nlp/search.py

@@ -94,72 +94,16 @@ def knowledge_retrieval(
                 db_knowledge = knowledge_repository.get_knowledge_by_id(db, knowledge_id=kb_id)
                 if db_knowledge and db_knowledge.chunk_num > 0 and db_knowledge.status == 1:
                     # Process shared knowledge base
-                    if db_knowledge.permission_id.lower() == knowledge_model.PermissionType.Share:
-                        knowledgeshare = knowledgeshare_repository.get_knowledgeshare_by_id(db=db,
-                                                                                            knowledgeshare_id=db_knowledge.id)
-                        if knowledgeshare:
-                            db_knowledge = knowledge_repository.get_knowledge_by_id(db,
-                                                                                    knowledge_id=knowledgeshare.source_kb_id)
-                            if not (db_knowledge and db_knowledge.chunk_num > 0 and db_knowledge.status == 1):
-                                continue
-                        else:
-                            continue
-
-                    if str(db_knowledge.id) not in kb_ids:
-                        kb_ids.append(str(db_knowledge.id))
-                    if str(db_knowledge.workspace_id) not in workspace_ids:
-                        workspace_ids.append(str(db_knowledge.workspace_id))
-                    if not chat_model:
-                        chat_model = Base(
-                            key=db_knowledge.llm.api_keys[0].api_key,
-                            model_name=db_knowledge.llm.api_keys[0].model_name,
-                            base_url=db_knowledge.llm.api_keys[0].api_base
-                        )
-                    if not embedding_model:
-                        embedding_model = OpenAIEmbed(
-                            key=db_knowledge.embedding.api_keys[0].api_key,
-                            model_name=db_knowledge.embedding.api_keys[0].model_name,
-                            base_url=db_knowledge.embedding.api_keys[0].api_base
-                        )
-                    vector_service = ElasticSearchVectorFactory().init_vector(knowledge=db_knowledge)
-                    # Retrieve according to the configured retrieval type
-                    match kb_config["retrieve_type"]:
-                        case "participle":
-                            rs = vector_service.search_by_full_text(
-                                query=query,
-                                top_k=kb_config["top_k"],
-                                score_threshold=kb_config["similarity_threshold"],
-                                file_names_filter=file_names_filter
-                            )
-                        case "semantic":
-                            rs = vector_service.search_by_vector(
-                                query=query,
-                                top_k=kb_config["top_k"],
-                                score_threshold=kb_config["vector_similarity_weight"],
-                                file_names_filter=file_names_filter
-                            )
-                        case _:  # hybrid
-                            rs1 = vector_service.search_by_vector(
-                                query=query,
-                                top_k=kb_config["top_k"],
-                                score_threshold=kb_config["vector_similarity_weight"],
-                                file_names_filter=file_names_filter
-                            )
-                            rs2 = vector_service.search_by_full_text(
-                                query=query,
-                                top_k=kb_config["top_k"],
-                                score_threshold=kb_config["similarity_threshold"],
-                                file_names_filter=file_names_filter
-                            )
-
-                            # Deduplication of merge results
-                            seen_ids = set()
-                            unique_rs = []
-                            for doc in rs1 + rs2:
-                                if doc.metadata["doc_id"] not in seen_ids:
-                                    seen_ids.add(doc.metadata["doc_id"])
-                                    unique_rs.append(doc)
-                            rs = unique_rs
+                    rs, chat_model, embedding_model = _retrieve_for_knowledge(
+                        db=db,
+                        db_knowledge=db_knowledge,
+                        kb_config={**kb_config, "query": query},  # 或改为单独参数
+                        file_names_filter=file_names_filter,
+                        chat_model=chat_model,
+                        embedding_model=embedding_model,
+                        kb_ids=kb_ids,
+                        workspace_ids=workspace_ids,
+                    )
 
                     all_results.extend(rs)
             except Exception as e:
@@ -199,6 +143,115 @@ def knowledge_retrieval(
     finally:
         db.close()
 
+def _retrieve_for_knowledge(
+    db: Session,
+    db_knowledge,
+    kb_config: Dict[str, Any],
+    file_names_filter: list[str],
+    chat_model: Base | None,
+    embedding_model: OpenAIEmbed | None,
+    kb_ids: list[str],
+    workspace_ids: list[str],
+) -> tuple[list[DocumentChunk], Base | None, OpenAIEmbed | None]:
+    """
+    对单个知识库进行检索。
+    - 处理共享知识库
+    - 如果是 Folder，则递归检索其子知识库
+    - 返回本知识库(含子库)的检索结果和可能更新后的 chat_model/embedding_model
+    """
+    results: list[DocumentChunk] = []
+
+    # 处理共享知识库
+    if db_knowledge.permission_id.lower() == knowledge_model.PermissionType.Share:
+        knowledgeshare = knowledgeshare_repository.get_knowledgeshare_by_id(db=db, knowledgeshare_id=db_knowledge.id)
+        if not knowledgeshare:
+            return results, chat_model, embedding_model
+
+        db_knowledge = knowledge_repository.get_knowledge_by_id(db, knowledge_id=knowledgeshare.source_kb_id)
+        if not (db_knowledge and db_knowledge.chunk_num > 0 and db_knowledge.status == 1):
+            return results, chat_model, embedding_model
+
+    # Folder 类型：递归处理子知识库
+    if db_knowledge.type == knowledge_model.KnowledgeType.FOLDER:
+        children = knowledge_repository.get_knowledges_by_parent_id(db=db, parent_id=db_knowledge.id)
+        for child in children:
+            if not (child and child.chunk_num > 0 and child.status == 1):
+                continue
+            # 递归处理子知识库（子库如果还是 Folder，会继续往下）
+            child_results, chat_model, embedding_model = _retrieve_for_knowledge(
+                db=db,
+                db_knowledge=child,
+                kb_config=kb_config,
+                file_names_filter=file_names_filter,
+                chat_model=chat_model,
+                embedding_model=embedding_model,
+                kb_ids=kb_ids,
+                workspace_ids=workspace_ids,
+            )
+            results.extend(child_results)
+        return results, chat_model, embedding_model
+
+    # 普通知识库，执行一次检索
+    if str(db_knowledge.id) not in kb_ids:
+        kb_ids.append(str(db_knowledge.id))
+    if str(db_knowledge.workspace_id) not in workspace_ids:
+        workspace_ids.append(str(db_knowledge.workspace_id))
+
+    if not chat_model:
+        chat_model = Base(
+            key=db_knowledge.llm.api_keys[0].api_key,
+            model_name=db_knowledge.llm.api_keys[0].model_name,
+            base_url=db_knowledge.llm.api_keys[0].api_base,
+        )
+    if not embedding_model:
+        embedding_model = OpenAIEmbed(
+            key=db_knowledge.embedding.api_keys[0].api_key,
+            model_name=db_knowledge.embedding.api_keys[0].model_name,
+            base_url=db_knowledge.embedding.api_keys[0].api_base,
+        )
+
+    vector_service = ElasticSearchVectorFactory().init_vector(knowledge=db_knowledge)
+
+    match kb_config["retrieve_type"]:
+        case "participle":
+            rs = vector_service.search_by_full_text(
+                query=kb_config["query"],  # 或者直接把 query 作为额外参数传进来
+                top_k=kb_config["top_k"],
+                score_threshold=kb_config["similarity_threshold"],
+                file_names_filter=file_names_filter,
+            )
+        case "semantic":
+            rs = vector_service.search_by_vector(
+                query=kb_config["query"],
+                top_k=kb_config["top_k"],
+                score_threshold=kb_config["vector_similarity_weight"],
+                file_names_filter=file_names_filter,
+            )
+        case _:
+            rs1 = vector_service.search_by_vector(
+                query=kb_config["query"],
+                top_k=kb_config["top_k"],
+                score_threshold=kb_config["vector_similarity_weight"],
+                file_names_filter=file_names_filter,
+            )
+            rs2 = vector_service.search_by_full_text(
+                query=kb_config["query"],
+                top_k=kb_config["top_k"],
+                score_threshold=kb_config["similarity_threshold"],
+                file_names_filter=file_names_filter,
+            )
+            # 合并去重
+            seen_ids = set()
+            unique_rs = []
+            for doc in rs1 + rs2:
+                if doc.metadata["doc_id"] not in seen_ids:
+                    seen_ids.add(doc.metadata["doc_id"])
+                    unique_rs.append(doc)
+            rs = unique_rs
+
+    results.extend(rs)
+    return results, chat_model, embedding_model
+
 
 def rerank(db: Session, reranker_id: uuid, query: str, docs: list[DocumentChunk], top_k: int) -> list[DocumentChunk]:
     """

api/app/core/storage/base.py

@@ -7,7 +7,7 @@ file operations across different storage backends.
 """
 
 from abc import ABC, abstractmethod
-from typing import Optional
+from typing import AsyncIterator, Optional
 
 
 class StorageBackend(ABC):
@@ -42,6 +42,26 @@ class StorageBackend(ABC):
         """
         pass
 
+    @abstractmethod
+    async def upload_stream(
+        self,
+        file_key: str,
+        stream: AsyncIterator[bytes],
+        content_type: Optional[str] = None,
+    ) -> int:
+        """
+        Upload a file from an async byte stream.
+
+        Args:
+            file_key: Unique identifier for the file.
+            stream: Async iterator yielding bytes chunks.
+            content_type: Optional MIME type of the file.
+
+        Returns:
+            Total bytes written.
+        """
+        pass
+
     @abstractmethod
     async def download(self, file_key: str) -> bytes:
         """
@@ -101,3 +121,18 @@ class StorageBackend(ABC):
             URL for accessing the file.
         """
         pass
+
+    async def get_permanent_url(self, file_key: str) -> Optional[str]:
+        """
+        Get a permanent public URL for the file (no expiration).
+
+        Returns None by default; remote storage backends should override this
+        if the bucket is configured for public read access.
+
+        Args:
+            file_key: Unique identifier for the file in the storage system.
+
+        Returns:
+            A permanent public URL, or None if not supported.
+        """
+        return None

api/app/core/storage/local.py

@@ -11,6 +11,7 @@ from typing import Optional
 
 import aiofiles
 import aiofiles.os
+from typing import AsyncIterator
 
 from app.core.storage.base import StorageBackend
 from app.core.storage_exceptions import (
@@ -179,6 +180,36 @@ class LocalStorage(StorageBackend):
         full_path = self._get_full_path(file_key)
         return full_path.exists()
 
+    async def upload_stream(
+        self,
+        file_key: str,
+        stream: AsyncIterator[bytes],
+        content_type: Optional[str] = None,
+    ) -> int:
+        """
+        Upload a file from an async byte stream to the local file system.
+
+        Returns:
+            Total bytes written.
+        """
+        full_path = self._get_full_path(file_key)
+        try:
+            full_path.parent.mkdir(parents=True, exist_ok=True)
+            total = 0
+            async with aiofiles.open(full_path, "wb") as f:
+                async for chunk in stream:
+                    await f.write(chunk)
+                    total += len(chunk)
+            logger.info(f"File stream uploaded successfully: {file_key}")
+            return total
+        except Exception as e:
+            logger.error(f"Failed to stream upload file {file_key}: {e}")
+            raise StorageUploadError(
+                message=f"Failed to stream upload file: {e}",
+                file_key=file_key,
+                cause=e,
+            )
+
     async def get_url(self, file_key: str, expires: int = 3600) -> str:
         """
         Get an access URL for the file.

api/app/core/storage/oss.py

@@ -5,8 +5,9 @@ This module provides a storage backend that stores files on Aliyun Object
 Storage Service (OSS) using the oss2 SDK.
 """
 
+import io
 import logging
-from typing import Optional
+from typing import AsyncIterator, Optional
 
 import oss2
 from oss2.exceptions import NoSuchKey, OssError
@@ -125,10 +126,39 @@ class OSSStorage(StorageBackend):
                 cause=e,
             )
 
+    async def upload_stream(
+        self,
+        file_key: str,
+        stream: AsyncIterator[bytes],
+        content_type: Optional[str] = None,
+    ) -> int:
+        """Upload from async stream to OSS. Returns total bytes written."""
+        buf = io.BytesIO()
+        try:
+            async for chunk in stream:
+                buf.write(chunk)
+            content = buf.getvalue()
+            headers = {"Content-Type": content_type} if content_type else None
+            self.bucket.put_object(file_key, content, headers=headers)
+            logger.info(f"File stream uploaded to OSS successfully: {file_key}")
+            return len(content)
+        except OssError as e:
+            logger.error(f"OSS error stream uploading file {file_key}: {e}")
+            raise StorageUploadError(
+                message=f"Failed to stream upload file to OSS: {e.message}",
+                file_key=file_key,
+                cause=e,
+            )
+        except Exception as e:
+            logger.error(f"Failed to stream upload file to OSS {file_key}: {e}")
+            raise StorageUploadError(
+                message=f"Failed to stream upload file to OSS: {e}",
+                file_key=file_key,
+                cause=e,
+            )
+
     async def download(self, file_key: str) -> bytes:
         """
-        Download a file from OSS.
-
         Args:
             file_key: Unique identifier for the file in the storage system.
 
@@ -231,3 +261,13 @@ class OSSStorage(StorageBackend):
             logger.error(f"Failed to generate presigned URL for {file_key}: {e}")
             # Return a basic URL format as fallback
             return f"https://{self.bucket_name}.{self.endpoint.replace('https://', '').replace('http://', '')}/{file_key}"
+
+    async def get_permanent_url(self, file_key: str) -> str:
+        """
+        Get a permanent public URL for the file (requires bucket public read).
+
+        Returns:
+            A permanent URL in the format: https://{bucket}.{endpoint}/{file_key}
+        """
+        host = self.endpoint.replace("https://", "").replace("http://", "")
+        return f"https://{self.bucket_name}.{host}/{file_key}"

api/app/core/storage/s3.py

@@ -5,8 +5,9 @@ This module provides a storage backend that stores files on AWS S3
 using the boto3 SDK.
 """
 
+import io
 import logging
-from typing import Optional
+from typing import AsyncIterator, Optional
 
 import boto3
 from botocore.exceptions import ClientError, NoCredentialsError, BotoCoreError
@@ -174,6 +175,62 @@ class S3Storage(StorageBackend):
                 cause=e,
             )
 
+    async def upload_stream(
+        self,
+        file_key: str,
+        stream: AsyncIterator[bytes],
+        content_type: Optional[str] = None,
+    ) -> int:
+        """Upload from async stream to S3 via multipart upload. Returns total bytes written."""
+        extra_args = {"ContentType": content_type} if content_type else {}
+        mpu = self.client.create_multipart_upload(
+            Bucket=self.bucket_name, Key=file_key, **extra_args
+        )
+        upload_id = mpu["UploadId"]
+        parts = []
+        part_number = 1
+        buf = io.BytesIO()
+        total = 0
+        min_part_size = 5 * 1024 * 1024  # S3 最小分片 5MB
+        try:
+            async for chunk in stream:
+                buf.write(chunk)
+                total += len(chunk)
+                if buf.tell() >= min_part_size:
+                    buf.seek(0)
+                    resp = self.client.upload_part(
+                        Bucket=self.bucket_name, Key=file_key,
+                        UploadId=upload_id, PartNumber=part_number, Body=buf.read()
+                    )
+                    parts.append({"PartNumber": part_number, "ETag": resp["ETag"]})
+                    part_number += 1
+                    buf = io.BytesIO()
+            # 上传剩余数据（最后一片可小于 5MB）
+            remaining = buf.getvalue()
+            if remaining:
+                resp = self.client.upload_part(
+                    Bucket=self.bucket_name, Key=file_key,
+                    UploadId=upload_id, PartNumber=part_number, Body=remaining
+                )
+                parts.append({"PartNumber": part_number, "ETag": resp["ETag"]})
+            self.client.complete_multipart_upload(
+                Bucket=self.bucket_name, Key=file_key,
+                UploadId=upload_id,
+                MultipartUpload={"Parts": parts}
+            )
+            logger.info(f"File stream uploaded to S3 successfully: {file_key}")
+            return total
+        except Exception as e:
+            self.client.abort_multipart_upload(
+                Bucket=self.bucket_name, Key=file_key, UploadId=upload_id
+            )
+            logger.error(f"Failed to stream upload file to S3 {file_key}: {e}")
+            raise StorageUploadError(
+                message=f"Failed to stream upload file to S3: {e}",
+                file_key=file_key,
+                cause=e,
+            )
+
     async def download(self, file_key: str) -> bytes:
         """
         Download a file from S3.
@@ -321,3 +378,12 @@ class S3Storage(StorageBackend):
             logger.error(f"Failed to generate presigned URL for {file_key}: {e}")
             # Return a basic URL format as fallback
             return f"https://{self.bucket_name}.s3.{self.region}.amazonaws.com/{file_key}"
+
+    async def get_permanent_url(self, file_key: str) -> str:
+        """
+        Get a permanent public URL for the file (requires bucket public read).
+
+        Returns:
+            A permanent URL in the format: https://{bucket}.s3.{region}.amazonaws.com/{file_key}
+        """
+        return f"https://{self.bucket_name}.s3.{self.region}.amazonaws.com/{file_key}"

api/app/core/tools/mcp/base.py

@@ -195,6 +195,6 @@ class MCPToolManager:
         except Exception as e:
             return {
                 "success": False,
-                "error": str(e),
-                "message": "连接失败"
+                "error": "连接失败",
+                "message": str(e)
             }

api/app/core/tools/mcp/client.py

@@ -23,7 +23,7 @@ class SimpleMCPClient:
     def __init__(self, server_url: str, connection_config: Dict[str, Any] = None):
         self.server_url = server_url
         self.connection_config = connection_config or {}
-        self.timeout = self.connection_config.get("timeout", 30)
+        self.timeout = self.connection_config.get("timeout", 10)
         
         # 确定连接类型
         self.is_websocket = server_url.startswith(("ws://", "wss://"))

api/app/core/workflow/engine/stream_output_coordinator.py

@@ -5,7 +5,7 @@
 import re
 from typing import AsyncGenerator
 
-from pydantic import BaseModel, Field
+from pydantic import BaseModel, Field, PrivateAttr
 
 from app.core.logging_config import get_logger
 from app.core.workflow.engine.variable_pool import VariablePool
@@ -52,10 +52,11 @@ class OutputContent(BaseModel):
         )
     )
 
-    _SCOPE: str | None = None
+    _SCOPE: str | None = PrivateAttr(default=None)
 
-    def get_scope(self) -> str:
-        self._SCOPE = SCOPE_PATTERN.findall(self.literal)[0]
+    def get_scope(self) -> str | None:
+        matches = SCOPE_PATTERN.findall(self.literal)
+        self._SCOPE = matches[0] if matches else None
         return self._SCOPE
 
     def depends_on_scope(self, scope: str) -> bool:
@@ -68,6 +69,8 @@ class OutputContent(BaseModel):
         Returns:
             bool: True if this segment references the given scope.
         """
+        if not self.is_variable:
+            return False
         if self._SCOPE:
             return self._SCOPE == scope
         return self.get_scope() == scope
@@ -152,7 +155,7 @@ class StreamOutputConfig(BaseModel):
         """
 
         # Case 1: resolve control branch dependency
-        if scope in self.control_nodes.keys():
+        if scope in self.control_nodes:
             if status is None:
                 raise RuntimeError("[Stream Output] Control node activation status not provided")
             if status in self.control_nodes[scope]:

api/app/core/workflow/nodes/base_node.py

@@ -16,6 +16,7 @@ from app.core.workflow.variable.base_variable import VariableType, FileObject
 from app.db import get_db_read
 from app.models import ModelConfig, ModelApiKey, LoadBalanceStrategy
 from app.schemas import FileInput
+from app.schemas.model_schema import ModelInfo
 from app.services.multimodal_service import MultimodalService
 
 logger = logging.getLogger(__name__)
@@ -620,11 +621,12 @@ class BaseNode(ABC):
 
     @staticmethod
     async def process_message(
-            provider: str,
-            is_omni: bool,
+            api_config: ModelInfo,
             content: str | dict | FileObject,
+            end_user_id: str,
             enable_file=False
     ) -> list | str | None:
+        provider = api_config.provider
         if isinstance(content, dict):
             content = FileObject(
                 type=content.get("type"),
@@ -643,7 +645,7 @@ class BaseNode(ABC):
             if content.content_cache.get(provider):
                 return content.content_cache[provider]
             with get_db_read() as db:
-                multimodel_service = MultimodalService(db, provider, is_omni=is_omni)
+                multimodel_service = MultimodalService(db, api_config=api_config)
                 file_obj = FileInput(
                     type=content.type,
                     url=content.url,
@@ -653,7 +655,8 @@ class BaseNode(ABC):
                 )
                 file_obj.set_content(content.get_content())
                 message = await multimodel_service.process_files(
-                    [file_obj]
+                    end_user_id,
+                    [file_obj],
                 )
                 content.set_content(file_obj.get_content())
                 if message:

api/app/core/workflow/nodes/if_else/node.py

@@ -5,7 +5,7 @@ from typing import Any
 from app.core.workflow.engine.state_manager import WorkflowState
 from app.core.workflow.engine.variable_pool import VariablePool
 from app.core.workflow.nodes.base_node import BaseNode
-from app.core.workflow.nodes.enums import ComparisonOperator, LogicOperator
+from app.core.workflow.nodes.enums import ComparisonOperator, LogicOperator, ValueInputType
 from app.core.workflow.nodes.if_else import IfElseNodeConfig
 from app.core.workflow.nodes.operators import ConditionExpressionResolver, CompareOperatorInstance
 from app.core.workflow.variable.base_variable import VariableType
@@ -23,6 +23,26 @@ class IfElseNode(BaseNode):
             "output": VariableType.STRING
         }
 
+    def _extract_input(self, state: WorkflowState, variable_pool: VariablePool) -> dict[str, Any]:
+        result = []
+        for case in self.typed_config.cases:
+            expressions = []
+            for expression in case.expressions:
+                expressions.append({
+                    "left": self.get_variable(expression.left, variable_pool, strict=False),
+                    "right": expression.right
+                    if expression.input_type == ValueInputType.CONSTANT
+                    else self.get_variable(expression.right, variable_pool, strict=False),
+                    "operator": expression.operator,
+                })
+            result.append({
+                "expressions": expressions,
+                "logical_operator": case.logical_operator,
+            })
+        return {
+            "cases": result
+        }
+
     @staticmethod
     def _evaluate(operator, instance: CompareOperatorInstance) -> Any:
         match operator:

api/app/core/workflow/nodes/knowledge/node.py

@@ -5,7 +5,7 @@ from typing import Any
 from app.core.error_codes import BizCode
 from app.core.exceptions import BusinessException
 from app.core.models import RedBearRerank, RedBearModelConfig
-from app.core.rag.vdb.elasticsearch.elasticsearch_vector import ElasticSearchVectorFactory
+from app.core.rag.vdb.elasticsearch.elasticsearch_vector import ElasticSearchVectorFactory, ElasticSearchVector
 from app.core.workflow.engine.state_manager import WorkflowState
 from app.core.workflow.engine.variable_pool import VariablePool
 from app.core.workflow.nodes.base_node import BaseNode
@@ -24,12 +24,19 @@ class KnowledgeRetrievalNode(BaseNode):
     def __init__(self, node_config: dict[str, Any], workflow_config: dict[str, Any]):
         super().__init__(node_config, workflow_config)
         self.typed_config: KnowledgeRetrievalNodeConfig | None = None
+        self.vector_service: ElasticSearchVector | None = None
 
     def _output_types(self) -> dict[str, VariableType]:
         return {
             "output": VariableType.ARRAY_STRING
         }
 
+    def _extract_input(self, state: WorkflowState, variable_pool: VariablePool) -> dict[str, Any]:
+        return {
+            "query": self._render_template(self.typed_config.query, variable_pool),
+            "knowledge_bases": [kb_config.model_dump(mode="json") for kb_config in self.typed_config.knowledge_bases],
+        }
+
     @staticmethod
     def _build_kb_filter(kb_ids: list[uuid.UUID], permission: knowledge_model.PermissionType):
         """
@@ -157,6 +164,50 @@ class KnowledgeRetrievalNode(BaseNode):
         )
         return reranker
 
+    def knowledge_retrieval(self, db, query, rs, db_knowledge, kb_config):
+        if db_knowledge.type == knowledge_model.KnowledgeType.FOLDER:
+            children = knowledge_repository.get_knowledges_by_parent_id(db=db, parent_id=db_knowledge.id)
+            for child in children:
+                if not (child and child.chunk_num > 0 and child.status == 1):
+                    continue
+                kb_config.kb_id = child.id
+                self.knowledge_retrieval(db, query, rs, child, kb_config)
+            return
+        self.vector_service = ElasticSearchVectorFactory().init_vector(knowledge=db_knowledge)
+        indices = f"Vector_index_{kb_config.kb_id}_Node".lower()
+        match kb_config.retrieve_type:
+            case RetrieveType.PARTICIPLE:
+                rs.extend(self.vector_service.search_by_full_text(query=query, top_k=kb_config.top_k,
+                                                                  indices=indices,
+                                                                  score_threshold=kb_config.similarity_threshold))
+            case RetrieveType.SEMANTIC:
+                rs.extend(self.vector_service.search_by_vector(query=query, top_k=kb_config.top_k,
+                                                               indices=indices,
+                                                               score_threshold=kb_config.vector_similarity_weight))
+            case RetrieveType.HYBRID:
+                rs1 = self.vector_service.search_by_vector(query=query, top_k=kb_config.top_k,
+                                                           indices=indices,
+                                                           score_threshold=kb_config.vector_similarity_weight)
+                rs2 = self.vector_service.search_by_full_text(query=query, top_k=kb_config.top_k,
+                                                              indices=indices,
+                                                              score_threshold=kb_config.similarity_threshold)
+
+                # Deduplicate hybrid retrieval results
+                unique_rs = self._deduplicate_docs(rs1, rs2)
+                if not unique_rs:
+                    return
+                if self.typed_config.reranker_id:
+                    self.vector_service.reranker = self.get_reranker_model()
+                    rs.extend(self.vector_service.rerank(query=query, docs=unique_rs, top_k=kb_config.top_k))
+                else:
+                    rs.extend(sorted(
+                        unique_rs,
+                        key=lambda d: d.metadata.get("score", 0),
+                        reverse=True
+                    )[:kb_config.top_k])
+            case _:
+                raise RuntimeError("Unknown retrieval type")
+
     async def execute(self, state: WorkflowState, variable_pool: VariablePool) -> Any:
         """
         Execute the knowledge retrieval workflow node.
@@ -185,56 +236,19 @@ class KnowledgeRetrievalNode(BaseNode):
         query = self._render_template(self.typed_config.query, variable_pool)
         with get_db_read() as db:
             knowledge_bases = self.typed_config.knowledge_bases
-            existing_ids = self._get_existing_kb_ids(db, [kb.kb_id for kb in knowledge_bases])
-
-            if not existing_ids:
-                raise RuntimeError("Knowledge base retrieval failed: the knowledge base does not exist.")
 
             rs = []
             for kb_config in knowledge_bases:
                 db_knowledge = knowledge_repository.get_knowledge_by_id(db=db, knowledge_id=kb_config.kb_id)
                 if not db_knowledge:
                     raise RuntimeError("The knowledge base does not exist or access is denied.")
+                self.knowledge_retrieval(db, query, rs, db_knowledge, kb_config)
 
-                vector_service = ElasticSearchVectorFactory().init_vector(knowledge=db_knowledge)
-                indices = f"Vector_index_{kb_config.kb_id}_Node".lower()
-                match kb_config.retrieve_type:
-                    case RetrieveType.PARTICIPLE:
-                        rs.extend(vector_service.search_by_full_text(query=query, top_k=kb_config.top_k,
-                                                                     indices=indices,
-                                                                     score_threshold=kb_config.similarity_threshold))
-                    case RetrieveType.SEMANTIC:
-                        rs.extend(vector_service.search_by_vector(query=query, top_k=kb_config.top_k,
-                                                                  indices=indices,
-                                                                  score_threshold=kb_config.vector_similarity_weight))
-                    case RetrieveType.HYBRID:
-                        rs1 = vector_service.search_by_vector(query=query, top_k=kb_config.top_k,
-                                                              indices=indices,
-                                                              score_threshold=kb_config.vector_similarity_weight)
-                        rs2 = vector_service.search_by_full_text(query=query, top_k=kb_config.top_k,
-                                                                 indices=indices,
-                                                                 score_threshold=kb_config.similarity_threshold)
-
-                        # Deduplicate hy    brid retrieval results
-                        unique_rs = self._deduplicate_docs(rs1, rs2)
-                        if not unique_rs:
-                            continue
-                        if self.typed_config.reranker_id:
-                            vector_service.reranker = self.get_reranker_model()
-                            rs.extend(vector_service.rerank(query=query, docs=unique_rs, top_k=kb_config.top_k))
-                        else:
-                            rs.extend(sorted(
-                                unique_rs,
-                                key=lambda d: d.metadata.get("score", 0),
-                                reverse=True
-                            )[:kb_config.top_k])
-                    case _:
-                        raise RuntimeError("Unknown retrieval type")
             if not rs:
                 return []
             if self.typed_config.reranker_id:
-                vector_service.reranker = self.get_reranker_model()
-                final_rs = vector_service.rerank(query=query, docs=rs, top_k=self.typed_config.reranker_top_k)
+                self.vector_service.reranker = self.get_reranker_model()
+                final_rs = self.vector_service.rerank(query=query, docs=rs, top_k=self.typed_config.reranker_top_k)
             else:
                 final_rs = sorted(
                     rs,

api/app/core/workflow/nodes/llm/node.py

@@ -20,6 +20,7 @@ from app.core.workflow.nodes.llm.config import LLMNodeConfig
 from app.core.workflow.variable.base_variable import VariableType
 from app.db import get_db_context
 from app.models import ModelType
+from app.schemas.model_schema import ModelInfo
 from app.services.model_service import ModelConfigService
 
 logger = logging.getLogger(__name__)
@@ -113,12 +114,15 @@ class LLMNode(BaseNode):
 
             # 在 Session 关闭前提取所有需要的数据
             api_config = self.model_balance(config)
-            model_name = api_config.model_name
-            provider = api_config.provider
-            api_key = api_config.api_key
-            api_base = api_config.api_base
-            is_omni = api_config.is_omni
-            model_type = config.type
+            model_info = ModelInfo(
+                model_name=api_config.model_name,
+                model_type=ModelType(config.type),
+                api_key=api_config.api_key,
+                api_base=api_config.api_base,
+                provider=api_config.provider,
+                is_omni=api_config.is_omni,
+                capability=api_config.capability
+            )
 
         # 4. 创建 LLM 实例（使用已提取的数据）
         # 注意：对于流式输出，需要在模型初始化时设置 streaming=True
@@ -126,17 +130,18 @@ class LLMNode(BaseNode):
 
         llm = RedBearLLM(
             RedBearModelConfig(
-                model_name=model_name,
-                provider=provider,
-                api_key=api_key,
-                base_url=api_base,
+                model_name=model_info.model_name,
+                provider=model_info.provider,
+                api_key=model_info.api_key,
+                base_url=model_info.api_base,
                 extra_params=extra_params,
-                is_omni=is_omni
+                is_omni=model_info.is_omni
             ),
-            type=ModelType(model_type)
+            type=model_info.model_type
         )
 
-        logger.debug(f"创建 LLM 实例: provider={provider}, model={model_name}, streaming={stream}")
+        logger.debug(
+            f"创建 LLM 实例: provider={model_info.provider}, model={model_info.model_name}, streaming={stream}")
 
         messages_config = self.typed_config.messages
 
@@ -148,35 +153,40 @@ class LLMNode(BaseNode):
                 content_template = msg_config.content
                 content_template = self._render_context(content_template, variable_pool)
                 content = self._render_template(content_template, variable_pool)
-
+                user_id = self.get_variable("sys.user_id", variable_pool)
                 # 根据角色创建对应的消息对象
                 if role == "system":
                     messages.append({
                         "role": "system",
-                        "content": await self.process_message(provider, is_omni, content, self.typed_config.vision)
+                        "content": await self.process_message(
+                            model_info,
+                            content,
+                            user_id,
+                            self.typed_config.vision,
+                        )
                     })
                 elif role in ["user", "human"]:
                     messages.append({
                         "role": "user",
-                        "content": await self.process_message(provider, is_omni, content, self.typed_config.vision)
+                        "content": await self.process_message(model_info, content, user_id, self.typed_config.vision)
                     })
                 elif role in ["ai", "assistant"]:
                     messages.append({
                         "role": "assistant",
-                        "content": await self.process_message(provider, is_omni, content, self.typed_config.vision)
+                        "content": await self.process_message(model_info, content, user_id, self.typed_config.vision)
                     })
                 else:
                     logger.warning(f"未知的消息角色: {role}，默认使用 user")
                     messages.append({
                         "role": "user",
-                        "content": await self.process_message(provider, is_omni, content, self.typed_config.vision)
+                        "content": await self.process_message(model_info, content, user_id, self.typed_config.vision)
                     })
 
             if self.typed_config.vision_input and self.typed_config.vision:
                 file_content = []
                 files = variable_pool.get_instance(self.typed_config.vision_input)
                 for file in files.value:
-                    content = await self.process_message(provider, is_omni, file.value, self.typed_config.vision)
+                    content = await self.process_message(model_info, file.value, user_id, self.typed_config.vision)
                     if content:
                         file_content.extend(content)
                 if messages and messages[-1]["role"] == 'user':
@@ -190,14 +200,19 @@ class LLMNode(BaseNode):
                     if isinstance(message["content"], list):
                         file_content = []
                         for file in message["content"]:
-                            content = await self.process_message(provider, is_omni, file, self.typed_config.vision)
+                            content = await self.process_message(model_info, file, user_id, self.typed_config.vision)
                             if content:
                                 file_content.extend(content)
                         history_message.append(
                             {"role": message["role"], "content": file_content}
                         )
                     else:
-                        message["content"] = await self.process_message(provider, is_omni, message["content"], self.typed_config.vision)
+                        message["content"] = await self.process_message(
+                            model_info,
+                            message["content"],
+                            user_id,
+                            self.typed_config.vision
+                        )
                         history_message.append(message)
                 messages = messages[:-1] + history_message + messages[-1:]
             self.messages = messages
@@ -293,7 +308,7 @@ class LLMNode(BaseNode):
 
         # 调用 LLM（流式，支持字符串或消息列表）
         last_meta_data = {}
-        async for chunk in llm.astream(self.messages, stream_usage=True):
+        async for chunk in llm.astream(self.messages):
             # 提取内容
             if hasattr(chunk, 'content'):
                 content = self.process_model_output(chunk.content)

api/app/core/workflow/nodes/parameter_extractor/node.py

@@ -37,6 +37,14 @@ class ParameterExtractorNode(BaseNode):
                 }
         return None
 
+    def _extract_input(self, state: WorkflowState, variable_pool: VariablePool) -> dict[str, Any]:
+        return {
+            "text": self._render_template(self.typed_config.text, variable_pool),
+            "prompt": self._render_template(self.typed_config.prompt, variable_pool),
+            "params": [param.model_dump(mode="json") for param in self.typed_config.params],
+            "model_id": str(self.typed_config.model_id),
+        }
+
     def _output_types(self) -> dict[str, VariableType]:
         outputs = {}
         for param in self.typed_config.params:

api/app/core/workflow/nodes/tool/node.py

@@ -27,7 +27,6 @@ class ToolNode(BaseNode):
     def _output_types(self) -> dict[str, VariableType]:
         return {
             "data": VariableType.STRING,
-            "error_code": VariableType.STRING,
             "execution_time": VariableType.NUMBER
         }
 
@@ -48,10 +47,7 @@ class ToolNode(BaseNode):
 
         if not tenant_id:
             logger.error(f"节点 {self.node_id} 缺少租户ID")
-            return {
-                "success": False,
-                "data": "缺少租户ID"
-            }
+            raise ValueError("缺少租户ID")
 
         # 渲染工具参数
         rendered_parameters = {}
@@ -83,13 +79,8 @@ class ToolNode(BaseNode):
             logger.info(f"节点 {self.node_id} 工具执行成功")
             return {
                 "data": result.data if isinstance(result.data, str) else json.dumps(result.data, ensure_ascii=False),
-                "error_code": "",
                 "execution_time": result.execution_time
             }
         else:
             logger.error(f"节点 {self.node_id} 工具执行失败: {result.error}")
-            return {
-                "data": result.error if isinstance(result.error, str) else json.dumps(result.error, ensure_ascii=False),
-                "error_code": result.error_code,
-                "execution_time": result.execution_time
-            }
+            raise ValueError(f"工具执行失败: {result.error if isinstance(result.error, str) else json.dumps(result.error, ensure_ascii=False)}")

api/app/db.py

@@ -16,7 +16,7 @@ engine = create_engine(
     pool_recycle=settings.DB_POOL_RECYCLE,
     pool_timeout=settings.DB_POOL_TIMEOUT,
     connect_args={
-        "options": "-c timezone=Asia/Shanghai -c statement_timeout=60000"
+        "options": "-c timezone=UTC -c statement_timeout=60000"
     },
 )
 SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

api/app/i18n/README.md

@@ -0,0 +1,61 @@
+# Internationalization (i18n) Module
+
+This module provides internationalization support for the MemoryBear API.
+
+## Components
+
+- `service.py` - Translation service and core translation logic
+- `middleware.py` - Language detection middleware
+- `dependencies.py` - FastAPI dependency injection functions
+- `exceptions.py` - Internationalized exception classes
+
+## Usage
+
+### Basic Translation
+
+```python
+from app.i18n import t
+
+# Simple translation
+message = t("common.success.created")
+
+# Parameterized translation
+message = t("common.validation.required", field="Name")
+```
+
+### Enum Translation
+
+```python
+from app.i18n import t_enum
+
+# Translate enum value
+role_display = t_enum("workspace_role", "manager")
+```
+
+### In FastAPI Endpoints
+
+```python
+from fastapi import Depends
+from app.i18n.dependencies import get_translator
+
+@router.post("/workspaces")
+async def create_workspace(
+    data: WorkspaceCreate,
+    t: Callable = Depends(get_translator)
+):
+    workspace = await workspace_service.create(data)
+    return {
+        "success": True,
+        "message": t("workspace.created_successfully"),
+        "data": workspace
+    }
+```
+
+## Configuration
+
+See `app/core/config.py` for i18n configuration options:
+
+- `I18N_DEFAULT_LANGUAGE` - Default language (default: "zh")
+- `I18N_SUPPORTED_LANGUAGES` - Supported languages (default: "zh,en")
+- `I18N_ENABLE_TRANSLATION_CACHE` - Enable caching (default: true)
+- `I18N_LOG_MISSING_TRANSLATIONS` - Log missing translations (default: true)

api/app/i18n/__init__.py

@@ -0,0 +1,124 @@
+"""
+Internationalization (i18n) module for MemoryBear Enterprise.
+
+This module provides complete i18n support for the backend API including:
+- Translation loading from multiple directories (community + enterprise)
+- Translation service with caching and fallback
+- Language detection middleware
+- Dependency injection for FastAPI
+- Convenience functions for easy usage
+
+Usage:
+    from app.i18n import t, t_enum
+
+    # Simple translation
+    message = t("common.success.created")
+
+    # Parameterized translation
+    error = t("common.validation.required", field="名称")
+
+    # Enum translation
+    role_display = t_enum("workspace_role", "manager")
+"""
+
+from app.i18n.dependencies import (
+    get_current_language,
+    get_enum_translator,
+    get_translator,
+)
+from app.i18n.exceptions import (
+    BadRequestError,
+    ConflictError,
+    FileNotFoundError,
+    FileTooLargeError,
+    ForbiddenError,
+    I18nException,
+    InternalServerError,
+    InvalidCredentialsError,
+    InvalidFileTypeError,
+    NotFoundError,
+    QuotaExceededError,
+    RateLimitExceededError,
+    ServiceUnavailableError,
+    TenantNotFoundError,
+    TenantSuspendedError,
+    TokenExpiredError,
+    TokenInvalidError,
+    UnauthorizedError,
+    UserAlreadyExistsError,
+    UserNotFoundError,
+    ValidationError,
+    WorkspaceNotFoundError,
+    WorkspacePermissionDeniedError,
+    get_current_locale,
+    set_current_locale,
+)
+from app.i18n.loader import TranslationLoader
+from app.i18n.logger import (
+    TranslationLogger,
+    get_translation_logger,
+    log_missing_translation,
+    log_translation_error,
+)
+from app.i18n.middleware import LanguageMiddleware
+from app.i18n.serializers import (
+    I18nResponseMixin,
+    WorkspaceSerializer,
+    WorkspaceMemberSerializer,
+    WorkspaceInviteSerializer,
+)
+from app.i18n.service import (
+    TranslationService,
+    get_translation_service,
+    t,
+    t_enum,
+)
+
+__all__ = [
+    "TranslationLoader",
+    "LanguageMiddleware",
+    "TranslationService",
+    "get_translation_service",
+    "t",
+    "t_enum",
+    "get_current_language",
+    "get_translator",
+    "get_enum_translator",
+    # Context management
+    "get_current_locale",
+    "set_current_locale",
+    # Logging
+    "TranslationLogger",
+    "get_translation_logger",
+    "log_missing_translation",
+    "log_translation_error",
+    # Serializers
+    "I18nResponseMixin",
+    "WorkspaceSerializer",
+    "WorkspaceMemberSerializer",
+    "WorkspaceInviteSerializer",
+    # Exception classes
+    "I18nException",
+    "BadRequestError",
+    "UnauthorizedError",
+    "ForbiddenError",
+    "NotFoundError",
+    "ConflictError",
+    "ValidationError",
+    "InternalServerError",
+    "ServiceUnavailableError",
+    "WorkspaceNotFoundError",
+    "WorkspacePermissionDeniedError",
+    "UserNotFoundError",
+    "UserAlreadyExistsError",
+    "TenantNotFoundError",
+    "TenantSuspendedError",
+    "InvalidCredentialsError",
+    "TokenExpiredError",
+    "TokenInvalidError",
+    "FileNotFoundError",
+    "FileTooLargeError",
+    "InvalidFileTypeError",
+    "RateLimitExceededError",
+    "QuotaExceededError",
+]

api/app/i18n/cache.py

@@ -0,0 +1,291 @@
+"""
+Advanced caching system for i18n translations.
+
+This module provides:
+- LRU cache for hot translations
+- Lazy loading mechanism
+- Memory optimization
+- Cache statistics
+"""
+
+import logging
+from functools import lru_cache
+from typing import Any, Dict, Optional
+from collections import OrderedDict
+import time
+
+logger = logging.getLogger(__name__)
+
+
+class TranslationCache:
+    """
+    Advanced translation cache with LRU eviction and lazy loading.
+    
+    Features:
+    - LRU cache for frequently accessed translations
+    - Lazy loading to reduce startup time
+    - Memory-efficient storage
+    - Cache hit/miss statistics
+    """
+    
+    def __init__(self, max_lru_size: int = 1000, enable_lazy_load: bool = True):
+        """
+        Initialize the translation cache.
+        
+        Args:
+            max_lru_size: Maximum size of LRU cache for hot translations
+            enable_lazy_load: Enable lazy loading of locales
+        """
+        self.max_lru_size = max_lru_size
+        self.enable_lazy_load = enable_lazy_load
+        
+        # Main cache: {locale: {namespace: {key: value}}}
+        self._main_cache: Dict[str, Dict[str, Any]] = {}
+        
+        # LRU cache for hot translations
+        self._lru_cache: OrderedDict = OrderedDict()
+        
+        # Loaded locales tracker
+        self._loaded_locales: set = set()
+        
+        # Statistics
+        self._stats = {
+            "hits": 0,
+            "misses": 0,
+            "lru_hits": 0,
+            "lru_misses": 0,
+            "lazy_loads": 0
+        }
+        
+        logger.info(
+            f"TranslationCache initialized with LRU size: {max_lru_size}, "
+            f"lazy loading: {enable_lazy_load}"
+        )
+    
+    def set_locale_data(self, locale: str, data: Dict[str, Any]):
+        """
+        Set translation data for a locale.
+        
+        Args:
+            locale: Locale code
+            data: Translation data dictionary
+        """
+        self._main_cache[locale] = data
+        self._loaded_locales.add(locale)
+        logger.debug(f"Loaded locale '{locale}' into cache")
+    
+    def get_translation(
+        self,
+        locale: str,
+        namespace: str,
+        key_path: list
+    ) -> Optional[str]:
+        """
+        Get translation from cache with LRU optimization.
+        
+        Args:
+            locale: Locale code
+            namespace: Translation namespace
+            key_path: List of nested keys
+            
+        Returns:
+            Translation string or None if not found
+        """
+        # Build cache key for LRU
+        cache_key = f"{locale}:{namespace}:{'.'.join(key_path)}"
+        
+        # Check LRU cache first (hot translations)
+        if cache_key in self._lru_cache:
+            self._stats["lru_hits"] += 1
+            self._stats["hits"] += 1
+            # Move to end (most recently used)
+            self._lru_cache.move_to_end(cache_key)
+            return self._lru_cache[cache_key]
+        
+        self._stats["lru_misses"] += 1
+        
+        # Check main cache
+        if locale not in self._main_cache:
+            self._stats["misses"] += 1
+            return None
+        
+        if namespace not in self._main_cache[locale]:
+            self._stats["misses"] += 1
+            return None
+        
+        # Navigate through nested keys
+        current = self._main_cache[locale][namespace]
+        for key in key_path:
+            if isinstance(current, dict) and key in current:
+                current = current[key]
+            else:
+                self._stats["misses"] += 1
+                return None
+        
+        # Return only if it's a string value
+        if not isinstance(current, str):
+            self._stats["misses"] += 1
+            return None
+        
+        self._stats["hits"] += 1
+        
+        # Add to LRU cache
+        self._add_to_lru(cache_key, current)
+        
+        return current
+    
+    def _add_to_lru(self, key: str, value: str):
+        """
+        Add translation to LRU cache.
+        
+        Args:
+            key: Cache key
+            value: Translation value
+        """
+        # Remove oldest if cache is full
+        if len(self._lru_cache) >= self.max_lru_size:
+            self._lru_cache.popitem(last=False)
+        
+        self._lru_cache[key] = value
+    
+    def is_locale_loaded(self, locale: str) -> bool:
+        """
+        Check if a locale is loaded.
+        
+        Args:
+            locale: Locale code
+            
+        Returns:
+            True if locale is loaded
+        """
+        return locale in self._loaded_locales
+    
+    def get_loaded_locales(self) -> list:
+        """
+        Get list of loaded locales.
+        
+        Returns:
+            List of locale codes
+        """
+        return list(self._loaded_locales)
+    
+    def clear_lru(self):
+        """Clear the LRU cache."""
+        self._lru_cache.clear()
+        logger.info("LRU cache cleared")
+    
+    def clear_locale(self, locale: str):
+        """
+        Clear cache for a specific locale.
+        
+        Args:
+            locale: Locale code
+        """
+        if locale in self._main_cache:
+            del self._main_cache[locale]
+            self._loaded_locales.discard(locale)
+        
+        # Clear related LRU entries
+        keys_to_remove = [k for k in self._lru_cache if k.startswith(f"{locale}:")]
+        for key in keys_to_remove:
+            del self._lru_cache[key]
+        
+        logger.info(f"Cleared cache for locale '{locale}'")
+    
+    def clear_all(self):
+        """Clear all caches."""
+        self._main_cache.clear()
+        self._lru_cache.clear()
+        self._loaded_locales.clear()
+        logger.info("All caches cleared")
+    
+    def get_stats(self) -> Dict[str, Any]:
+        """
+        Get cache statistics.
+        
+        Returns:
+            Dictionary with cache statistics
+        """
+        total_requests = self._stats["hits"] + self._stats["misses"]
+        hit_rate = (
+            self._stats["hits"] / total_requests * 100
+            if total_requests > 0
+            else 0
+        )
+        
+        lru_total = self._stats["lru_hits"] + self._stats["lru_misses"]
+        lru_hit_rate = (
+            self._stats["lru_hits"] / lru_total * 100
+            if lru_total > 0
+            else 0
+        )
+        
+        return {
+            "total_requests": total_requests,
+            "hits": self._stats["hits"],
+            "misses": self._stats["misses"],
+            "hit_rate": round(hit_rate, 2),
+            "lru_hits": self._stats["lru_hits"],
+            "lru_misses": self._stats["lru_misses"],
+            "lru_hit_rate": round(lru_hit_rate, 2),
+            "lru_size": len(self._lru_cache),
+            "lru_max_size": self.max_lru_size,
+            "loaded_locales": len(self._loaded_locales),
+            "lazy_loads": self._stats["lazy_loads"]
+        }
+    
+    def reset_stats(self):
+        """Reset cache statistics."""
+        self._stats = {
+            "hits": 0,
+            "misses": 0,
+            "lru_hits": 0,
+            "lru_misses": 0,
+            "lazy_loads": 0
+        }
+        logger.info("Cache statistics reset")
+    
+    def get_memory_usage(self) -> Dict[str, Any]:
+        """
+        Estimate memory usage of the cache.
+        
+        Returns:
+            Dictionary with memory usage information
+        """
+        import sys
+        
+        main_cache_size = sys.getsizeof(self._main_cache)
+        lru_cache_size = sys.getsizeof(self._lru_cache)
+        
+        # Rough estimate of nested data
+        for locale_data in self._main_cache.values():
+            main_cache_size += sys.getsizeof(locale_data)
+            for namespace_data in locale_data.values():
+                main_cache_size += sys.getsizeof(namespace_data)
+        
+        return {
+            "main_cache_bytes": main_cache_size,
+            "lru_cache_bytes": lru_cache_size,
+            "total_bytes": main_cache_size + lru_cache_size,
+            "main_cache_mb": round(main_cache_size / 1024 / 1024, 2),
+            "lru_cache_mb": round(lru_cache_size / 1024 / 1024, 2),
+            "total_mb": round((main_cache_size + lru_cache_size) / 1024 / 1024, 2)
+        }
+
+
+@lru_cache(maxsize=128)
+def get_cached_translation_key(locale: str, namespace: str, key: str) -> str:
+    """
+    LRU cached function for building translation cache keys.
+    
+    This reduces string concatenation overhead for frequently accessed keys.
+    
+    Args:
+        locale: Locale code
+        namespace: Translation namespace
+        key: Translation key
+        
+    Returns:
+        Cache key string
+    """
+    return f"{locale}:{namespace}:{key}"

api/app/i18n/dependencies.py

@@ -0,0 +1,158 @@
+"""
+FastAPI dependency injection functions for i18n.
+
+This module provides dependency injection functions that can be used
+in FastAPI route handlers to access the current language and translator.
+"""
+
+import logging
+from typing import Callable
+
+from fastapi import Request
+
+from app.i18n.service import get_translation_service
+
+logger = logging.getLogger(__name__)
+
+
+async def get_current_language(request: Request) -> str:
+    """
+    Get the current language from the request context.
+
+    This dependency extracts the language that was determined by the
+    LanguageMiddleware and stored in request.state.
+
+    Args:
+        request: FastAPI request object
+
+    Returns:
+        Language code (e.g., "zh", "en")
+
+    Usage:
+        @router.get("/example")
+        async def example(language: str = Depends(get_current_language)):
+            return {"language": language}
+    """
+    # Get language from request state (set by LanguageMiddleware)
+    language = getattr(request.state, "language", None)
+
+    if language is None:
+        # Fallback to default language if not set
+        from app.core.config import settings
+        language = settings.I18N_DEFAULT_LANGUAGE
+        logger.warning(
+            "Language not found in request.state, using default: "
+            f"{language}"
+        )
+
+    return language
+
+
+async def get_translator(request: Request) -> Callable:
+    """
+    Get a translator function bound to the current request's language.
+
+    This dependency returns a translation function that automatically
+    uses the current request's language, making it easy to translate
+    strings in route handlers.
+
+    Args:
+        request: FastAPI request object
+
+    Returns:
+        Translation function with signature: t(key: str, **params) -> str
+
+    Usage:
+        @router.post("/workspaces")
+        async def create_workspace(
+            data: WorkspaceCreate,
+            t: Callable = Depends(get_translator)
+        ):
+            workspace = await workspace_service.create(data)
+            return {
+                "success": True,
+                "message": t("workspace.created_successfully"),
+                "data": workspace
+            }
+
+        # With parameters
+        @router.get("/items")
+        async def get_items(t: Callable = Depends(get_translator)):
+            count = 5
+            return {
+                "message": t("items.found", count=count)
+            }
+    """
+    # Get current language
+    language = await get_current_language(request)
+
+    # Get translation service
+    service = get_translation_service()
+
+    # Return a bound translation function
+    def translate(key: str, **params) -> str:
+        """
+        Translate a key using the current request's language.
+
+        Args:
+            key: Translation key (e.g., "common.success.created")
+            **params: Parameters for parameterized messages
+
+        Returns:
+            Translated string
+        """
+        return service.translate(key, language, **params)
+
+    return translate
+
+
+async def get_enum_translator(request: Request) -> Callable:
+    """
+    Get an enum translator function bound to the current request's language.
+
+    This dependency returns a function for translating enum values
+    that automatically uses the current request's language.
+
+    Args:
+        request: FastAPI request object
+
+    Returns:
+        Enum translation function with signature:
+        t_enum(enum_type: str, value: str) -> str
+
+    Usage:
+        @router.get("/workspace/{id}")
+        async def get_workspace(
+            id: str,
+            t_enum: Callable = Depends(get_enum_translator)
+        ):
+            workspace = await workspace_service.get(id)
+            return {
+                "id": workspace.id,
+                "role": workspace.role,
+                "role_display": t_enum("workspace_role", workspace.role),
+                "status": workspace.status,
+                "status_display": t_enum("workspace_status", workspace.status)
+            }
+    """
+    # Get current language
+    language = await get_current_language(request)
+
+    # Get translation service
+    service = get_translation_service()
+
+    # Return a bound enum translation function
+    def translate_enum(enum_type: str, value: str) -> str:
+        """
+        Translate an enum value using the current request's language.
+
+        Args:
+            enum_type: Enum type name (e.g., "workspace_role")
+            value: Enum value (e.g., "manager")
+
+        Returns:
+            Translated enum display name
+        """
+        return service.translate_enum(enum_type, value, language)
+
+    return translate_enum

api/app/i18n/exceptions.py

@@ -0,0 +1,495 @@
+"""
+Internationalized exception classes for i18n system.
+
+This module provides exception classes that automatically translate
+error messages based on the current request's language.
+"""
+
+import logging
+from contextvars import ContextVar
+from typing import Any, Dict, Optional
+
+from fastapi import HTTPException, Request
+
+from app.i18n.service import get_translation_service
+
+logger = logging.getLogger(__name__)
+
+# Context variable to store current locale
+_current_locale: ContextVar[Optional[str]] = ContextVar("current_locale", default=None)
+
+
+def set_current_locale(locale: str) -> None:
+    """
+    Set the current locale in the context variable.
+    
+    This should be called by the LanguageMiddleware.
+    
+    Args:
+        locale: Locale code (e.g., "zh", "en")
+    """
+    _current_locale.set(locale)
+
+
+def get_current_locale() -> Optional[str]:
+    """
+    Get the current locale from the context variable.
+    
+    Returns:
+        Locale code or None if not set
+    """
+    return _current_locale.get()
+
+
+class I18nException(HTTPException):
+    """
+    Base exception class with automatic i18n support.
+
+    This exception automatically translates error messages based on:
+    1. The current request's language (from request.state.language)
+    2. The fallback language if request language is not available
+    3. The error key itself if no translation is found
+
+    Features:
+    - Automatic error message translation
+    - Parameterized error messages support
+    - Consistent error response format
+    - Language-aware error handling
+
+    Usage:
+        # Simple error
+        raise I18nException(
+            error_key="errors.workspace.not_found",
+            status_code=404
+        )
+
+        # Error with parameters
+        raise I18nException(
+            error_key="errors.validation.missing_field",
+            status_code=400,
+            field="name"
+        )
+
+        # Custom error code
+        raise I18nException(
+            error_key="errors.workspace.not_found",
+            error_code="WORKSPACE_NOT_FOUND",
+            status_code=404,
+            workspace_id="123"
+        )
+    """
+
+    def __init__(
+        self,
+        error_key: str,
+        status_code: int = 400,
+        error_code: Optional[str] = None,
+        locale: Optional[str] = None,
+        headers: Optional[Dict[str, str]] = None,
+        **params
+    ):
+        """
+        Initialize the i18n exception.
+
+        Args:
+            error_key: Translation key for the error message
+                      (e.g., "errors.workspace.not_found")
+            status_code: HTTP status code (default: 400)
+            error_code: Custom error code for API clients
+                       (default: derived from error_key)
+            locale: Target locale for translation (optional)
+                   If not provided, uses current request's language
+            headers: Additional HTTP headers
+            **params: Parameters for parameterized error messages
+        """
+        self.error_key = error_key
+        self.error_code = error_code or self._generate_error_code(error_key)
+        self.params = params
+
+        # Get locale from request context if not provided
+        if locale is None:
+            locale = self._get_current_locale()
+
+        # Translate error message
+        translation_service = get_translation_service()
+        message = translation_service.translate(
+            error_key,
+            locale,
+            **params
+        )
+
+        # Build error detail
+        detail = {
+            "error_code": self.error_code,
+            "message": message,
+        }
+
+        # Add parameters to detail if provided
+        if params:
+            detail["params"] = params
+
+        # Initialize HTTPException
+        super().__init__(
+            status_code=status_code,
+            detail=detail,
+            headers=headers
+        )
+
+        logger.debug(
+            f"I18nException raised: {self.error_code} "
+            f"(key: {error_key}, locale: {locale})"
+        )
+
+    def _get_current_locale(self) -> str:
+        """
+        Get the current locale from request context.
+
+        Returns:
+            Locale code (e.g., "zh", "en")
+        """
+        try:
+            # Try to get locale from context variable
+            locale = _current_locale.get()
+            if locale:
+                return locale
+        except Exception as e:
+            logger.debug(f"Could not get locale from context: {e}")
+
+        # Fallback to default locale
+        from app.core.config import settings
+        return settings.I18N_DEFAULT_LANGUAGE
+
+    def _generate_error_code(self, error_key: str) -> str:
+        """
+        Generate error code from error key.
+
+        Converts "errors.workspace.not_found" to "WORKSPACE_NOT_FOUND"
+
+        Args:
+            error_key: Translation key
+
+        Returns:
+            Error code in UPPER_SNAKE_CASE
+        """
+        # Remove "errors." prefix if present
+        if error_key.startswith("errors."):
+            error_key = error_key[7:]
+
+        # Convert to UPPER_SNAKE_CASE
+        parts = error_key.split(".")
+        return "_".join(parts).upper()
+
+
+# Specific exception classes for common errors
+
+class BadRequestError(I18nException):
+    """Bad request error (400)."""
+
+    def __init__(
+        self,
+        error_key: str = "errors.common.bad_request",
+        error_code: Optional[str] = None,
+        **params
+    ):
+        super().__init__(
+            error_key=error_key,
+            status_code=400,
+            error_code=error_code,
+            **params
+        )
+
+
+class UnauthorizedError(I18nException):
+    """Unauthorized error (401)."""
+
+    def __init__(
+        self,
+        error_key: str = "errors.auth.unauthorized",
+        error_code: Optional[str] = None,
+        **params
+    ):
+        super().__init__(
+            error_key=error_key,
+            status_code=401,
+            error_code=error_code,
+            **params
+        )
+
+
+class ForbiddenError(I18nException):
+    """Forbidden error (403)."""
+
+    def __init__(
+        self,
+        error_key: str = "errors.auth.forbidden",
+        error_code: Optional[str] = None,
+        **params
+    ):
+        super().__init__(
+            error_key=error_key,
+            status_code=403,
+            error_code=error_code,
+            **params
+        )
+
+
+class NotFoundError(I18nException):
+    """Not found error (404)."""
+
+    def __init__(
+        self,
+        error_key: str = "errors.common.not_found",
+        error_code: Optional[str] = None,
+        **params
+    ):
+        super().__init__(
+            error_key=error_key,
+            status_code=404,
+            error_code=error_code,
+            **params
+        )
+
+
+class ConflictError(I18nException):
+    """Conflict error (409)."""
+
+    def __init__(
+        self,
+        error_key: str = "errors.common.conflict",
+        error_code: Optional[str] = None,
+        **params
+    ):
+        super().__init__(
+            error_key=error_key,
+            status_code=409,
+            error_code=error_code,
+            **params
+        )
+
+
+class ValidationError(I18nException):
+    """Validation error (422)."""
+
+    def __init__(
+        self,
+        error_key: str = "errors.common.validation_failed",
+        error_code: Optional[str] = None,
+        **params
+    ):
+        super().__init__(
+            error_key=error_key,
+            status_code=422,
+            error_code=error_code,
+            **params
+        )
+
+
+class InternalServerError(I18nException):
+    """Internal server error (500)."""
+
+    def __init__(
+        self,
+        error_key: str = "errors.common.internal_error",
+        error_code: Optional[str] = None,
+        **params
+    ):
+        super().__init__(
+            error_key=error_key,
+            status_code=500,
+            error_code=error_code,
+            **params
+        )
+
+
+class ServiceUnavailableError(I18nException):
+    """Service unavailable error (503)."""
+
+    def __init__(
+        self,
+        error_key: str = "errors.common.service_unavailable",
+        error_code: Optional[str] = None,
+        **params
+    ):
+        super().__init__(
+            error_key=error_key,
+            status_code=503,
+            error_code=error_code,
+            **params
+        )
+
+
+# Domain-specific exception classes
+
+class WorkspaceNotFoundError(NotFoundError):
+    """Workspace not found error."""
+
+    def __init__(self, workspace_id: Optional[str] = None, **params):
+        if workspace_id:
+            params["workspace_id"] = workspace_id
+        super().__init__(
+            error_key="errors.workspace.not_found",
+            error_code="WORKSPACE_NOT_FOUND",
+            **params
+        )
+
+
+class WorkspacePermissionDeniedError(ForbiddenError):
+    """Workspace permission denied error."""
+
+    def __init__(self, workspace_id: Optional[str] = None, **params):
+        if workspace_id:
+            params["workspace_id"] = workspace_id
+        super().__init__(
+            error_key="errors.workspace.permission_denied",
+            error_code="WORKSPACE_PERMISSION_DENIED",
+            **params
+        )
+
+
+class UserNotFoundError(NotFoundError):
+    """User not found error."""
+
+    def __init__(self, user_id: Optional[str] = None, **params):
+        if user_id:
+            params["user_id"] = user_id
+        super().__init__(
+            error_key="errors.user.not_found",
+            error_code="USER_NOT_FOUND",
+            **params
+        )
+
+
+class UserAlreadyExistsError(ConflictError):
+    """User already exists error."""
+
+    def __init__(self, identifier: Optional[str] = None, **params):
+        if identifier:
+            params["identifier"] = identifier
+        super().__init__(
+            error_key="errors.user.already_exists",
+            error_code="USER_ALREADY_EXISTS",
+            **params
+        )
+
+
+class TenantNotFoundError(NotFoundError):
+    """Tenant not found error."""
+
+    def __init__(self, tenant_id: Optional[str] = None, **params):
+        if tenant_id:
+            params["tenant_id"] = tenant_id
+        super().__init__(
+            error_key="errors.tenant.not_found",
+            error_code="TENANT_NOT_FOUND",
+            **params
+        )
+
+
+class TenantSuspendedError(ForbiddenError):
+    """Tenant suspended error."""
+
+    def __init__(self, tenant_id: Optional[str] = None, **params):
+        if tenant_id:
+            params["tenant_id"] = tenant_id
+        super().__init__(
+            error_key="errors.tenant.suspended",
+            error_code="TENANT_SUSPENDED",
+            **params
+        )
+
+
+class InvalidCredentialsError(UnauthorizedError):
+    """Invalid credentials error."""
+
+    def __init__(self, **params):
+        super().__init__(
+            error_key="errors.auth.invalid_credentials",
+            error_code="INVALID_CREDENTIALS",
+            **params
+        )
+
+
+class TokenExpiredError(UnauthorizedError):
+    """Token expired error."""
+
+    def __init__(self, **params):
+        super().__init__(
+            error_key="errors.auth.token_expired",
+            error_code="TOKEN_EXPIRED",
+            **params
+        )
+
+
+class TokenInvalidError(UnauthorizedError):
+    """Token invalid error."""
+
+    def __init__(self, **params):
+        super().__init__(
+            error_key="errors.auth.token_invalid",
+            error_code="TOKEN_INVALID",
+            **params
+        )
+
+
+class FileNotFoundError(NotFoundError):
+    """File not found error."""
+
+    def __init__(self, file_id: Optional[str] = None, **params):
+        if file_id:
+            params["file_id"] = file_id
+        super().__init__(
+            error_key="errors.file.not_found",
+            error_code="FILE_NOT_FOUND",
+            **params
+        )
+
+
+class FileTooLargeError(BadRequestError):
+    """File too large error."""
+
+    def __init__(self, max_size: Optional[str] = None, **params):
+        if max_size:
+            params["max_size"] = max_size
+        super().__init__(
+            error_key="errors.file.too_large",
+            error_code="FILE_TOO_LARGE",
+            **params
+        )
+
+
+class InvalidFileTypeError(BadRequestError):
+    """Invalid file type error."""
+
+    def __init__(self, file_type: Optional[str] = None, **params):
+        if file_type:
+            params["file_type"] = file_type
+        super().__init__(
+            error_key="errors.file.invalid_type",
+            error_code="INVALID_FILE_TYPE",
+            **params
+        )
+
+
+class RateLimitExceededError(I18nException):
+    """Rate limit exceeded error (429)."""
+
+    def __init__(self, **params):
+        super().__init__(
+            error_key="errors.api.rate_limit_exceeded",
+            status_code=429,
+            error_code="RATE_LIMIT_EXCEEDED",
+            **params
+        )
+
+
+class QuotaExceededError(ForbiddenError):
+    """Quota exceeded error."""
+
+    def __init__(self, resource: Optional[str] = None, **params):
+        if resource:
+            params["resource"] = resource
+        super().__init__(
+            error_key="errors.api.quota_exceeded",
+            error_code="QUOTA_EXCEEDED",
+            **params
+        )

api/app/i18n/loader.py

@@ -0,0 +1,199 @@
+"""
+Translation file loader for i18n system.
+
+This module handles loading translation files from multiple directories
+(community edition + enterprise edition) and provides hot reload support.
+"""
+
+import json
+import logging
+from pathlib import Path
+from typing import Any, Dict, List, Optional
+
+logger = logging.getLogger(__name__)
+
+
+class TranslationLoader:
+    """
+    Translation file loader that supports:
+    - Loading from multiple directories (community + enterprise)
+    - Hot reload of translation files
+    - Automatic locale detection
+    """
+
+    def __init__(self, locales_dirs: Optional[List[str]] = None):
+        """
+        Initialize the translation loader.
+
+        Args:
+            locales_dirs: List of directories containing translation files.
+                         If None, will auto-detect from settings.
+        """
+        if locales_dirs is None:
+            locales_dirs = self._detect_locales_dirs()
+
+        self.locales_dirs = [Path(d) for d in locales_dirs]
+        logger.info(f"TranslationLoader initialized with directories: {self.locales_dirs}")
+
+    def _detect_locales_dirs(self) -> List[str]:
+        """
+        Auto-detect translation directories from settings.
+
+        Returns:
+            List of translation directory paths
+        """
+        from app.core.config import settings
+
+        dirs = []
+
+        # 1. Core locales directory (community edition, required)
+        core_dir = Path(settings.I18N_CORE_LOCALES_DIR)
+        if core_dir.exists():
+            dirs.append(str(core_dir))
+            logger.debug(f"Found core locales directory: {core_dir}")
+        else:
+            logger.warning(f"Core locales directory not found: {core_dir}")
+
+        # 2. Premium locales directory (enterprise edition, optional)
+        if settings.I18N_PREMIUM_LOCALES_DIR:
+            premium_dir = Path(settings.I18N_PREMIUM_LOCALES_DIR)
+            if premium_dir.exists():
+                dirs.append(str(premium_dir))
+                logger.debug(f"Found premium locales directory: {premium_dir}")
+        else:
+            # Auto-detect premium directory
+            premium_dir = Path("premium/locales")
+            if premium_dir.exists():
+                dirs.append(str(premium_dir))
+                logger.debug(f"Auto-detected premium locales directory: {premium_dir}")
+
+        if not dirs:
+            logger.error("No translation directories found!")
+
+        return dirs
+
+    def get_available_locales(self) -> List[str]:
+        """
+        Get list of all available locales across all directories.
+
+        Returns:
+            List of locale codes (e.g., ['zh', 'en'])
+        """
+        locales = set()
+
+        for locales_dir in self.locales_dirs:
+            if not locales_dir.exists():
+                continue
+
+            for locale_dir in locales_dir.iterdir():
+                if locale_dir.is_dir() and not locale_dir.name.startswith('.'):
+                    locales.add(locale_dir.name)
+
+        return sorted(list(locales))
+
+    def load_locale(self, locale: str) -> Dict[str, Any]:
+        """
+        Load all translation files for a specific locale from all directories.
+
+        Translation files are merged with priority:
+        - Later directories override earlier directories
+        - Enterprise translations override community translations
+
+        Args:
+            locale: Locale code (e.g., 'zh', 'en')
+
+        Returns:
+            Dictionary of translations organized by namespace
+            Format: {namespace: {key: value, ...}, ...}
+        """
+        translations = {}
+
+        # Load from each directory in order (later directories override earlier)
+        for locales_dir in self.locales_dirs:
+            locale_dir = locales_dir / locale
+            if not locale_dir.exists():
+                logger.debug(f"Locale directory not found: {locale_dir}")
+                continue
+
+            # Load all JSON files in this locale directory
+            for json_file in locale_dir.glob("*.json"):
+                namespace = json_file.stem
+
+                try:
+                    with open(json_file, "r", encoding="utf-8") as f:
+                        new_translations = json.load(f)
+
+                    # Merge translations (deep merge)
+                    if namespace in translations:
+                        translations[namespace] = self._deep_merge(
+                            translations[namespace],
+                            new_translations
+                        )
+                        logger.debug(
+                            f"Merged translations: {locale}/{namespace} from {json_file}"
+                        )
+                    else:
+                        translations[namespace] = new_translations
+                        logger.debug(
+                            f"Loaded translations: {locale}/{namespace} from {json_file}"
+                        )
+
+                except json.JSONDecodeError as e:
+                    logger.error(
+                        f"Failed to parse JSON file {json_file}: {e}"
+                    )
+                except Exception as e:
+                    logger.error(
+                        f"Failed to load translation file {json_file}: {e}"
+                    )
+
+        if not translations:
+            logger.warning(f"No translations found for locale: {locale}")
+
+        return translations
+
+    def reload(self, locale: Optional[str] = None) -> Dict[str, Dict[str, Any]]:
+        """
+        Reload translation files.
+
+        Args:
+            locale: Specific locale to reload. If None, reloads all locales.
+
+        Returns:
+            Dictionary of reloaded translations
+            Format: {locale: {namespace: {key: value}}}
+        """
+        if locale:
+            logger.info(f"Reloading translations for locale: {locale}")
+            return {locale: self.load_locale(locale)}
+        else:
+            logger.info("Reloading all translations")
+            all_translations = {}
+            for loc in self.get_available_locales():
+                all_translations[loc] = self.load_locale(loc)
+            return all_translations
+
+    def _deep_merge(self, base: Dict, override: Dict) -> Dict:
+        """
+        Deep merge two dictionaries.
+
+        Args:
+            base: Base dictionary
+            override: Dictionary with values to override
+
+        Returns:
+            Merged dictionary
+        """
+        result = base.copy()
+
+        for key, value in override.items():
+            if (
+                key in result
+                and isinstance(result[key], dict)
+                and isinstance(value, dict)
+            ):
+                result[key] = self._deep_merge(result[key], value)
+            else:
+                result[key] = value
+
+        return result

api/app/i18n/logger.py

@@ -0,0 +1,382 @@
+"""
+Translation logging for i18n system.
+
+This module provides:
+- TranslationLogger for recording missing translations
+- Missing translation report generation
+- Integration with existing logging system
+- Structured logging for translation events
+"""
+
+import logging
+from typing import Dict, List, Optional, Set
+from datetime import datetime
+from collections import defaultdict
+from pathlib import Path
+import json
+
+from app.core.logging_config import get_logger
+
+logger = get_logger(__name__)
+
+
+class TranslationLogger:
+    """
+    Logger for translation events and missing translations.
+    
+    Features:
+    - Records missing translations with context
+    - Generates missing translation reports
+    - Integrates with existing logging system
+    - Provides structured logging for analysis
+    """
+    
+    def __init__(self, log_file: Optional[str] = None):
+        """
+        Initialize translation logger.
+        
+        Args:
+            log_file: Optional custom log file path for missing translations
+        """
+        self.log_file = log_file or "logs/i18n/missing_translations.log"
+        self._missing_translations: Dict[str, Set[str]] = defaultdict(set)
+        self._missing_with_context: List[Dict] = []
+        self._max_context_entries = 10000  # Keep last 10k entries
+        
+        # Ensure log directory exists
+        log_path = Path(self.log_file)
+        log_path.parent.mkdir(parents=True, exist_ok=True)
+        
+        # Create dedicated file handler for missing translations
+        self._file_handler = logging.FileHandler(
+            self.log_file,
+            encoding='utf-8'
+        )
+        self._file_handler.setLevel(logging.WARNING)
+        
+        # Create formatter
+        formatter = logging.Formatter(
+            fmt='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
+            datefmt='%Y-%m-%d %H:%M:%S'
+        )
+        self._file_handler.setFormatter(formatter)
+        
+        # Create dedicated logger for missing translations
+        self._logger = logging.getLogger("i18n.missing_translations")
+        self._logger.setLevel(logging.WARNING)
+        self._logger.addHandler(self._file_handler)
+        self._logger.propagate = False  # Don't propagate to root logger
+        
+        logger.info(f"TranslationLogger initialized with log file: {self.log_file}")
+    
+    def log_missing_translation(
+        self,
+        key: str,
+        locale: str,
+        context: Optional[Dict] = None
+    ):
+        """
+        Log a missing translation.
+        
+        Args:
+            key: Translation key that was not found
+            locale: Locale code
+            context: Optional context information (e.g., request path, user info)
+        """
+        # Add to missing set
+        self._missing_translations[locale].add(key)
+        
+        # Create context entry
+        entry = {
+            "timestamp": datetime.now().isoformat(),
+            "key": key,
+            "locale": locale,
+            "context": context or {}
+        }
+        
+        # Keep only recent entries to avoid memory bloat
+        if len(self._missing_with_context) >= self._max_context_entries:
+            self._missing_with_context.pop(0)
+        
+        self._missing_with_context.append(entry)
+        
+        # Log to file
+        context_str = f" (context: {context})" if context else ""
+        self._logger.warning(
+            f"Missing translation: key='{key}', locale='{locale}'{context_str}"
+        )
+    
+    def log_translation_error(
+        self,
+        error_type: str,
+        message: str,
+        key: Optional[str] = None,
+        locale: Optional[str] = None,
+        context: Optional[Dict] = None
+    ):
+        """
+        Log a translation error.
+        
+        Args:
+            error_type: Type of error (e.g., "format_error", "parameter_missing")
+            message: Error message
+            key: Translation key (optional)
+            locale: Locale code (optional)
+            context: Optional context information
+        """
+        error_data = {
+            "error_type": error_type,
+            "message": message,
+            "key": key,
+            "locale": locale,
+            "context": context or {},
+            "timestamp": datetime.now().isoformat()
+        }
+        
+        self._logger.error(
+            f"Translation error: {error_type} - {message} "
+            f"(key: {key}, locale: {locale})"
+        )
+    
+    def log_translation_success(
+        self,
+        key: str,
+        locale: str,
+        duration_ms: Optional[float] = None
+    ):
+        """
+        Log a successful translation (debug level).
+        
+        Args:
+            key: Translation key
+            locale: Locale code
+            duration_ms: Optional duration in milliseconds
+        """
+        duration_str = f" ({duration_ms:.3f}ms)" if duration_ms else ""
+        logger.debug(
+            f"Translation success: key='{key}', locale='{locale}'{duration_str}"
+        )
+    
+    def get_missing_translations(
+        self,
+        locale: Optional[str] = None
+    ) -> Dict[str, List[str]]:
+        """
+        Get missing translations.
+        
+        Args:
+            locale: Specific locale (optional, returns all if None)
+            
+        Returns:
+            Dictionary of missing translations by locale
+        """
+        if locale:
+            return {locale: sorted(list(self._missing_translations.get(locale, set())))}
+        
+        return {
+            loc: sorted(list(keys))
+            for loc, keys in self._missing_translations.items()
+        }
+    
+    def get_missing_with_context(
+        self,
+        locale: Optional[str] = None,
+        limit: Optional[int] = None
+    ) -> List[Dict]:
+        """
+        Get missing translations with context.
+        
+        Args:
+            locale: Filter by locale (optional)
+            limit: Maximum number of entries to return (optional)
+            
+        Returns:
+            List of missing translation entries with context
+        """
+        entries = self._missing_with_context
+        
+        # Filter by locale if specified
+        if locale:
+            entries = [e for e in entries if e["locale"] == locale]
+        
+        # Apply limit if specified
+        if limit:
+            entries = entries[-limit:]
+        
+        return entries
+    
+    def generate_report(
+        self,
+        locale: Optional[str] = None,
+        output_file: Optional[str] = None
+    ) -> Dict:
+        """
+        Generate a missing translation report.
+        
+        Args:
+            locale: Specific locale (optional, generates for all if None)
+            output_file: Optional file path to save report as JSON
+            
+        Returns:
+            Report dictionary
+        """
+        missing = self.get_missing_translations(locale)
+        
+        report = {
+            "generated_at": datetime.now().isoformat(),
+            "total_missing": sum(len(keys) for keys in missing.values()),
+            "missing_by_locale": {
+                loc: {
+                    "count": len(keys),
+                    "keys": keys
+                }
+                for loc, keys in missing.items()
+            },
+            "recent_context": self.get_missing_with_context(locale, limit=100)
+        }
+        
+        # Save to file if specified
+        if output_file:
+            output_path = Path(output_file)
+            output_path.parent.mkdir(parents=True, exist_ok=True)
+            
+            with open(output_path, 'w', encoding='utf-8') as f:
+                json.dump(report, f, indent=2, ensure_ascii=False)
+            
+            logger.info(f"Missing translation report saved to: {output_file}")
+        
+        return report
+    
+    def get_statistics(self) -> Dict:
+        """
+        Get statistics about missing translations.
+        
+        Returns:
+            Dictionary with statistics
+        """
+        total_missing = sum(len(keys) for keys in self._missing_translations.values())
+        
+        # Count by namespace
+        namespace_counts = defaultdict(int)
+        for locale, keys in self._missing_translations.items():
+            for key in keys:
+                namespace = key.split('.')[0] if '.' in key else 'unknown'
+                namespace_counts[namespace] += 1
+        
+        return {
+            "total_missing": total_missing,
+            "locales_affected": len(self._missing_translations),
+            "missing_by_locale": {
+                loc: len(keys)
+                for loc, keys in self._missing_translations.items()
+            },
+            "missing_by_namespace": dict(namespace_counts),
+            "total_context_entries": len(self._missing_with_context)
+        }
+    
+    def clear(self, locale: Optional[str] = None):
+        """
+        Clear missing translation records.
+        
+        Args:
+            locale: Specific locale to clear (optional, clears all if None)
+        """
+        if locale:
+            self._missing_translations.pop(locale, None)
+            self._missing_with_context = [
+                e for e in self._missing_with_context
+                if e["locale"] != locale
+            ]
+            logger.info(f"Cleared missing translations for locale: {locale}")
+        else:
+            self._missing_translations.clear()
+            self._missing_with_context.clear()
+            logger.info("Cleared all missing translations")
+    
+    def export_to_json(self, output_file: str):
+        """
+        Export all missing translations to JSON file.
+        
+        Args:
+            output_file: Output file path
+        """
+        data = {
+            "exported_at": datetime.now().isoformat(),
+            "missing_translations": self.get_missing_translations(),
+            "statistics": self.get_statistics(),
+            "recent_context": self.get_missing_with_context(limit=1000)
+        }
+        
+        output_path = Path(output_file)
+        output_path.parent.mkdir(parents=True, exist_ok=True)
+        
+        with open(output_path, 'w', encoding='utf-8') as f:
+            json.dump(data, f, indent=2, ensure_ascii=False)
+        
+        logger.info(f"Missing translations exported to: {output_file}")
+    
+    def __del__(self):
+        """Cleanup file handler on deletion."""
+        try:
+            if hasattr(self, '_file_handler'):
+                self._file_handler.close()
+                self._logger.removeHandler(self._file_handler)
+        except Exception:
+            pass
+
+
+# Global translation logger instance
+_translation_logger: Optional[TranslationLogger] = None
+
+
+def get_translation_logger() -> TranslationLogger:
+    """
+    Get the global translation logger instance.
+    
+    Returns:
+        TranslationLogger singleton
+    """
+    global _translation_logger
+    if _translation_logger is None:
+        _translation_logger = TranslationLogger()
+    return _translation_logger
+
+
+def log_missing_translation(
+    key: str,
+    locale: str,
+    context: Optional[Dict] = None
+):
+    """
+    Log a missing translation (convenience function).
+    
+    Args:
+        key: Translation key
+        locale: Locale code
+        context: Optional context information
+    """
+    translation_logger = get_translation_logger()
+    translation_logger.log_missing_translation(key, locale, context)
+
+
+def log_translation_error(
+    error_type: str,
+    message: str,
+    key: Optional[str] = None,
+    locale: Optional[str] = None,
+    context: Optional[Dict] = None
+):
+    """
+    Log a translation error (convenience function).
+    
+    Args:
+        error_type: Type of error
+        message: Error message
+        key: Translation key (optional)
+        locale: Locale code (optional)
+        context: Optional context information
+    """
+    translation_logger = get_translation_logger()
+    translation_logger.log_translation_error(
+        error_type, message, key, locale, context
+    )

api/app/i18n/metrics.py

@@ -0,0 +1,337 @@
+"""
+Performance monitoring and metrics for i18n system.
+
+This module provides:
+- Translation request counters
+- Translation timing metrics
+- Missing translation tracking
+- Performance monitoring decorators
+- Prometheus-compatible metrics
+"""
+
+import logging
+import time
+from functools import wraps
+from typing import Any, Callable, Dict, Optional
+from collections import defaultdict
+from datetime import datetime
+
+logger = logging.getLogger(__name__)
+
+
+class TranslationMetrics:
+    """
+    Metrics collector for translation operations.
+    
+    Tracks:
+    - Translation request counts
+    - Translation timing (latency)
+    - Missing translations
+    - Cache performance
+    - Locale usage
+    """
+    
+    def __init__(self):
+        """Initialize metrics collector."""
+        # Request counters by locale
+        self._request_counts: Dict[str, int] = defaultdict(int)
+        
+        # Missing translation tracker
+        self._missing_translations: Dict[str, set] = defaultdict(set)
+        
+        # Timing metrics (in milliseconds)
+        self._timing_data: list = []
+        self._max_timing_samples = 10000  # Keep last 10k samples
+        
+        # Locale usage
+        self._locale_usage: Dict[str, int] = defaultdict(int)
+        
+        # Namespace usage
+        self._namespace_usage: Dict[str, int] = defaultdict(int)
+        
+        # Error counts
+        self._error_counts: Dict[str, int] = defaultdict(int)
+        
+        # Start time
+        self._start_time = datetime.now()
+        
+        logger.info("TranslationMetrics initialized")
+    
+    def record_request(self, locale: str, namespace: str = None):
+        """
+        Record a translation request.
+        
+        Args:
+            locale: Locale code
+            namespace: Translation namespace (optional)
+        """
+        self._request_counts[locale] += 1
+        self._locale_usage[locale] += 1
+        
+        if namespace:
+            self._namespace_usage[namespace] += 1
+    
+    def record_missing(self, key: str, locale: str):
+        """
+        Record a missing translation.
+        
+        Args:
+            key: Translation key
+            locale: Locale code
+        """
+        self._missing_translations[locale].add(key)
+        logger.debug(f"Missing translation recorded: {key} (locale: {locale})")
+    
+    def record_timing(self, duration_ms: float, locale: str, operation: str = "translate"):
+        """
+        Record translation operation timing.
+        
+        Args:
+            duration_ms: Duration in milliseconds
+            locale: Locale code
+            operation: Operation type
+        """
+        # Keep only recent samples to avoid memory bloat
+        if len(self._timing_data) >= self._max_timing_samples:
+            self._timing_data.pop(0)
+        
+        self._timing_data.append({
+            "duration_ms": duration_ms,
+            "locale": locale,
+            "operation": operation,
+            "timestamp": time.time()
+        })
+    
+    def record_error(self, error_type: str):
+        """
+        Record an error.
+        
+        Args:
+            error_type: Type of error
+        """
+        self._error_counts[error_type] += 1
+    
+    def get_summary(self) -> Dict[str, Any]:
+        """
+        Get metrics summary.
+        
+        Returns:
+            Dictionary with metrics summary
+        """
+        total_requests = sum(self._request_counts.values())
+        total_missing = sum(len(keys) for keys in self._missing_translations.values())
+        
+        # Calculate timing statistics
+        timing_stats = self._calculate_timing_stats()
+        
+        # Calculate uptime
+        uptime_seconds = (datetime.now() - self._start_time).total_seconds()
+        
+        return {
+            "uptime_seconds": round(uptime_seconds, 2),
+            "total_requests": total_requests,
+            "requests_per_locale": dict(self._request_counts),
+            "total_missing_translations": total_missing,
+            "missing_by_locale": {
+                locale: len(keys)
+                for locale, keys in self._missing_translations.items()
+            },
+            "timing": timing_stats,
+            "locale_usage": dict(self._locale_usage),
+            "namespace_usage": dict(self._namespace_usage),
+            "error_counts": dict(self._error_counts)
+        }
+    
+    def _calculate_timing_stats(self) -> Dict[str, Any]:
+        """
+        Calculate timing statistics.
+        
+        Returns:
+            Dictionary with timing statistics
+        """
+        if not self._timing_data:
+            return {
+                "count": 0,
+                "avg_ms": 0,
+                "min_ms": 0,
+                "max_ms": 0,
+                "p50_ms": 0,
+                "p95_ms": 0,
+                "p99_ms": 0
+            }
+        
+        durations = [d["duration_ms"] for d in self._timing_data]
+        durations.sort()
+        
+        count = len(durations)
+        avg = sum(durations) / count
+        
+        # Calculate percentiles
+        p50_idx = int(count * 0.50)
+        p95_idx = int(count * 0.95)
+        p99_idx = int(count * 0.99)
+        
+        return {
+            "count": count,
+            "avg_ms": round(avg, 3),
+            "min_ms": round(durations[0], 3),
+            "max_ms": round(durations[-1], 3),
+            "p50_ms": round(durations[p50_idx], 3),
+            "p95_ms": round(durations[p95_idx], 3),
+            "p99_ms": round(durations[p99_idx], 3)
+        }
+    
+    def get_missing_translations(self, locale: Optional[str] = None) -> Dict[str, list]:
+        """
+        Get missing translations.
+        
+        Args:
+            locale: Specific locale (optional, returns all if None)
+            
+        Returns:
+            Dictionary of missing translations by locale
+        """
+        if locale:
+            return {locale: list(self._missing_translations.get(locale, set()))}
+        
+        return {
+            locale: list(keys)
+            for locale, keys in self._missing_translations.items()
+        }
+    
+    def reset(self):
+        """Reset all metrics."""
+        self._request_counts.clear()
+        self._missing_translations.clear()
+        self._timing_data.clear()
+        self._locale_usage.clear()
+        self._namespace_usage.clear()
+        self._error_counts.clear()
+        self._start_time = datetime.now()
+        logger.info("Metrics reset")
+    
+    def export_prometheus(self) -> str:
+        """
+        Export metrics in Prometheus format.
+        
+        Returns:
+            Prometheus-formatted metrics string
+        """
+        lines = []
+        
+        # Translation requests counter
+        lines.append("# HELP i18n_translation_requests_total Total number of translation requests")
+        lines.append("# TYPE i18n_translation_requests_total counter")
+        for locale, count in self._request_counts.items():
+            lines.append(f'i18n_translation_requests_total{{locale="{locale}"}} {count}')
+        
+        # Missing translations counter
+        lines.append("# HELP i18n_missing_translations_total Total number of missing translations")
+        lines.append("# TYPE i18n_missing_translations_total counter")
+        for locale, keys in self._missing_translations.items():
+            lines.append(f'i18n_missing_translations_total{{locale="{locale}"}} {len(keys)}')
+        
+        # Timing metrics
+        timing_stats = self._calculate_timing_stats()
+        lines.append("# HELP i18n_translation_duration_ms Translation operation duration in milliseconds")
+        lines.append("# TYPE i18n_translation_duration_ms summary")
+        lines.append(f'i18n_translation_duration_ms{{quantile="0.5"}} {timing_stats["p50_ms"]}')
+        lines.append(f'i18n_translation_duration_ms{{quantile="0.95"}} {timing_stats["p95_ms"]}')
+        lines.append(f'i18n_translation_duration_ms{{quantile="0.99"}} {timing_stats["p99_ms"]}')
+        lines.append(f'i18n_translation_duration_ms_sum {sum(d["duration_ms"] for d in self._timing_data)}')
+        lines.append(f'i18n_translation_duration_ms_count {timing_stats["count"]}')
+        
+        # Error counter
+        lines.append("# HELP i18n_errors_total Total number of i18n errors")
+        lines.append("# TYPE i18n_errors_total counter")
+        for error_type, count in self._error_counts.items():
+            lines.append(f'i18n_errors_total{{type="{error_type}"}} {count}')
+        
+        return "\n".join(lines)
+
+
+# Global metrics instance
+_metrics: Optional[TranslationMetrics] = None
+
+
+def get_metrics() -> TranslationMetrics:
+    """
+    Get the global metrics instance.
+    
+    Returns:
+        TranslationMetrics singleton
+    """
+    global _metrics
+    if _metrics is None:
+        _metrics = TranslationMetrics()
+    return _metrics
+
+
+def monitor_performance(operation: str = "translate"):
+    """
+    Decorator to monitor translation operation performance.
+    
+    Args:
+        operation: Operation name for metrics
+        
+    Returns:
+        Decorated function
+        
+    Example:
+        @monitor_performance("translate")
+        def translate(key: str, locale: str) -> str:
+            ...
+    """
+    def decorator(func: Callable) -> Callable:
+        @wraps(func)
+        def wrapper(*args, **kwargs):
+            start_time = time.perf_counter()
+            
+            try:
+                result = func(*args, **kwargs)
+                
+                # Record timing
+                duration_ms = (time.perf_counter() - start_time) * 1000
+                
+                # Try to extract locale from args/kwargs
+                locale = kwargs.get("locale", "unknown")
+                if not locale and len(args) > 1:
+                    locale = args[1] if isinstance(args[1], str) else "unknown"
+                
+                metrics = get_metrics()
+                metrics.record_timing(duration_ms, locale, operation)
+                
+                return result
+            
+            except Exception as e:
+                # Record error
+                metrics = get_metrics()
+                metrics.record_error(type(e).__name__)
+                raise
+        
+        return wrapper
+    return decorator
+
+
+def track_missing_translation(key: str, locale: str):
+    """
+    Track a missing translation.
+    
+    Args:
+        key: Translation key
+        locale: Locale code
+    """
+    metrics = get_metrics()
+    metrics.record_missing(key, locale)
+
+
+def track_translation_request(locale: str, namespace: str = None):
+    """
+    Track a translation request.
+    
+    Args:
+        locale: Locale code
+        namespace: Translation namespace (optional)
+    """
+    metrics = get_metrics()
+    metrics.record_request(locale, namespace)

api/app/i18n/middleware.py

@@ -0,0 +1,202 @@
+"""
+Language detection middleware for i18n system.
+
+This middleware determines the language to use for each request based on:
+1. Query parameter (?lang=en)
+2. Accept-Language HTTP header
+3. User language preference (from database)
+4. Tenant default language
+5. System default language
+
+The detected language is injected into request.state.language and
+added to the response Content-Language header.
+"""
+
+import logging
+import re
+from typing import Optional
+
+from fastapi import Request
+from starlette.middleware.base import BaseHTTPMiddleware
+
+logger = logging.getLogger(__name__)
+
+
+class LanguageMiddleware(BaseHTTPMiddleware):
+    """
+    Language detection middleware.
+    
+    Determines the language for each request based on multiple sources
+    with a clear priority order, validates the language is supported,
+    and injects it into the request context.
+    """
+
+    async def dispatch(self, request: Request, call_next):
+        """
+        Process the request and determine the language.
+        
+        Args:
+            request: The incoming request
+            call_next: The next middleware/handler in the chain
+            
+        Returns:
+            Response with Content-Language header added
+        """
+        # Determine the language for this request
+        language = await self._determine_language(request)
+        
+        # Validate language is supported
+        from app.core.config import settings
+        if language not in settings.I18N_SUPPORTED_LANGUAGES:
+            logger.warning(
+                f"Unsupported language '{language}' requested, "
+                f"falling back to default: {settings.I18N_DEFAULT_LANGUAGE}"
+            )
+            language = settings.I18N_DEFAULT_LANGUAGE
+        
+        # Inject language into request state
+        request.state.language = language
+        
+        # Also set in context variable for exception handling
+        from app.i18n.exceptions import set_current_locale
+        set_current_locale(language)
+        
+        logger.debug(f"Request language set to: {language}")
+        
+        # Process the request
+        response = await call_next(request)
+        
+        # Add Content-Language header to response
+        response.headers["Content-Language"] = language
+        
+        return response
+
+    async def _determine_language(self, request: Request) -> str:
+        """
+        Determine the language to use based on priority order.
+        
+        Priority:
+        1. Query parameter (?lang=en)
+        2. Accept-Language HTTP header
+        3. User language preference (from database)
+        4. Tenant default language
+        5. System default language
+        
+        Args:
+            request: The incoming request
+            
+        Returns:
+            Language code (e.g., "zh", "en")
+        """
+        from app.core.config import settings
+        
+        # 1. Check query parameter (?lang=en)
+        if "lang" in request.query_params:
+            lang = request.query_params["lang"].strip().lower()
+            if lang:
+                logger.debug(f"Language from query parameter: {lang}")
+                return lang
+        
+        # 2. Check Accept-Language HTTP header
+        if "Accept-Language" in request.headers:
+            lang = self._parse_accept_language(
+                request.headers["Accept-Language"]
+            )
+            if lang:
+                logger.debug(f"Language from Accept-Language header: {lang}")
+                return lang
+        
+        # 3. Check user language preference (requires authentication)
+        # Note: This assumes user is already loaded into request.state by auth middleware
+        if hasattr(request.state, "user") and request.state.user:
+            user = request.state.user
+            if hasattr(user, "preferred_language") and user.preferred_language:
+                logger.debug(
+                    f"Language from user preference: {user.preferred_language}"
+                )
+                return user.preferred_language
+        
+        # 4. Check tenant default language
+        # Note: This assumes tenant is already loaded into request.state
+        if hasattr(request.state, "tenant") and request.state.tenant:
+            tenant = request.state.tenant
+            if hasattr(tenant, "default_language") and tenant.default_language:
+                logger.debug(
+                    f"Language from tenant default: {tenant.default_language}"
+                )
+                return tenant.default_language
+        
+        # 5. Fall back to system default language
+        logger.debug(
+            f"Using system default language: {settings.I18N_DEFAULT_LANGUAGE}"
+        )
+        return settings.I18N_DEFAULT_LANGUAGE
+
+    def _parse_accept_language(self, header: str) -> Optional[str]:
+        """
+        Parse the Accept-Language HTTP header.
+        
+        The Accept-Language header format:
+        Accept-Language: zh-CN,zh;q=0.9,en;q=0.8,en-US;q=0.7
+        
+        This method:
+        1. Parses all language codes and their quality values
+        2. Extracts the base language code (zh-CN -> zh)
+        3. Sorts by quality value (higher first)
+        4. Returns the first supported language
+        
+        Args:
+            header: Accept-Language header value
+            
+        Returns:
+            Language code if found and supported, None otherwise
+            
+        Examples:
+            _parse_accept_language("zh-CN,zh;q=0.9,en;q=0.8")
+            # => "zh" (if zh is supported)
+            
+            _parse_accept_language("en-US,en;q=0.9")
+            # => "en" (if en is supported)
+        """
+        from app.core.config import settings
+        
+        if not header:
+            return None
+        
+        # Parse language preferences with quality values
+        languages = []
+        
+        for item in header.split(","):
+            item = item.strip()
+            if not item:
+                continue
+            
+            # Split language code and quality value
+            parts = item.split(";")
+            lang_code = parts[0].strip()
+            
+            # Extract base language code (zh-CN -> zh, en-US -> en)
+            base_lang = lang_code.split("-")[0].lower()
+            
+            # Extract quality value (default: 1.0)
+            quality = 1.0
+            if len(parts) > 1:
+                # Look for q=0.9 pattern
+                q_match = re.search(r"q=([\d.]+)", parts[1])
+                if q_match:
+                    try:
+                        quality = float(q_match.group(1))
+                    except ValueError:
+                        quality = 1.0
+            
+            languages.append((base_lang, quality))
+        
+        # Sort by quality value (descending)
+        languages.sort(key=lambda x: x[1], reverse=True)
+        
+        # Return the first supported language
+        for lang_code, _ in languages:
+            if lang_code in settings.I18N_SUPPORTED_LANGUAGES:
+                return lang_code
+        
+        return None

api/app/i18n/serializers.py

@@ -0,0 +1,221 @@
+"""
+国际化响应序列化器
+
+提供基础的 I18nResponseMixin 类，用于为 API 响应添加国际化字段。
+"""
+
+from typing import Any, Dict, List, Union
+from pydantic import BaseModel
+
+
+class I18nResponseMixin:
+    """国际化响应混入类
+    
+    为响应数据添加国际化字段，特别是为枚举值添加 _display 后缀的翻译字段。
+    
+    使用方法：
+        1. 继承此类
+        2. 实现 _get_enum_fields() 方法定义需要翻译的枚举字段
+        3. 调用 serialize_with_i18n() 方法序列化数据
+    
+    示例：
+        class WorkspaceSerializer(I18nResponseMixin):
+            def _get_enum_fields(self) -> Dict[str, str]:
+                return {
+                    "role": "workspace_role",
+                    "status": "workspace_status"
+                }
+            
+            def serialize(self, workspace: Workspace, locale: str = "zh") -> Dict:
+                data = {
+                    "id": str(workspace.id),
+                    "name": workspace.name,
+                    "role": workspace.role,
+                    "status": workspace.status
+                }
+                return self.serialize_with_i18n(data, locale)
+    """
+    
+    def serialize_with_i18n(
+        self, 
+        data: Any, 
+        locale: str = "zh"
+    ) -> Union[Dict, List[Dict], Any]:
+        """序列化数据并添加国际化字段
+        
+        Args:
+            data: 要序列化的数据（字典、列表或 Pydantic 模型）
+            locale: 语言代码
+            
+        Returns:
+            序列化后的数据，包含国际化字段
+        """
+        # 如果是 Pydantic 模型，转换为字典
+        if isinstance(data, BaseModel):
+            data = data.model_dump()
+        
+        # 处理不同类型的数据
+        if isinstance(data, dict):
+            return self._serialize_dict(data, locale)
+        elif isinstance(data, list):
+            return [self._serialize_dict(item, locale) if isinstance(item, dict) else item for item in data]
+        else:
+            return data
+    
+    def _serialize_dict(self, data: Dict, locale: str) -> Dict:
+        """序列化字典并添加 _display 字段
+        
+        Args:
+            data: 字典数据
+            locale: 语言代码
+            
+        Returns:
+            添加了 _display 字段的字典
+        """
+        from app.i18n.service import get_translation_service
+        
+        translation_service = get_translation_service()
+        
+        result = data.copy()
+        
+        # 获取需要翻译的枚举字段
+        enum_fields = self._get_enum_fields()
+        
+        # 为每个枚举字段添加 _display 字段
+        for field, enum_type in enum_fields.items():
+            if field in result and result[field] is not None:
+                value = result[field]
+                # 翻译枚举值
+                display_value = translation_service.translate_enum(
+                    enum_type=enum_type,
+                    value=str(value),
+                    locale=locale
+                )
+                # 添加 _display 字段
+                result[f"{field}_display"] = display_value
+        
+        return result
+    
+    def _get_enum_fields(self) -> Dict[str, str]:
+        """获取需要翻译的枚举字段
+        
+        子类必须实现此方法，返回字段名到枚举类型的映射。
+        
+        Returns:
+            字段名到枚举类型的映射
+            例如: {"role": "workspace_role", "status": "workspace_status"}
+        """
+        return {}
+
+
+class WorkspaceSerializer(I18nResponseMixin):
+    """工作空间序列化器
+    
+    为工作空间响应添加国际化字段。
+    """
+    
+    def _get_enum_fields(self) -> Dict[str, str]:
+        """定义工作空间的枚举字段"""
+        return {
+            "role": "workspace_role",
+            "status": "workspace_status"
+        }
+    
+    def serialize(self, workspace_data: Union[Dict, BaseModel], locale: str = "zh") -> Dict:
+        """序列化工作空间数据
+        
+        Args:
+            workspace_data: 工作空间数据（字典或 Pydantic 模型）
+            locale: 语言代码
+            
+        Returns:
+            序列化后的工作空间数据，包含国际化字段
+        """
+        return self.serialize_with_i18n(workspace_data, locale)
+    
+    def serialize_list(self, workspaces: List[Union[Dict, BaseModel]], locale: str = "zh") -> List[Dict]:
+        """序列化工作空间列表
+        
+        Args:
+            workspaces: 工作空间列表
+            locale: 语言代码
+            
+        Returns:
+            序列化后的工作空间列表
+        """
+        return [self.serialize(ws, locale) for ws in workspaces]
+
+
+class WorkspaceMemberSerializer(I18nResponseMixin):
+    """工作空间成员序列化器
+    
+    为工作空间成员响应添加国际化字段。
+    """
+    
+    def _get_enum_fields(self) -> Dict[str, str]:
+        """定义工作空间成员的枚举字段"""
+        return {
+            "role": "workspace_role"
+        }
+    
+    def serialize(self, member_data: Union[Dict, BaseModel], locale: str = "zh") -> Dict:
+        """序列化工作空间成员数据
+        
+        Args:
+            member_data: 成员数据（字典或 Pydantic 模型）
+            locale: 语言代码
+            
+        Returns:
+            序列化后的成员数据，包含国际化字段
+        """
+        return self.serialize_with_i18n(member_data, locale)
+    
+    def serialize_list(self, members: List[Union[Dict, BaseModel]], locale: str = "zh") -> List[Dict]:
+        """序列化工作空间成员列表
+        
+        Args:
+            members: 成员列表
+            locale: 语言代码
+            
+        Returns:
+            序列化后的成员列表
+        """
+        return [self.serialize(member, locale) for member in members]
+
+
+class WorkspaceInviteSerializer(I18nResponseMixin):
+    """工作空间邀请序列化器
+    
+    为工作空间邀请响应添加国际化字段。
+    """
+    
+    def _get_enum_fields(self) -> Dict[str, str]:
+        """定义工作空间邀请的枚举字段"""
+        return {
+            "status": "invite_status",
+            "role": "workspace_role"
+        }
+    
+    def serialize(self, invite_data: Union[Dict, BaseModel], locale: str = "zh") -> Dict:
+        """序列化工作空间邀请数据
+        
+        Args:
+            invite_data: 邀请数据（字典或 Pydantic 模型）
+            locale: 语言代码
+            
+        Returns:
+            序列化后的邀请数据，包含国际化字段
+        """
+        return self.serialize_with_i18n(invite_data, locale)
+    
+    def serialize_list(self, invites: List[Union[Dict, BaseModel]], locale: str = "zh") -> List[Dict]:
+        """序列化工作空间邀请列表
+        
+        Args:
+            invites: 邀请列表
+            locale: 语言代码
+            
+        Returns:
+            序列化后的邀请列表
+        """
+        return [self.serialize(invite, locale) for invite in invites]

api/app/i18n/service.py

@@ -0,0 +1,370 @@
+"""
+Translation service for i18n system.
+
+This module provides the core translation functionality including:
+- Translation lookup with fallback mechanism
+- Parameterized message support
+- Enum value translation
+- Memory caching for performance
+- Performance monitoring and metrics
+"""
+
+import logging
+from functools import lru_cache
+from typing import Any, Dict, Optional
+
+from app.i18n.loader import TranslationLoader
+from app.i18n.cache import TranslationCache
+from app.i18n.metrics import get_metrics, monitor_performance, track_missing_translation, track_translation_request
+from app.i18n.logger import get_translation_logger
+
+logger = logging.getLogger(__name__)
+
+
+class TranslationService:
+    """
+    Translation service that provides:
+    - Fast translation lookup with memory cache
+    - Parameterized message support ({param} syntax)
+    - Fallback mechanism (current locale → default locale → key)
+    - Enum value translation
+    - Deep merge of multi-directory translations
+    """
+
+    def __init__(self, locales_dirs: Optional[list] = None):
+        """
+        Initialize the translation service.
+
+        Args:
+            locales_dirs: List of directories containing translation files.
+                         If None, will auto-detect from settings.
+        """
+        from app.core.config import settings
+
+        self.loader = TranslationLoader(locales_dirs)
+        self.default_locale = settings.I18N_DEFAULT_LANGUAGE
+        self.fallback_locale = settings.I18N_FALLBACK_LANGUAGE
+        self.log_missing = settings.I18N_LOG_MISSING_TRANSLATIONS
+        self.enable_cache = settings.I18N_ENABLE_TRANSLATION_CACHE
+
+        # Initialize advanced cache with LRU
+        lru_cache_size = getattr(settings, 'I18N_LRU_CACHE_SIZE', 1000)
+        self.cache = TranslationCache(
+            max_lru_size=lru_cache_size,
+            enable_lazy_load=False  # Load all at startup for now
+        )
+
+        # Load all translations into cache
+        self._load_all_locales()
+
+        # Initialize metrics
+        self.metrics = get_metrics()
+        
+        # Initialize translation logger
+        self.translation_logger = get_translation_logger()
+
+        logger.info(
+            f"TranslationService initialized with default locale: {self.default_locale}, "
+            f"LRU cache size: {lru_cache_size}"
+        )
+
+    def _load_all_locales(self):
+        """Load all available locales into memory cache."""
+        available_locales = self.loader.get_available_locales()
+        logger.info(f"Loading translations for locales: {available_locales}")
+
+        for locale in available_locales:
+            locale_data = self.loader.load_locale(locale)
+            self.cache.set_locale_data(locale, locale_data)
+
+        logger.info(f"Loaded {len(available_locales)} locales into cache")
+
+    @monitor_performance("translate")
+    def translate(
+        self,
+        key: str,
+        locale: Optional[str] = None,
+        **params
+    ) -> str:
+        """
+        Translate a key to the target locale.
+
+        Supports:
+        - Dot-separated keys (e.g., "common.success.created")
+        - Parameterized messages (e.g., "Hello {name}")
+        - Fallback mechanism
+
+        Args:
+            key: Translation key (format: "namespace.key.subkey")
+            locale: Target locale (defaults to default locale)
+            **params: Parameters for parameterized messages
+
+        Returns:
+            Translated string, or the key itself if translation not found
+
+        Examples:
+            translate("common.success.created", "zh")
+            # => "创建成功"
+
+            translate("common.validation.required", "zh", field="名称")
+            # => "名称不能为空"
+        """
+        if locale is None:
+            locale = self.default_locale
+
+        # Parse key (namespace.key.subkey)
+        parts = key.split(".", 1)
+        if len(parts) < 2:
+            if self.log_missing:
+                logger.warning(f"Invalid translation key format: {key}")
+            return key
+
+        namespace = parts[0]
+        key_path = parts[1].split(".")
+
+        # Track request
+        track_translation_request(locale, namespace)
+
+        # Get translation from cache
+        translation = self.cache.get_translation(locale, namespace, key_path)
+
+        # Fallback to default locale if not found
+        if translation is None and locale != self.fallback_locale:
+            translation = self.cache.get_translation(
+                self.fallback_locale, namespace, key_path
+            )
+
+        # If still not found, return the key itself
+        if translation is None:
+            if self.log_missing:
+                logger.warning(
+                    f"Missing translation: {key} (locale: {locale})"
+                )
+                track_missing_translation(key, locale)
+                
+                # Log to translation logger with context
+                self.translation_logger.log_missing_translation(
+                    key=key,
+                    locale=locale,
+                    context={"namespace": namespace}
+                )
+            return key
+
+        # Apply parameters if provided
+        if params:
+            try:
+                translation = translation.format(**params)
+            except KeyError as e:
+                error_msg = f"Missing parameter in translation '{key}': {e}"
+                logger.error(error_msg)
+                self.translation_logger.log_translation_error(
+                    error_type="parameter_missing",
+                    message=error_msg,
+                    key=key,
+                    locale=locale,
+                    context={"params": list(params.keys())}
+                )
+            except Exception as e:
+                error_msg = f"Error formatting translation '{key}': {e}"
+                logger.error(error_msg)
+                self.translation_logger.log_translation_error(
+                    error_type="format_error",
+                    message=error_msg,
+                    key=key,
+                    locale=locale
+                )
+
+        return translation
+
+    def _get_translation(
+        self,
+        locale: str,
+        namespace: str,
+        key_path: list
+    ) -> Optional[str]:
+        """
+        Get translation from cache (deprecated, use cache.get_translation).
+
+        Args:
+            locale: Locale code
+            namespace: Translation namespace
+            key_path: List of nested keys
+
+        Returns:
+            Translation string or None if not found
+        """
+        return self.cache.get_translation(locale, namespace, key_path)
+
+    @monitor_performance("translate_enum")
+    def translate_enum(
+        self,
+        enum_type: str,
+        value: str,
+        locale: Optional[str] = None
+    ) -> str:
+        """
+        Translate an enum value.
+
+        Args:
+            enum_type: Enum type name (e.g., "workspace_role")
+            value: Enum value (e.g., "manager")
+            locale: Target locale
+
+        Returns:
+            Translated enum display name
+
+        Examples:
+            translate_enum("workspace_role", "manager", "zh")
+            # => "管理员"
+
+            translate_enum("invite_status", "pending", "en")
+            # => "Pending"
+        """
+        key = f"enums.{enum_type}.{value}"
+        return self.translate(key, locale)
+
+    def has_translation(self, key: str, locale: str) -> bool:
+        """
+        Check if a translation exists for the given key and locale.
+
+        Args:
+            key: Translation key
+            locale: Locale code
+
+        Returns:
+            True if translation exists, False otherwise
+        """
+        parts = key.split(".", 1)
+        if len(parts) < 2:
+            return False
+
+        namespace = parts[0]
+        key_path = parts[1].split(".")
+
+        translation = self.cache.get_translation(locale, namespace, key_path)
+        return translation is not None
+
+    def reload(self, locale: Optional[str] = None):
+        """
+        Reload translation files.
+
+        Args:
+            locale: Specific locale to reload. If None, reloads all locales.
+        """
+        logger.info(f"Reloading translations for locale: {locale or 'all'}")
+
+        if locale:
+            locale_data = self.loader.load_locale(locale)
+            self.cache.set_locale_data(locale, locale_data)
+            # Clear LRU cache for this locale
+            self.cache.clear_locale(locale)
+        else:
+            self._load_all_locales()
+            # Clear all LRU cache
+            self.cache.clear_lru()
+
+        logger.info("Translation reload completed")
+
+    def get_available_locales(self) -> list:
+        """
+        Get list of all available locales.
+
+        Returns:
+            List of locale codes
+        """
+        return self.cache.get_loaded_locales()
+    
+    def get_cache_stats(self) -> Dict[str, Any]:
+        """
+        Get cache statistics.
+        
+        Returns:
+            Dictionary with cache statistics
+        """
+        return self.cache.get_stats()
+    
+    def get_metrics_summary(self) -> Dict[str, Any]:
+        """
+        Get metrics summary.
+        
+        Returns:
+            Dictionary with metrics summary
+        """
+        return self.metrics.get_summary()
+    
+    def get_memory_usage(self) -> Dict[str, Any]:
+        """
+        Get memory usage information.
+        
+        Returns:
+            Dictionary with memory usage information
+        """
+        return self.cache.get_memory_usage()
+
+    def get_loaded_dirs(self) -> list:
+        """
+        Get list of loaded translation directories.
+
+        Returns:
+            List of directory paths
+        """
+        return self.loader.locales_dirs
+
+
+# Global singleton instance
+_translation_service: Optional[TranslationService] = None
+
+
+def get_translation_service() -> TranslationService:
+    """
+    Get the global translation service instance.
+
+    Returns:
+        TranslationService singleton
+    """
+    global _translation_service
+    if _translation_service is None:
+        _translation_service = TranslationService()
+    return _translation_service
+
+
+# Convenience functions for easy access
+def t(key: str, locale: Optional[str] = None, **params) -> str:
+    """
+    Translate a key (convenience function).
+
+    Args:
+        key: Translation key
+        locale: Target locale (optional, uses default if not provided)
+        **params: Parameters for parameterized messages
+
+    Returns:
+        Translated string
+
+    Examples:
+        t("common.success.created")
+        t("common.validation.required", field="名称")
+        t("workspace.member_count", count=5)
+    """
+    service = get_translation_service()
+    return service.translate(key, locale, **params)
+
+
+def t_enum(enum_type: str, value: str, locale: Optional[str] = None) -> str:
+    """
+    Translate an enum value (convenience function).
+
+    Args:
+        enum_type: Enum type name
+        value: Enum value
+        locale: Target locale
+
+    Returns:
+        Translated enum display name
+
+    Examples:
+        t_enum("workspace_role", "manager")
+        t_enum("invite_status", "pending", "en")
+    """
+    service = get_translation_service()
+    return service.translate_enum(enum_type, value, locale)

api/app/locales/en/README.md

@@ -0,0 +1,26 @@
+# English Translation Files
+
+This directory contains English translation files.
+
+## File Structure
+
+- `common.json` - Common translations (success messages, actions, validation)
+- `auth.json` - Authentication module translations
+- `workspace.json` - Workspace module translations
+- `tenant.json` - Tenant module translations
+- `errors.json` - Error message translations
+- `enums.json` - Enum value translations
+
+## Translation File Format
+
+All translation files use JSON format and support nested structures.
+
+Example:
+```json
+{
+  "success": {
+    "created": "Created successfully",
+    "updated": "Updated successfully"
+  }
+}
+```

api/app/locales/en/auth.json

@@ -0,0 +1,55 @@
+{
+  "login": {
+    "success": "Login successful",
+    "failed": "Login failed",
+    "invalid_credentials": "Invalid username or password",
+    "account_locked": "Account has been locked",
+    "account_disabled": "Account has been disabled"
+  },
+  "logout": {
+    "success": "Logout successful",
+    "failed": "Logout failed"
+  },
+  "token": {
+    "refresh_success": "Token refreshed successfully",
+    "invalid": "Invalid token",
+    "expired": "Token has expired",
+    "blacklisted": "Token has been invalidated",
+    "invalid_refresh_token": "Invalid refresh token",
+    "refresh_token_blacklisted": "Refresh token has been invalidated"
+  },
+  "registration": {
+    "success": "Registration successful",
+    "failed": "Registration failed",
+    "email_exists": "Email already in use",
+    "username_exists": "Username already taken"
+  },
+  "password": {
+    "reset_success": "Password reset successful",
+    "reset_failed": "Password reset failed",
+    "change_success": "Password changed successfully",
+    "change_failed": "Password change failed",
+    "incorrect": "Incorrect password",
+    "too_weak": "Password is too weak",
+    "mismatch": "Passwords do not match"
+  },
+  "invite": {
+    "invalid": "Invalid or expired invite code",
+    "email_mismatch": "Invite email does not match login email",
+    "accept_success": "Invite accepted successfully",
+    "accept_failed": "Failed to accept invite",
+    "password_verification_failed": "Failed to accept invite, password verification error",
+    "bind_workspace_success": "Workspace bound successfully",
+    "bind_workspace_failed": "Failed to bind workspace"
+  },
+  "user": {
+    "not_found": "User not found",
+    "already_exists": "User already exists",
+    "created_with_invite": "User created successfully and joined workspace"
+  },
+  "session": {
+    "expired": "Session expired, please login again",
+    "invalid": "Invalid session",
+    "single_session_enabled": "Single sign-on enabled, other device sessions will be logged out"
+  }
+}

api/app/locales/en/common.json

@@ -0,0 +1,132 @@
+{
+  "success": {
+    "created": "Created successfully",
+    "updated": "Updated successfully",
+    "deleted": "Deleted successfully",
+    "retrieved": "Retrieved successfully",
+    "saved": "Saved successfully",
+    "uploaded": "Uploaded successfully",
+    "downloaded": "Downloaded successfully",
+    "sent": "Sent successfully",
+    "completed": "Completed",
+    "confirmed": "Confirmed",
+    "cancelled": "Cancelled",
+    "archived": "Archived",
+    "restored": "Restored"
+  },
+  "actions": {
+    "create": "Create",
+    "update": "Update",
+    "delete": "Delete",
+    "view": "View",
+    "edit": "Edit",
+    "save": "Save",
+    "cancel": "Cancel",
+    "confirm": "Confirm",
+    "submit": "Submit",
+    "upload": "Upload",
+    "download": "Download",
+    "send": "Send",
+    "search": "Search",
+    "filter": "Filter",
+    "sort": "Sort",
+    "export": "Export",
+    "import": "Import",
+    "refresh": "Refresh",
+    "reset": "Reset",
+    "back": "Back",
+    "next": "Next",
+    "previous": "Previous",
+    "finish": "Finish",
+    "close": "Close",
+    "open": "Open",
+    "archive": "Archive",
+    "restore": "Restore",
+    "duplicate": "Duplicate",
+    "share": "Share",
+    "invite": "Invite",
+    "remove": "Remove",
+    "add": "Add",
+    "select": "Select",
+    "clear": "Clear"
+  },
+  "validation": {
+    "required": "{field} is required",
+    "invalid_format": "{field} format is invalid",
+    "too_long": "{field} cannot exceed {max} characters",
+    "too_short": "{field} must be at least {min} characters",
+    "invalid_email": "Invalid email format",
+    "invalid_url": "Invalid URL format",
+    "invalid_phone": "Invalid phone number format",
+    "invalid_date": "Invalid date format",
+    "invalid_number": "Must be a valid number",
+    "out_of_range": "{field} must be between {min} and {max}",
+    "already_exists": "{field} already exists",
+    "not_found": "{field} not found",
+    "invalid_value": "Invalid value for {field}",
+    "password_mismatch": "Passwords do not match",
+    "weak_password": "Password is too weak, please use a stronger password",
+    "invalid_credentials": "Invalid username or password",
+    "unauthorized": "Unauthorized access",
+    "forbidden": "Permission denied",
+    "expired": "{field} has expired",
+    "invalid_token": "Invalid token",
+    "file_too_large": "File size cannot exceed {max}",
+    "invalid_file_type": "Unsupported file type",
+    "duplicate": "Duplicate {field}"
+  },
+  "status": {
+    "active": "Active",
+    "inactive": "Inactive",
+    "pending": "Pending",
+    "processing": "Processing",
+    "completed": "Completed",
+    "failed": "Failed",
+    "cancelled": "Cancelled",
+    "archived": "Archived",
+    "deleted": "Deleted",
+    "draft": "Draft",
+    "published": "Published",
+    "suspended": "Suspended",
+    "expired": "Expired"
+  },
+  "messages": {
+    "loading": "Loading...",
+    "saving": "Saving...",
+    "processing": "Processing...",
+    "uploading": "Uploading...",
+    "downloading": "Downloading...",
+    "no_data": "No data available",
+    "no_results": "No results found",
+    "confirm_delete": "Are you sure you want to delete? This action cannot be undone.",
+    "confirm_action": "Are you sure you want to perform this action?",
+    "operation_success": "Operation successful",
+    "operation_failed": "Operation failed",
+    "please_wait": "Please wait...",
+    "try_again": "Please try again",
+    "contact_support": "If the problem persists, please contact support"
+  },
+  "pagination": {
+    "page": "Page {page}",
+    "of": "of {total}",
+    "items": "{total} items",
+    "per_page": "{count} per page",
+    "showing": "Showing {from} to {to} of {total}",
+    "first": "First",
+    "last": "Last",
+    "next": "Next",
+    "previous": "Previous"
+  },
+  "time": {
+    "just_now": "Just now",
+    "minutes_ago": "{count} minutes ago",
+    "hours_ago": "{count} hours ago",
+    "days_ago": "{count} days ago",
+    "weeks_ago": "{count} weeks ago",
+    "months_ago": "{count} months ago",
+    "years_ago": "{count} years ago",
+    "today": "Today",
+    "yesterday": "Yesterday",
+    "tomorrow": "Tomorrow"
+  }
+}

api/app/locales/en/enums.json

@@ -0,0 +1,132 @@
+{
+  "workspace_role": {
+    "owner": "Owner",
+    "manager": "Manager",
+    "member": "Member",
+    "guest": "Guest"
+  },
+  "workspace_status": {
+    "active": "Active",
+    "inactive": "Inactive",
+    "archived": "Archived",
+    "suspended": "Suspended",
+    "deleted": "Deleted"
+  },
+  "invite_status": {
+    "pending": "Pending",
+    "accepted": "Accepted",
+    "rejected": "Rejected",
+    "revoked": "Revoked",
+    "expired": "Expired"
+  },
+  "user_status": {
+    "active": "Active",
+    "inactive": "Inactive",
+    "suspended": "Suspended",
+    "deleted": "Deleted",
+    "pending": "Pending"
+  },
+  "tenant_status": {
+    "active": "Active",
+    "inactive": "Inactive",
+    "suspended": "Suspended",
+    "expired": "Expired",
+    "trial": "Trial"
+  },
+  "file_status": {
+    "uploading": "Uploading",
+    "processing": "Processing",
+    "completed": "Completed",
+    "failed": "Failed",
+    "deleted": "Deleted"
+  },
+  "task_status": {
+    "pending": "Pending",
+    "running": "Running",
+    "completed": "Completed",
+    "failed": "Failed",
+    "cancelled": "Cancelled",
+    "paused": "Paused"
+  },
+  "priority": {
+    "low": "Low",
+    "medium": "Medium",
+    "high": "High",
+    "urgent": "Urgent"
+  },
+  "visibility": {
+    "public": "Public",
+    "private": "Private",
+    "internal": "Internal",
+    "shared": "Shared"
+  },
+  "permission": {
+    "read": "Read",
+    "write": "Write",
+    "delete": "Delete",
+    "admin": "Admin",
+    "owner": "Owner"
+  },
+  "notification_type": {
+    "info": "Info",
+    "warning": "Warning",
+    "error": "Error",
+    "success": "Success"
+  },
+  "language": {
+    "zh": "Chinese (Simplified)",
+    "en": "English",
+    "ja": "Japanese",
+    "ko": "Korean",
+    "fr": "French",
+    "de": "German",
+    "es": "Spanish"
+  },
+  "timezone": {
+    "utc": "UTC",
+    "asia_shanghai": "Asia/Shanghai",
+    "asia_tokyo": "Asia/Tokyo",
+    "america_new_york": "America/New_York",
+    "europe_london": "Europe/London"
+  },
+  "date_format": {
+    "short": "Short",
+    "medium": "Medium",
+    "long": "Long",
+    "full": "Full"
+  },
+  "sort_order": {
+    "asc": "Ascending",
+    "desc": "Descending"
+  },
+  "filter_operator": {
+    "equals": "Equals",
+    "not_equals": "Not Equals",
+    "contains": "Contains",
+    "not_contains": "Not Contains",
+    "starts_with": "Starts With",
+    "ends_with": "Ends With",
+    "greater_than": "Greater Than",
+    "less_than": "Less Than",
+    "greater_or_equal": "Greater or Equal",
+    "less_or_equal": "Less or Equal",
+    "in": "In",
+    "not_in": "Not In",
+    "is_null": "Is Null",
+    "is_not_null": "Is Not Null"
+  },
+  "log_level": {
+    "debug": "Debug",
+    "info": "Info",
+    "warning": "Warning",
+    "error": "Error",
+    "critical": "Critical"
+  },
+  "api_method": {
+    "get": "GET",
+    "post": "POST",
+    "put": "PUT",
+    "patch": "PATCH",
+    "delete": "DELETE"
+  }
+}

api/app/locales/en/errors.json

@@ -0,0 +1,138 @@
+{
+  "common": {
+    "internal_error": "Internal server error",
+    "network_error": "Network connection error",
+    "timeout": "Request timeout",
+    "service_unavailable": "Service temporarily unavailable",
+    "bad_request": "Bad request parameters",
+    "unauthorized": "Unauthorized access",
+    "forbidden": "Access forbidden",
+    "not_found": "Resource not found",
+    "method_not_allowed": "Method not allowed",
+    "conflict": "Resource conflict",
+    "too_many_requests": "Too many requests, please try again later",
+    "validation_failed": "Validation failed",
+    "database_error": "Database operation failed",
+    "file_operation_error": "File operation failed"
+  },
+  "auth": {
+    "invalid_credentials": "Invalid username or password",
+    "token_expired": "Session expired, please login again",
+    "token_invalid": "Invalid authentication token",
+    "token_missing": "Authentication token missing",
+    "unauthorized": "Unauthorized access",
+    "forbidden": "Permission denied",
+    "account_locked": "Account has been locked",
+    "account_disabled": "Account has been disabled",
+    "account_not_verified": "Account not verified",
+    "password_incorrect": "Incorrect password",
+    "password_too_weak": "Password is too weak",
+    "password_expired": "Password expired, please change it",
+    "email_not_verified": "Email not verified",
+    "phone_not_verified": "Phone number not verified",
+    "verification_code_invalid": "Invalid verification code",
+    "verification_code_expired": "Verification code expired",
+    "login_failed": "Login failed",
+    "logout_failed": "Logout failed",
+    "session_expired": "Session expired",
+    "already_logged_in": "Already logged in",
+    "not_logged_in": "Not logged in"
+  },
+  "user": {
+    "not_found": "User not found",
+    "already_exists": "User already exists",
+    "email_already_exists": "Email already in use",
+    "phone_already_exists": "Phone number already in use",
+    "username_already_exists": "Username already taken",
+    "invalid_email": "Invalid email format",
+    "invalid_phone": "Invalid phone number format",
+    "invalid_username": "Invalid username format",
+    "create_failed": "Failed to create user",
+    "update_failed": "Failed to update user",
+    "delete_failed": "Failed to delete user",
+    "cannot_delete_self": "Cannot delete yourself",
+    "cannot_update_self_role": "Cannot update your own role",
+    "profile_update_failed": "Failed to update profile",
+    "avatar_upload_failed": "Failed to upload avatar",
+    "password_change_failed": "Failed to change password",
+    "old_password_incorrect": "Old password is incorrect"
+  },
+  "workspace": {
+    "not_found": "Workspace not found",
+    "already_exists": "Workspace already exists",
+    "name_required": "Workspace name is required",
+    "name_too_long": "Workspace name is too long",
+    "create_failed": "Failed to create workspace",
+    "update_failed": "Failed to update workspace",
+    "delete_failed": "Failed to delete workspace",
+    "permission_denied": "Permission denied to access this workspace",
+    "not_member": "Not a workspace member",
+    "already_member": "Already a workspace member",
+    "member_limit_reached": "Member limit reached",
+    "cannot_leave_last_manager": "Cannot leave, you are the last manager",
+    "cannot_remove_last_manager": "Cannot remove the last manager",
+    "cannot_remove_self": "Cannot remove yourself",
+    "invite_not_found": "Invite not found",
+    "invite_expired": "Invite has expired",
+    "invite_already_accepted": "Invite already accepted",
+    "invite_already_revoked": "Invite already revoked",
+    "invite_send_failed": "Failed to send invite",
+    "archived": "Workspace is archived",
+    "suspended": "Workspace is suspended"
+  },
+  "tenant": {
+    "not_found": "Tenant not found",
+    "already_exists": "Tenant already exists",
+    "create_failed": "Failed to create tenant",
+    "update_failed": "Failed to update tenant",
+    "delete_failed": "Failed to delete tenant",
+    "suspended": "Tenant is suspended",
+    "expired": "Tenant has expired",
+    "license_invalid": "Invalid license",
+    "license_expired": "License has expired",
+    "quota_exceeded": "Quota exceeded"
+  },
+  "file": {
+    "not_found": "File not found",
+    "upload_failed": "File upload failed",
+    "download_failed": "File download failed",
+    "delete_failed": "File deletion failed",
+    "too_large": "File size exceeds limit",
+    "invalid_type": "Unsupported file type",
+    "invalid_format": "Invalid file format",
+    "corrupted": "File is corrupted",
+    "storage_full": "Storage is full",
+    "access_denied": "Access denied to this file"
+  },
+  "api": {
+    "rate_limit_exceeded": "API rate limit exceeded",
+    "quota_exceeded": "API quota exceeded",
+    "invalid_api_key": "Invalid API key",
+    "api_key_expired": "API key has expired",
+    "api_key_revoked": "API key has been revoked",
+    "endpoint_not_found": "API endpoint not found",
+    "method_not_allowed": "Method not allowed",
+    "invalid_request": "Invalid request",
+    "missing_parameter": "Missing required parameter: {param}",
+    "invalid_parameter": "Invalid parameter: {param}"
+  },
+  "database": {
+    "connection_failed": "Database connection failed",
+    "query_failed": "Database query failed",
+    "transaction_failed": "Database transaction failed",
+    "constraint_violation": "Data constraint violation",
+    "duplicate_key": "Duplicate data",
+    "foreign_key_violation": "Foreign key constraint violation",
+    "deadlock": "Database deadlock"
+  },
+  "validation": {
+    "invalid_input": "Invalid input data",
+    "missing_field": "Missing required field: {field}",
+    "invalid_field": "Invalid field: {field}",
+    "field_too_long": "Field too long: {field}",
+    "field_too_short": "Field too short: {field}",
+    "invalid_format": "Invalid format: {field}",
+    "invalid_value": "Invalid value: {field}",
+    "out_of_range": "Value out of range: {field}"
+  }
+}

api/app/locales/en/i18n.json

@@ -0,0 +1,27 @@
+{
+  "language": {
+    "not_found": "Language {locale} not found",
+    "already_exists": "Language {locale} already exists",
+    "add_instructions": "Language {locale} validated successfully. Please create translation files in {dir} directory to complete the addition.",
+    "update_instructions": "Language {locale} update validated successfully. Please update I18N_SUPPORTED_LANGUAGES environment variable to apply configuration changes."
+  },
+  "namespace": {
+    "not_found": "Namespace {namespace} not found in language {locale}"
+  },
+  "translation": {
+    "invalid_key_format": "Invalid translation key format: {key}. Should use format: namespace.key.subkey",
+    "update_instructions": "Translation {locale}/{key} update validated successfully. Please modify the corresponding JSON translation file to apply changes."
+  },
+  "reload": {
+    "disabled": "Translation hot reload is disabled. Please enable I18N_ENABLE_HOT_RELOAD in configuration.",
+    "success": "Translations reloaded successfully",
+    "failed": "Translation reload failed: {error}"
+  },
+  "metrics": {
+    "reset_success": "Performance metrics reset successfully"
+  },
+  "logs": {
+    "export_success": "Missing translations exported to: {file}",
+    "clear_success": "Missing translation logs cleared successfully"
+  }
+}

api/app/locales/en/tenant.json

@@ -0,0 +1,63 @@
+{
+  "info": {
+    "get_success": "Tenant information retrieved successfully",
+    "get_failed": "Failed to retrieve tenant information",
+    "update_success": "Tenant information updated successfully",
+    "update_failed": "Failed to update tenant information"
+  },
+  "create": {
+    "success": "Tenant created successfully",
+    "failed": "Failed to create tenant"
+  },
+  "delete": {
+    "success": "Tenant deleted successfully",
+    "failed": "Failed to delete tenant"
+  },
+  "status": {
+    "activate_success": "Tenant activated successfully",
+    "activate_failed": "Failed to activate tenant",
+    "deactivate_success": "Tenant deactivated successfully",
+    "deactivate_failed": "Failed to deactivate tenant"
+  },
+  "language": {
+    "get_success": "Tenant language configuration retrieved successfully",
+    "get_failed": "Failed to retrieve tenant language configuration",
+    "update_success": "Tenant language configuration updated successfully",
+    "update_failed": "Failed to update tenant language configuration",
+    "invalid_language": "Unsupported language code",
+    "default_not_in_supported": "Default language must be in the supported languages list"
+  },
+  "list": {
+    "get_success": "Tenant list retrieved successfully",
+    "get_failed": "Failed to retrieve tenant list"
+  },
+  "users": {
+    "list_success": "Tenant user list retrieved successfully",
+    "list_failed": "Failed to retrieve tenant user list",
+    "assign_success": "User assigned to tenant successfully",
+    "assign_failed": "Failed to assign user to tenant",
+    "remove_success": "User removed from tenant successfully",
+    "remove_failed": "Failed to remove user from tenant"
+  },
+  "statistics": {
+    "get_success": "Tenant statistics retrieved successfully",
+    "get_failed": "Failed to retrieve tenant statistics"
+  },
+  "validation": {
+    "name_required": "Tenant name is required",
+    "name_invalid": "Invalid tenant name format",
+    "name_too_long": "Tenant name cannot exceed {max} characters",
+    "description_too_long": "Tenant description cannot exceed {max} characters",
+    "language_code_invalid": "Invalid language code format",
+    "supported_languages_empty": "Supported languages list cannot be empty"
+  },
+  "errors": {
+    "not_found": "Tenant not found",
+    "already_exists": "Tenant name already exists",
+    "permission_denied": "Permission denied to access this tenant",
+    "has_users": "Cannot delete tenant, associated users exist",
+    "has_workspaces": "Cannot delete tenant, associated workspaces exist",
+    "already_active": "Tenant is already active",
+    "already_inactive": "Tenant is already inactive"
+  }
+}

api/app/locales/en/users.json

@@ -0,0 +1,72 @@
+{
+  "info": {
+    "get_success": "User information retrieved successfully",
+    "get_failed": "Failed to retrieve user information",
+    "update_success": "User information updated successfully",
+    "update_failed": "Failed to update user information"
+  },
+  "create": {
+    "success": "User created successfully",
+    "failed": "Failed to create user",
+    "superuser_success": "Superuser created successfully",
+    "superuser_failed": "Failed to create superuser"
+  },
+  "delete": {
+    "success": "User deleted successfully",
+    "failed": "Failed to delete user",
+    "deactivate_success": "User deactivated successfully",
+    "deactivate_failed": "Failed to deactivate user"
+  },
+  "activate": {
+    "success": "User activated successfully",
+    "failed": "Failed to activate user"
+  },
+  "language": {
+    "get_success": "Language preference retrieved successfully",
+    "get_failed": "Failed to retrieve language preference",
+    "update_success": "Language preference updated successfully",
+    "update_failed": "Failed to update language preference",
+    "invalid_language": "Unsupported language code",
+    "current": "Current language preference"
+  },
+  "email": {
+    "change_success": "Email changed successfully",
+    "change_failed": "Failed to change email",
+    "code_sent": "Verification code has been sent to your email",
+    "code_send_failed": "Failed to send verification code",
+    "code_invalid": "Invalid or expired verification code",
+    "already_exists": "Email already in use"
+  },
+  "list": {
+    "get_success": "User list retrieved successfully",
+    "get_failed": "Failed to retrieve user list",
+    "superusers_success": "Tenant superuser list retrieved successfully",
+    "superusers_failed": "Failed to retrieve tenant superuser list"
+  },
+  "validation": {
+    "username_required": "Username is required",
+    "username_invalid": "Invalid username format",
+    "username_too_long": "Username cannot exceed {max} characters",
+    "email_required": "Email is required",
+    "email_invalid": "Invalid email format",
+    "password_required": "Password is required",
+    "password_too_short": "Password must be at least {min} characters",
+    "password_too_long": "Password cannot exceed {max} characters",
+    "old_password_required": "Old password is required",
+    "new_password_required": "New password is required",
+    "verification_code_required": "Verification code is required",
+    "verification_code_invalid": "Invalid verification code format"
+  },
+  "errors": {
+    "not_found": "User not found",
+    "already_exists": "User already exists",
+    "permission_denied": "Permission denied to access this user",
+    "cannot_delete_self": "Cannot delete yourself",
+    "cannot_deactivate_self": "Cannot deactivate yourself",
+    "already_deactivated": "User is already deactivated",
+    "already_activated": "User is already activated",
+    "password_verification_failed": "Password verification failed",
+    "old_password_incorrect": "Old password is incorrect",
+    "same_as_old_password": "New password cannot be the same as old password"
+  }
+}

api/app/locales/en/workspace.json

@@ -0,0 +1,44 @@
+{
+  "list_retrieved": "Workspace list retrieved successfully",
+  "created": "Workspace created successfully",
+  "updated": "Workspace updated successfully",
+  "deleted": "Workspace deleted successfully",
+  "switched": "Workspace switched successfully",
+  "not_found": "Workspace not found or access denied",
+  "already_exists": "Workspace already exists",
+  "permission_denied": "No permission to access this workspace",
+  "name_required": "Workspace name is required",
+  "invalid_name": "Invalid workspace name format",
+  "members": {
+    "list_retrieved": "Workspace members list retrieved successfully",
+    "role_updated": "Member role updated successfully",
+    "deleted": "Member deleted successfully",
+    "not_found": "Member not found",
+    "cannot_remove_self": "Cannot remove yourself",
+    "cannot_remove_last_manager": "Cannot remove the last manager",
+    "already_member": "User is already a workspace member"
+  },
+  "invites": {
+    "created": "Invite created successfully",
+    "list_retrieved": "Invite list retrieved successfully",
+    "validated": "Invite validated successfully",
+    "revoked": "Invite revoked successfully",
+    "accepted": "Invite accepted",
+    "not_found": "Invite not found",
+    "expired": "Invite has expired",
+    "already_used": "Invite has already been used",
+    "invalid_token": "Invalid invite token",
+    "email_required": "Email address is required",
+    "invalid_email": "Invalid email address format"
+  },
+  "storage": {
+    "type_retrieved": "Storage type retrieved successfully",
+    "type_updated": "Storage type updated successfully",
+    "invalid_type": "Invalid storage type"
+  },
+  "models": {
+    "config_retrieved": "Model configuration retrieved successfully",
+    "config_updated": "Model configuration updated successfully",
+    "invalid_config": "Invalid model configuration"
+  }
+}

api/app/locales/zh/README.md

@@ -0,0 +1,26 @@
+# 中文翻译文件
+
+此目录包含中文（简体）的翻译文件。
+
+## 文件结构
+
+- `common.json` - 通用翻译（成功消息、操作、验证）
+- `auth.json` - 认证模块翻译
+- `workspace.json` - 工作空间模块翻译
+- `tenant.json` - 租户模块翻译
+- `errors.json` - 错误消息翻译
+- `enums.json` - 枚举值翻译
+
+## 翻译文件格式
+
+所有翻译文件使用 JSON 格式，支持嵌套结构。
+
+示例：
+```json
+{
+  "success": {
+    "created": "创建成功",
+    "updated": "更新成功"
+  }
+}
+```

api/app/locales/zh/auth.json

@@ -0,0 +1,55 @@
+{
+  "login": {
+    "success": "登录成功",
+    "failed": "登录失败",
+    "invalid_credentials": "用户名或密码错误",
+    "account_locked": "账户已被锁定",
+    "account_disabled": "账户已被禁用"
+  },
+  "logout": {
+    "success": "登出成功",
+    "failed": "登出失败"
+  },
+  "token": {
+    "refresh_success": "token刷新成功",
+    "invalid": "无效的token",
+    "expired": "token已过期",
+    "blacklisted": "token已失效",
+    "invalid_refresh_token": "无效的refresh token",
+    "refresh_token_blacklisted": "Refresh token已失效"
+  },
+  "registration": {
+    "success": "注册成功",
+    "failed": "注册失败",
+    "email_exists": "邮箱已被使用",
+    "username_exists": "用户名已被使用"
+  },
+  "password": {
+    "reset_success": "密码重置成功",
+    "reset_failed": "密码重置失败",
+    "change_success": "密码修改成功",
+    "change_failed": "密码修改失败",
+    "incorrect": "密码错误",
+    "too_weak": "密码强度不够",
+    "mismatch": "两次输入的密码不一致"
+  },
+  "invite": {
+    "invalid": "邀请码无效或已过期",
+    "email_mismatch": "邀请邮箱与登录邮箱不匹配",
+    "accept_success": "接受邀请成功",
+    "accept_failed": "接受邀请失败",
+    "password_verification_failed": "接受邀请失败，密码验证错误",
+    "bind_workspace_success": "绑定工作空间成功",
+    "bind_workspace_failed": "绑定工作空间失败"
+  },
+  "user": {
+    "not_found": "用户不存在",
+    "already_exists": "用户已存在",
+    "created_with_invite": "用户创建成功并已加入工作空间"
+  },
+  "session": {
+    "expired": "会话已过期，请重新登录",
+    "invalid": "无效的会话",
+    "single_session_enabled": "单点登录已启用，其他设备的登录将被注销"
+  }
+}

api/app/locales/zh/common.json

@@ -0,0 +1,132 @@
+{
+  "success": {
+    "created": "创建成功",
+    "updated": "更新成功",
+    "deleted": "删除成功",
+    "retrieved": "获取成功",
+    "saved": "保存成功",
+    "uploaded": "上传成功",
+    "downloaded": "下载成功",
+    "sent": "发送成功",
+    "completed": "完成",
+    "confirmed": "已确认",
+    "cancelled": "已取消",
+    "archived": "已归档",
+    "restored": "已恢复"
+  },
+  "actions": {
+    "create": "创建",
+    "update": "更新",
+    "delete": "删除",
+    "view": "查看",
+    "edit": "编辑",
+    "save": "保存",
+    "cancel": "取消",
+    "confirm": "确认",
+    "submit": "提交",
+    "upload": "上传",
+    "download": "下载",
+    "send": "发送",
+    "search": "搜索",
+    "filter": "筛选",
+    "sort": "排序",
+    "export": "导出",
+    "import": "导入",
+    "refresh": "刷新",
+    "reset": "重置",
+    "back": "返回",
+    "next": "下一步",
+    "previous": "上一步",
+    "finish": "完成",
+    "close": "关闭",
+    "open": "打开",
+    "archive": "归档",
+    "restore": "恢复",
+    "duplicate": "复制",
+    "share": "分享",
+    "invite": "邀请",
+    "remove": "移除",
+    "add": "添加",
+    "select": "选择",
+    "clear": "清除"
+  },
+  "validation": {
+    "required": "{field}不能为空",
+    "invalid_format": "{field}格式不正确",
+    "too_long": "{field}长度不能超过{max}个字符",
+    "too_short": "{field}长度不能少于{min}个字符",
+    "invalid_email": "邮箱格式不正确",
+    "invalid_url": "URL格式不正确",
+    "invalid_phone": "手机号格式不正确",
+    "invalid_date": "日期格式不正确",
+    "invalid_number": "必须是有效的数字",
+    "out_of_range": "{field}必须在{min}和{max}之间",
+    "already_exists": "{field}已存在",
+    "not_found": "{field}不存在",
+    "invalid_value": "{field}的值无效",
+    "password_mismatch": "两次输入的密码不一致",
+    "weak_password": "密码强度不够，请使用更复杂的密码",
+    "invalid_credentials": "用户名或密码错误",
+    "unauthorized": "未授权访问",
+    "forbidden": "没有权限执行此操作",
+    "expired": "{field}已过期",
+    "invalid_token": "无效的令牌",
+    "file_too_large": "文件大小不能超过{max}",
+    "invalid_file_type": "不支持的文件类型",
+    "duplicate": "重复的{field}"
+  },
+  "status": {
+    "active": "活跃",
+    "inactive": "未激活",
+    "pending": "待处理",
+    "processing": "处理中",
+    "completed": "已完成",
+    "failed": "失败",
+    "cancelled": "已取消",
+    "archived": "已归档",
+    "deleted": "已删除",
+    "draft": "草稿",
+    "published": "已发布",
+    "suspended": "已暂停",
+    "expired": "已过期"
+  },
+  "messages": {
+    "loading": "加载中...",
+    "saving": "保存中...",
+    "processing": "处理中...",
+    "uploading": "上传中...",
+    "downloading": "下载中...",
+    "no_data": "暂无数据",
+    "no_results": "没有找到结果",
+    "confirm_delete": "确定要删除吗？此操作不可恢复。",
+    "confirm_action": "确定要执行此操作吗？",
+    "operation_success": "操作成功",
+    "operation_failed": "操作失败",
+    "please_wait": "请稍候...",
+    "try_again": "请重试",
+    "contact_support": "如果问题持续，请联系技术支持"
+  },
+  "pagination": {
+    "page": "第{page}页",
+    "of": "共{total}页",
+    "items": "共{total}条",
+    "per_page": "每页{count}条",
+    "showing": "显示第{from}到第{to}条，共{total}条",
+    "first": "首页",
+    "last": "末页",
+    "next": "下一页",
+    "previous": "上一页"
+  },
+  "time": {
+    "just_now": "刚刚",
+    "minutes_ago": "{count}分钟前",
+    "hours_ago": "{count}小时前",
+    "days_ago": "{count}天前",
+    "weeks_ago": "{count}周前",
+    "months_ago": "{count}个月前",
+    "years_ago": "{count}年前",
+    "today": "今天",
+    "yesterday": "昨天",
+    "tomorrow": "明天"
+  }
+}

api/app/locales/zh/enums.json

@@ -0,0 +1,132 @@
+{
+  "workspace_role": {
+    "owner": "所有者",
+    "manager": "管理员",
+    "member": "成员",
+    "guest": "访客"
+  },
+  "workspace_status": {
+    "active": "活跃",
+    "inactive": "未激活",
+    "archived": "已归档",
+    "suspended": "已暂停",
+    "deleted": "已删除"
+  },
+  "invite_status": {
+    "pending": "待处理",
+    "accepted": "已接受",
+    "rejected": "已拒绝",
+    "revoked": "已撤销",
+    "expired": "已过期"
+  },
+  "user_status": {
+    "active": "活跃",
+    "inactive": "未激活",
+    "suspended": "已暂停",
+    "deleted": "已删除",
+    "pending": "待激活"
+  },
+  "tenant_status": {
+    "active": "活跃",
+    "inactive": "未激活",
+    "suspended": "已暂停",
+    "expired": "已过期",
+    "trial": "试用中"
+  },
+  "file_status": {
+    "uploading": "上传中",
+    "processing": "处理中",
+    "completed": "已完成",
+    "failed": "失败",
+    "deleted": "已删除"
+  },
+  "task_status": {
+    "pending": "待处理",
+    "running": "运行中",
+    "completed": "已完成",
+    "failed": "失败",
+    "cancelled": "已取消",
+    "paused": "已暂停"
+  },
+  "priority": {
+    "low": "低",
+    "medium": "中",
+    "high": "高",
+    "urgent": "紧急"
+  },
+  "visibility": {
+    "public": "公开",
+    "private": "私有",
+    "internal": "内部",
+    "shared": "共享"
+  },
+  "permission": {
+    "read": "读取",
+    "write": "写入",
+    "delete": "删除",
+    "admin": "管理",
+    "owner": "所有者"
+  },
+  "notification_type": {
+    "info": "信息",
+    "warning": "警告",
+    "error": "错误",
+    "success": "成功"
+  },
+  "language": {
+    "zh": "中文（简体）",
+    "en": "English",
+    "ja": "日本語",
+    "ko": "한국어",
+    "fr": "Français",
+    "de": "Deutsch",
+    "es": "Español"
+  },
+  "timezone": {
+    "utc": "UTC",
+    "asia_shanghai": "亚洲/上海",
+    "asia_tokyo": "亚洲/东京",
+    "america_new_york": "美洲/纽约",
+    "europe_london": "欧洲/伦敦"
+  },
+  "date_format": {
+    "short": "短日期",
+    "medium": "中等日期",
+    "long": "长日期",
+    "full": "完整日期"
+  },
+  "sort_order": {
+    "asc": "升序",
+    "desc": "降序"
+  },
+  "filter_operator": {
+    "equals": "等于",
+    "not_equals": "不等于",
+    "contains": "包含",
+    "not_contains": "不包含",
+    "starts_with": "开始于",
+    "ends_with": "结束于",
+    "greater_than": "大于",
+    "less_than": "小于",
+    "greater_or_equal": "大于等于",
+    "less_or_equal": "小于等于",
+    "in": "在列表中",
+    "not_in": "不在列表中",
+    "is_null": "为空",
+    "is_not_null": "不为空"
+  },
+  "log_level": {
+    "debug": "调试",
+    "info": "信息",
+    "warning": "警告",
+    "error": "错误",
+    "critical": "严重"
+  },
+  "api_method": {
+    "get": "GET",
+    "post": "POST",
+    "put": "PUT",
+    "patch": "PATCH",
+    "delete": "DELETE"
+  }
+}

api/app/locales/zh/errors.json

@@ -0,0 +1,138 @@
+{
+  "common": {
+    "internal_error": "服务器内部错误",
+    "network_error": "网络连接错误",
+    "timeout": "请求超时",
+    "service_unavailable": "服务暂时不可用",
+    "bad_request": "请求参数错误",
+    "unauthorized": "未授权访问",
+    "forbidden": "没有权限访问",
+    "not_found": "请求的资源不存在",
+    "method_not_allowed": "不支持的请求方法",
+    "conflict": "资源冲突",
+    "too_many_requests": "请求过于频繁，请稍后再试",
+    "validation_failed": "数据验证失败",
+    "database_error": "数据库操作失败",
+    "file_operation_error": "文件操作失败"
+  },
+  "auth": {
+    "invalid_credentials": "用户名或密码错误",
+    "token_expired": "登录已过期，请重新登录",
+    "token_invalid": "无效的登录令牌",
+    "token_missing": "缺少登录令牌",
+    "unauthorized": "未授权访问",
+    "forbidden": "没有权限执行此操作",
+    "account_locked": "账户已被锁定",
+    "account_disabled": "账户已被禁用",
+    "account_not_verified": "账户未验证",
+    "password_incorrect": "密码错误",
+    "password_too_weak": "密码强度不够",
+    "password_expired": "密码已过期，请修改密码",
+    "email_not_verified": "邮箱未验证",
+    "phone_not_verified": "手机号未验证",
+    "verification_code_invalid": "验证码无效",
+    "verification_code_expired": "验证码已过期",
+    "login_failed": "登录失败",
+    "logout_failed": "登出失败",
+    "session_expired": "会话已过期",
+    "already_logged_in": "已经登录",
+    "not_logged_in": "未登录"
+  },
+  "user": {
+    "not_found": "用户不存在",
+    "already_exists": "用户已存在",
+    "email_already_exists": "邮箱已被使用",
+    "phone_already_exists": "手机号已被使用",
+    "username_already_exists": "用户名已被使用",
+    "invalid_email": "邮箱格式不正确",
+    "invalid_phone": "手机号格式不正确",
+    "invalid_username": "用户名格式不正确",
+    "create_failed": "创建用户失败",
+    "update_failed": "更新用户失败",
+    "delete_failed": "删除用户失败",
+    "cannot_delete_self": "不能删除自己",
+    "cannot_update_self_role": "不能修改自己的角色",
+    "profile_update_failed": "更新个人资料失败",
+    "avatar_upload_failed": "上传头像失败",
+    "password_change_failed": "修改密码失败",
+    "old_password_incorrect": "原密码错误"
+  },
+  "workspace": {
+    "not_found": "工作空间不存在",
+    "already_exists": "工作空间已存在",
+    "name_required": "工作空间名称不能为空",
+    "name_too_long": "工作空间名称过长",
+    "create_failed": "创建工作空间失败",
+    "update_failed": "更新工作空间失败",
+    "delete_failed": "删除工作空间失败",
+    "permission_denied": "没有权限访问此工作空间",
+    "not_member": "不是工作空间成员",
+    "already_member": "已经是工作空间成员",
+    "member_limit_reached": "成员数量已达上限",
+    "cannot_leave_last_manager": "不能离开，您是最后一个管理员",
+    "cannot_remove_last_manager": "不能移除最后一个管理员",
+    "cannot_remove_self": "不能移除自己",
+    "invite_not_found": "邀请不存在",
+    "invite_expired": "邀请已过期",
+    "invite_already_accepted": "邀请已被接受",
+    "invite_already_revoked": "邀请已被撤销",
+    "invite_send_failed": "发送邀请失败",
+    "archived": "工作空间已归档",
+    "suspended": "工作空间已暂停"
+  },
+  "tenant": {
+    "not_found": "租户不存在",
+    "already_exists": "租户已存在",
+    "create_failed": "创建租户失败",
+    "update_failed": "更新租户失败",
+    "delete_failed": "删除租户失败",
+    "suspended": "租户已暂停",
+    "expired": "租户已过期",
+    "license_invalid": "许可证无效",
+    "license_expired": "许可证已过期",
+    "quota_exceeded": "配额已超限"
+  },
+  "file": {
+    "not_found": "文件不存在",
+    "upload_failed": "文件上传失败",
+    "download_failed": "文件下载失败",
+    "delete_failed": "文件删除失败",
+    "too_large": "文件大小超过限制",
+    "invalid_type": "不支持的文件类型",
+    "invalid_format": "文件格式不正确",
+    "corrupted": "文件已损坏",
+    "storage_full": "存储空间已满",
+    "access_denied": "没有权限访问此文件"
+  },
+  "api": {
+    "rate_limit_exceeded": "API调用频率超限",
+    "quota_exceeded": "API调用配额已用完",
+    "invalid_api_key": "无效的API密钥",
+    "api_key_expired": "API密钥已过期",
+    "api_key_revoked": "API密钥已被撤销",
+    "endpoint_not_found": "API端点不存在",
+    "method_not_allowed": "不支持的请求方法",
+    "invalid_request": "无效的请求",
+    "missing_parameter": "缺少必需参数：{param}",
+    "invalid_parameter": "参数无效：{param}"
+  },
+  "database": {
+    "connection_failed": "数据库连接失败",
+    "query_failed": "数据库查询失败",
+    "transaction_failed": "数据库事务失败",
+    "constraint_violation": "数据约束冲突",
+    "duplicate_key": "数据重复",
+    "foreign_key_violation": "外键约束冲突",
+    "deadlock": "数据库死锁"
+  },
+  "validation": {
+    "invalid_input": "输入数据无效",
+    "missing_field": "缺少必需字段：{field}",
+    "invalid_field": "字段无效：{field}",
+    "field_too_long": "字段过长：{field}",
+    "field_too_short": "字段过短：{field}",
+    "invalid_format": "格式不正确：{field}",
+    "invalid_value": "值无效：{field}",
+    "out_of_range": "值超出范围：{field}"
+  }
+}

api/app/locales/zh/i18n.json

@@ -0,0 +1,27 @@
+{
+  "language": {
+    "not_found": "语言 {locale} 不存在",
+    "already_exists": "语言 {locale} 已存在",
+    "add_instructions": "语言 {locale} 验证成功。请在 {dir} 目录下创建翻译文件以完成添加。",
+    "update_instructions": "语言 {locale} 更新验证成功。请更新环境变量 I18N_SUPPORTED_LANGUAGES 以应用配置更改。"
+  },
+  "namespace": {
+    "not_found": "命名空间 {namespace} 在语言 {locale} 中不存在"
+  },
+  "translation": {
+    "invalid_key_format": "翻译键格式无效: {key}。应使用格式: namespace.key.subkey",
+    "update_instructions": "翻译 {locale}/{key} 更新验证成功。请修改对应的 JSON 翻译文件以应用更改。"
+  },
+  "reload": {
+    "disabled": "翻译热重载功能已禁用。请在配置中启用 I18N_ENABLE_HOT_RELOAD。",
+    "success": "翻译重载成功",
+    "failed": "翻译重载失败: {error}"
+  },
+  "metrics": {
+    "reset_success": "性能指标已重置"
+  },
+  "logs": {
+    "export_success": "缺失翻译已导出到: {file}",
+    "clear_success": "缺失翻译日志已清除"
+  }
+}

api/app/locales/zh/tenant.json

@@ -0,0 +1,63 @@
+{
+  "info": {
+    "get_success": "租户信息获取成功",
+    "get_failed": "租户信息获取失败",
+    "update_success": "租户信息更新成功",
+    "update_failed": "租户信息更新失败"
+  },
+  "create": {
+    "success": "租户创建成功",
+    "failed": "租户创建失败"
+  },
+  "delete": {
+    "success": "租户删除成功",
+    "failed": "租户删除失败"
+  },
+  "status": {
+    "activate_success": "租户启用成功",
+    "activate_failed": "租户启用失败",
+    "deactivate_success": "租户禁用成功",
+    "deactivate_failed": "租户禁用失败"
+  },
+  "language": {
+    "get_success": "租户语言配置获取成功",
+    "get_failed": "租户语言配置获取失败",
+    "update_success": "租户语言配置更新成功",
+    "update_failed": "租户语言配置更新失败",
+    "invalid_language": "不支持的语言代码",
+    "default_not_in_supported": "默认语言必须在支持的语言列表中"
+  },
+  "list": {
+    "get_success": "租户列表获取成功",
+    "get_failed": "租户列表获取失败"
+  },
+  "users": {
+    "list_success": "租户用户列表获取成功",
+    "list_failed": "租户用户列表获取失败",
+    "assign_success": "用户分配到租户成功",
+    "assign_failed": "用户分配到租户失败",
+    "remove_success": "用户从租户移除成功",
+    "remove_failed": "用户从租户移除失败"
+  },
+  "statistics": {
+    "get_success": "租户统计信息获取成功",
+    "get_failed": "租户统计信息获取失败"
+  },
+  "validation": {
+    "name_required": "租户名称不能为空",
+    "name_invalid": "租户名称格式不正确",
+    "name_too_long": "租户名称长度不能超过{max}个字符",
+    "description_too_long": "租户描述长度不能超过{max}个字符",
+    "language_code_invalid": "语言代码格式不正确",
+    "supported_languages_empty": "支持的语言列表不能为空"
+  },
+  "errors": {
+    "not_found": "租户不存在",
+    "already_exists": "租户名称已存在",
+    "permission_denied": "没有权限访问此租户",
+    "has_users": "无法删除租户，存在关联的用户",
+    "has_workspaces": "无法删除租户，存在关联的工作空间",
+    "already_active": "租户已处于激活状态",
+    "already_inactive": "租户已处于禁用状态"
+  }
+}

api/app/locales/zh/users.json

@@ -0,0 +1,72 @@
+{
+  "info": {
+    "get_success": "用户信息获取成功",
+    "get_failed": "用户信息获取失败",
+    "update_success": "用户信息更新成功",
+    "update_failed": "用户信息更新失败"
+  },
+  "create": {
+    "success": "用户创建成功",
+    "failed": "用户创建失败",
+    "superuser_success": "超级管理员创建成功",
+    "superuser_failed": "超级管理员创建失败"
+  },
+  "delete": {
+    "success": "用户删除成功",
+    "failed": "用户删除失败",
+    "deactivate_success": "用户停用成功",
+    "deactivate_failed": "用户停用失败"
+  },
+  "activate": {
+    "success": "用户激活成功",
+    "failed": "用户激活失败"
+  },
+  "language": {
+    "get_success": "语言偏好获取成功",
+    "get_failed": "语言偏好获取失败",
+    "update_success": "语言偏好更新成功",
+    "update_failed": "语言偏好更新失败",
+    "invalid_language": "不支持的语言代码",
+    "current": "当前语言偏好"
+  },
+  "email": {
+    "change_success": "邮箱修改成功",
+    "change_failed": "邮箱修改失败",
+    "code_sent": "验证码已发送到您的邮箱，请查收",
+    "code_send_failed": "验证码发送失败",
+    "code_invalid": "验证码无效或已过期",
+    "already_exists": "该邮箱已被使用"
+  },
+  "list": {
+    "get_success": "用户列表获取成功",
+    "get_failed": "用户列表获取失败",
+    "superusers_success": "租户超管列表获取成功",
+    "superusers_failed": "租户超管列表获取失败"
+  },
+  "validation": {
+    "username_required": "用户名不能为空",
+    "username_invalid": "用户名格式不正确",
+    "username_too_long": "用户名长度不能超过{max}个字符",
+    "email_required": "邮箱不能为空",
+    "email_invalid": "邮箱格式不正确",
+    "password_required": "密码不能为空",
+    "password_too_short": "密码长度不能少于{min}个字符",
+    "password_too_long": "密码长度不能超过{max}个字符",
+    "old_password_required": "旧密码不能为空",
+    "new_password_required": "新密码不能为空",
+    "verification_code_required": "验证码不能为空",
+    "verification_code_invalid": "验证码格式不正确"
+  },
+  "errors": {
+    "not_found": "用户不存在",
+    "already_exists": "用户已存在",
+    "permission_denied": "没有权限访问此用户",
+    "cannot_delete_self": "不能删除自己",
+    "cannot_deactivate_self": "不能停用自己",
+    "already_deactivated": "用户已被停用",
+    "already_activated": "用户已处于激活状态",
+    "password_verification_failed": "密码验证失败",
+    "old_password_incorrect": "旧密码不正确",
+    "same_as_old_password": "新密码不能与旧密码相同"
+  }
+}

api/app/locales/zh/workspace.json

@@ -0,0 +1,44 @@
+{
+  "list_retrieved": "工作空间列表获取成功",
+  "created": "工作空间创建成功",
+  "updated": "工作空间更新成功",
+  "deleted": "工作空间删除成功",
+  "switched": "工作空间切换成功",
+  "not_found": "工作空间不存在或无权访问",
+  "already_exists": "工作空间已存在",
+  "permission_denied": "没有权限访问此工作空间",
+  "name_required": "工作空间名称不能为空",
+  "invalid_name": "工作空间名称格式不正确",
+  "members": {
+    "list_retrieved": "工作空间成员列表获取成功",
+    "role_updated": "成员角色更新成功",
+    "deleted": "成员删除成功",
+    "not_found": "成员不存在",
+    "cannot_remove_self": "不能删除自己",
+    "cannot_remove_last_manager": "不能删除最后一个管理员",
+    "already_member": "用户已经是工作空间成员"
+  },
+  "invites": {
+    "created": "邀请创建成功",
+    "list_retrieved": "邀请列表获取成功",
+    "validated": "邀请验证成功",
+    "revoked": "邀请撤销成功",
+    "accepted": "邀请已接受",
+    "not_found": "邀请不存在",
+    "expired": "邀请已过期",
+    "already_used": "邀请已被使用",
+    "invalid_token": "无效的邀请令牌",
+    "email_required": "邮箱地址不能为空",
+    "invalid_email": "邮箱地址格式不正确"
+  },
+  "storage": {
+    "type_retrieved": "存储类型获取成功",
+    "type_updated": "存储类型更新成功",
+    "invalid_type": "无效的存储类型"
+  },
+  "models": {
+    "config_retrieved": "模型配置获取成功",
+    "config_updated": "模型配置更新成功",
+    "invalid_config": "无效的模型配置"
+  }
+}

api/app/main.py

@@ -92,6 +92,10 @@ app.add_middleware(
     allow_headers=["*"],
 )
 
+# Add i18n language detection middleware
+from app.i18n.middleware import LanguageMiddleware
+app.add_middleware(LanguageMiddleware)
+
 logger.info("FastAPI应用程序启动")
 
 
@@ -129,6 +133,11 @@ from app.core.exceptions import (
 from app.core.sensitive_filter import SensitiveDataFilter
 import traceback
 
+# Import i18n exception support
+from app.i18n.exceptions import I18nException
+from app.i18n.service import get_translation_service
+from pydantic import ValidationError as PydanticValidationError
+
 
 # 处理验证异常
 @app.exception_handler(ValidationException)
@@ -156,6 +165,131 @@ async def validation_exception_handler(request: Request, exc: ValidationExceptio
     )
 
 
+# 处理 i18n 异常（国际化异常）
+@app.exception_handler(I18nException)
+async def i18n_exception_handler(request: Request, exc: I18nException):
+    """
+    处理国际化异常
+    
+    I18nException 已经自动翻译了错误消息，直接返回即可
+    """
+    # 获取当前语言
+    language = getattr(request.state, "language", settings.I18N_DEFAULT_LANGUAGE)
+    
+    # 获取异常详情（已经包含翻译后的消息）
+    detail = exc.detail
+    
+    # 过滤敏感信息
+    if isinstance(detail, dict):
+        filtered_message = SensitiveDataFilter.filter_string(detail.get("message", ""))
+        filtered_detail = {
+            **detail,
+            "message": filtered_message
+        }
+    else:
+        filtered_detail = SensitiveDataFilter.filter_string(str(detail))
+    
+    logger.warning(
+        f"I18n exception: {exc.error_key}",
+        extra={
+            "path": request.url.path,
+            "method": request.method,
+            "error_code": exc.error_code,
+            "error_key": exc.error_key,
+            "language": language,
+            "status_code": exc.status_code,
+            "params": exc.params
+        }
+    )
+    
+    return JSONResponse(
+        status_code=exc.status_code,
+        content={
+            "success": False,
+            **filtered_detail
+        },
+        headers=exc.headers
+    )
+
+
+# 处理 Pydantic 验证错误（国际化支持）
+@app.exception_handler(PydanticValidationError)
+async def pydantic_validation_exception_handler(request: Request, exc: PydanticValidationError):
+    """
+    处理 Pydantic 验证错误，支持国际化
+    """
+    # 获取当前语言
+    language = getattr(request.state, "language", settings.I18N_DEFAULT_LANGUAGE)
+    
+    # 获取翻译服务
+    translation_service = get_translation_service()
+    
+    # 翻译验证错误消息
+    errors = []
+    for error in exc.errors():
+        field = ".".join(str(loc) for loc in error["loc"])
+        error_type = error["type"]
+        
+        # 尝试翻译错误消息
+        if error_type == "value_error.missing":
+            message = translation_service.translate(
+                "errors.validation.missing_field",
+                language,
+                field=field
+            )
+        elif error_type == "value_error.any_str.max_length":
+            message = translation_service.translate(
+                "errors.validation.field_too_long",
+                language,
+                field=field
+            )
+        elif error_type == "value_error.any_str.min_length":
+            message = translation_service.translate(
+                "errors.validation.field_too_short",
+                language,
+                field=field
+            )
+        else:
+            # 使用通用验证错误消息
+            message = translation_service.translate(
+                "errors.validation.invalid_field",
+                language,
+                field=field
+            )
+        
+        errors.append({
+            "field": field,
+            "message": message,
+            "type": error_type
+        })
+    
+    # 翻译主错误消息
+    main_message = translation_service.translate(
+        "errors.common.validation_failed",
+        language
+    )
+    
+    logger.warning(
+        f"Pydantic validation error: {len(errors)} errors",
+        extra={
+            "path": request.url.path,
+            "method": request.method,
+            "language": language,
+            "errors": errors
+        }
+    )
+    
+    return JSONResponse(
+        status_code=422,
+        content={
+            "success": False,
+            "error_code": "VALIDATION_FAILED",
+            "message": main_message,
+            "errors": errors
+        }
+    )
+
+
 # 处理资源不存在异常
 @app.exception_handler(ResourceNotFoundException)
 async def not_found_exception_handler(request: Request, exc: ResourceNotFoundException):
@@ -354,31 +488,69 @@ async def business_exception_handler(request: Request, exc: BusinessException):
     )
 
 
-# 统一异常处理：将HTTPException转换为统一响应结构
+# 统一异常处理：将HTTPException转换为统一响应结构（支持国际化）
 @app.exception_handler(HTTPException)
 async def http_exception_handler(request: Request, exc: HTTPException):
-    """处理HTTP异常"""
-    # 过滤敏感信息
-    filtered_detail = SensitiveDataFilter.filter_string(str(exc.detail))
-
+    """处理HTTP异常，支持国际化"""
+    # 获取当前语言
+    language = getattr(request.state, "language", settings.I18N_DEFAULT_LANGUAGE)
+    
+    # 获取翻译服务
+    translation_service = get_translation_service()
+    
+    # 尝试翻译标准HTTP错误
+    error_key_map = {
+        400: "errors.common.bad_request",
+        401: "errors.common.unauthorized",
+        403: "errors.common.forbidden",
+        404: "errors.common.not_found",
+        405: "errors.common.method_not_allowed",
+        409: "errors.common.conflict",
+        413: "errors.common.payload_too_large",
+        422: "errors.common.validation_failed",
+        429: "errors.common.too_many_requests",
+        500: "errors.common.internal_error",
+        502: "errors.common.bad_gateway",
+        503: "errors.common.service_unavailable",
+        504: "errors.common.gateway_timeout",
+    }
+    
+    # 如果有对应的翻译键，使用翻译
+    if exc.status_code in error_key_map:
+        translated_message = translation_service.translate(
+            error_key_map[exc.status_code],
+            language
+        )
+    else:
+        # 否则过滤原始消息
+        translated_message = SensitiveDataFilter.filter_string(str(exc.detail))
+    
     logger.warning(
-        f"HTTP exception: {filtered_detail}",
+        f"HTTP exception: {translated_message}",
         extra={
             "path": request.url.path,
             "method": request.method,
-            "status_code": exc.status_code
+            "status_code": exc.status_code,
+            "language": language
         }
     )
+    
     return JSONResponse(
         status_code=exc.status_code,
-        content=fail(code=exc.status_code, msg=filtered_detail, error=filtered_detail)
+        content=fail(code=exc.status_code, msg=translated_message, error=exc.detail)
     )
 
 
-# 捕获未处理的异常，返回统一错误结构
+# 捕获未处理的异常，返回统一错误结构（支持国际化）
 @app.exception_handler(Exception)
 async def unhandled_exception_handler(request: Request, exc: Exception):
-    """处理未捕获的异常"""
+    """处理未捕获的异常，支持国际化"""
+    # 获取当前语言
+    language = getattr(request.state, "language", settings.I18N_DEFAULT_LANGUAGE)
+    
+    # 获取翻译服务
+    translation_service = get_translation_service()
+    
     # 记录完整的堆栈跟踪（日志过滤器会自动过滤敏感信息）
     logger.error(
         f"Unhandled exception: {exc}",
@@ -386,6 +558,7 @@ async def unhandled_exception_handler(request: Request, exc: Exception):
             "path": request.url.path,
             "method": request.method,
             "exception_type": type(exc).__name__,
+            "language": language,
             "traceback": traceback.format_exc()
         },
         exc_info=True
@@ -394,7 +567,11 @@ async def unhandled_exception_handler(request: Request, exc: Exception):
     # 生产环境隐藏详细错误信息
     environment = os.getenv("ENVIRONMENT", "development")
     if environment == "production":
-        message = "服务器内部错误，请稍后重试"
+        # 使用翻译的通用错误消息
+        message = translation_service.translate(
+            "errors.common.internal_error",
+            language
+        )
     else:
         # 开发环境也要过滤敏感信息
         message = SensitiveDataFilter.filter_string(str(exc))

api/app/models/agent_app_config_model.py

@@ -31,6 +31,7 @@ class AgentConfig(Base):
     variables = Column(JSON, default=list, nullable=True, comment="变量配置")
     tools = Column(JSON, default=list, nullable=True, comment="工具配置")
     skills = Column(JSON, default=dict, nullable=True, comment="技能配置")
+    features = Column(JSON, default=dict, nullable=True, comment="功能特性配置")
 
     # 多 Agent 相关字段
     agent_role = Column(String(20), comment="Agent 角色: master|sub|standalone")

api/app/models/appshare_model.py

@@ -1,6 +1,6 @@
 import datetime
 import uuid
-from sqlalchemy import Column, DateTime, ForeignKey
+from sqlalchemy import Boolean, Column, DateTime, ForeignKey, String
 from sqlalchemy.dialects.postgresql import UUID
 from app.db import Base
 from sqlalchemy.orm import relationship
@@ -18,6 +18,8 @@ class AppShare(Base):
     source_workspace_id = Column(UUID(as_uuid=True), ForeignKey('workspaces.id'), nullable=False, comment="源工作空间ID")
     target_workspace_id = Column(UUID(as_uuid=True), ForeignKey('workspaces.id'), nullable=False, comment="目标工作空间ID")
     shared_by = Column(UUID(as_uuid=True), ForeignKey('users.id'), nullable=False, comment="分享者用户ID")
+    permission = Column(String, default="readonly", nullable=False, comment="权限模式: readonly | editable")
+    is_active = Column(Boolean, default=True, server_default='true', nullable=False, comment="是否有效，False 表示逻辑删除")
     created_at = Column(DateTime, default=datetime.datetime.now)
     updated_at = Column(DateTime, default=datetime.datetime.now)
 

api/app/models/end_user_model.py

@@ -12,7 +12,8 @@ class EndUser(Base):
     __tablename__ = "end_users"
 
     id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4, nullable=False, index=True)
-    app_id = Column(UUID(as_uuid=True), ForeignKey("apps.id"), nullable=False)
+    app_id = Column(UUID(as_uuid=True), ForeignKey("apps.id"), nullable=True)
+    workspace_id = Column(UUID(as_uuid=True), ForeignKey("workspaces.id"), nullable=False)
     # end_user_id = Column(String, nullable=False, index=True)
     other_id = Column(String, nullable=True)  # Store original user_id
     other_name = Column(String, default="", nullable=False)
@@ -61,4 +62,7 @@ class EndUser(Base):
     app = relationship(
         "App",
         back_populates="end_users"
-    )
+    )
+
+    # 与 WorkSpace 的反向关系
+    workspace = relationship("Workspace", back_populates="end_users")

api/app/models/memory_perceptual_model.py

@@ -7,6 +7,7 @@ from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.dialects.postgresql import JSONB
 
 from app.db import Base
+from app.schemas import FileType
 
 
 class PerceptualType(IntEnum):
@@ -15,6 +16,16 @@ class PerceptualType(IntEnum):
     TEXT = 3
     CONVERSATION = 4
 
+    @staticmethod
+    def trans_from_file_type(file_type: FileType | str):
+        type_map = {
+            FileType.IMAGE: PerceptualType.VISION,
+            FileType.AUDIO: PerceptualType.AUDIO,
+            FileType.VIDEO: PerceptualType.VISION,
+            FileType.DOCUMENT: PerceptualType.TEXT
+        }
+        return type_map.get(file_type, PerceptualType.TEXT)
+
 
 class FileStorageService(IntEnum):
     LOCAL = 1

api/app/models/tenant_model.py

@@ -1,7 +1,7 @@
 import datetime
 import uuid
-from sqlalchemy import Column, String, DateTime, Boolean
-from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy import Column, String, DateTime, Boolean, text
+from sqlalchemy.dialects.postgresql import UUID, ARRAY
 from sqlalchemy.orm import relationship
 from app.db import Base
 
@@ -20,6 +20,10 @@ class Tenants(Base):
     external_id = Column(String(100), nullable=True, index=True)  # 外部企业ID
     external_source = Column(String(50), nullable=True)  # 来源系统
     
+    # 国际化语言配置字段
+    default_language = Column(String(10), nullable=False, default='zh', server_default='zh', index=True)  # 租户默认语言
+    supported_languages = Column(ARRAY(String(10)), nullable=False, default=lambda: ['zh', 'en'], server_default=text("'{zh,en}'"))  # 租户支持的语言列表
+    
     # Relationship to users - one tenant has many users
     users = relationship("User", back_populates="tenant")
     

api/app/models/tool_model.py

@@ -110,7 +110,10 @@ class ToolConfig(Base):
     # 元数据
     version = Column(String(50), default="1.0.0")
     tags = Column(JSON, default=list)  # 标签列表
-    
+
+    # 逻辑删除标志
+    is_active = Column(Boolean, default=True, server_default='true', nullable=False, index=True, comment="是否可用，False表示已删除")
+
     # 时间戳
     created_at = Column(DateTime, default=datetime.now, nullable=False)
     updated_at = Column(DateTime, default=datetime.now, onupdate=datetime.now, nullable=False)

api/app/models/user_model.py

@@ -1,6 +1,6 @@
 import datetime
 import uuid
-from sqlalchemy import Column, String, Boolean, DateTime, ForeignKey
+from sqlalchemy import Column, String, Boolean, DateTime, ForeignKey, text
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.orm import relationship
 from app.db import Base
@@ -22,6 +22,9 @@ class User(Base):
     external_id = Column(String(100), nullable=True)  # 外部用户ID
     external_source = Column(String(50), nullable=True)  # 来源系统
     
+    # 用户语言偏好
+    preferred_language = Column(String(10), server_default=text("'zh'"), default='zh', nullable=False, index=True)  # 用户偏好语言，默认中文
+    
     current_workspace_id = Column(UUID(as_uuid=True), ForeignKey("workspaces.id"), nullable=True)  # 当前工作空间ID，可为空
     
     # Foreign key to tenant - each user belongs to exactly one tenant

api/app/models/workflow_model.py

@@ -35,6 +35,7 @@ class WorkflowConfig(Base):
     
     # 执行配置
     execution_config = Column(JSONB, nullable=False, default=dict)
+    features = Column(JSONB, nullable=True, default=dict)
     
     # 触发器配置（可选）
     triggers = Column(JSONB, default=list)

api/app/models/workspace_model.py

@@ -38,6 +38,7 @@ class Workspace(Base):
     members = relationship("WorkspaceMember", back_populates="workspace")  # users collaborate through membership
     api_keys = relationship("ApiKey", back_populates="workspace", cascade="all, delete-orphan")  # API Keys
     memory_increments = relationship("MemoryIncrement", back_populates="workspace")
+    end_users = relationship("EndUser", back_populates="workspace", cascade="all, delete-orphan")
 
 class WorkspaceMember(Base):
     __tablename__ = "workspace_members"

api/app/repositories/conversation_repository.py

@@ -90,27 +90,27 @@ class ConversationRepository:
             self,
             user_id: uuid.UUID,
             workspace_id: uuid.UUID = None,
-            limit: int = 10,
-            is_activate: bool = True
-    ) -> list[Conversation]:
+            is_activate: bool = True,
+            page: int = 1,
+            page_size: int = 20
+    ) -> tuple[list[Conversation], int]:
         """
-        Retrieve recent conversations for a specific user.
+        Retrieve recent conversations for a specific user with pagination.
 
         This method queries conversations associated with the given user ID,
         optionally scoped to a specific workspace. Results are ordered by the
-        most recently updated conversations and limited to a fixed number.
+        most recently updated conversations.
 
         Args:
             user_id (uuid.UUID): Unique identifier of the user.
             workspace_id (uuid.UUID, optional): Workspace scope for the query.
                 If provided, only conversations under this workspace will be returned.
-            limit (int): Maximum number of conversations to return.
-                Defaults to 10.
-            is_activate (bool): Convsersation State limit
+            is_activate (bool): Conversation State limit.
+            page (int): Page number (1-based). Defaults to 1.
+            page_size (int): Number of items per page. Defaults to 20.
 
         Returns:
-            list[Conversation]: A list of conversation entities ordered by
-            last updated time (descending).
+            tuple[list[Conversation], int]: A list of conversation entities and total count.
         """
         logger.info(f"Fetching conversation by user_id: {user_id}")
 
@@ -122,18 +122,25 @@ class ConversationRepository:
         if workspace_id:
             stmt = stmt.where(Conversation.workspace_id == workspace_id)
 
-        stmt = stmt.order_by(desc(Conversation.updated_at))
-        stmt = stmt.limit(limit)
+        # Calculate total count
+        total = int(self.db.execute(
+            select(func.count()).select_from(stmt.subquery())
+        ).scalar_one())
 
-        convsersations = list(self.db.scalars(stmt).all())
+        # Apply ordering and pagination
+        stmt = stmt.order_by(desc(Conversation.updated_at))
+        stmt = stmt.offset((page - 1) * page_size).limit(page_size)
+
+        conversations = list(self.db.scalars(stmt).all())
         logger.info(
             "Conversation fetched successfully",
             extra={
                 "user_id": str(user_id),
                 "workspace_id": str(workspace_id),
+                "total": total,
             }
         )
-        return convsersations
+        return conversations, total
 
     def list_conversations(
             self,

api/app/repositories/end_user_repository.py

@@ -32,6 +32,21 @@ class EndUserRepository:
             db_logger.error(f"查询应用 {app_id} 下宿主时出错: {str(e)}")
             raise
 
+    def get_end_users_by_workspace(self, workspace_id: uuid.UUID) -> List[EndUser]:
+        """获取指定 workspace 下的所有 end_user"""
+        try:
+            end_users = (
+                self.db.query(EndUser)
+                .filter(EndUser.workspace_id == workspace_id)
+                .all()
+            )
+            db_logger.info(f"成功查询工作空间 {workspace_id} 下的 {len(end_users)} 个终端用户")
+            return end_users
+        except Exception as e:
+            self.db.rollback()
+            db_logger.error(f"查询工作空间 {workspace_id} 下终端用户时出错: {str(e)}")
+            raise
+
     def get_end_user_by_id(self, end_user_id: uuid.UUID) -> Optional[EndUser]:
         """根据 end_user_id 查询宿主"""
         try:
@@ -51,8 +66,9 @@ class EndUserRepository:
             raise
 
     def get_or_create_end_user(
-        self, 
-        app_id: uuid.UUID, 
+        self,
+        app_id: uuid.UUID,
+        workspace_id: uuid.UUID,
         other_id: str,
         original_user_id: Optional[str] = None
     ) -> EndUser:
@@ -60,6 +76,7 @@ class EndUserRepository:
         
         Args:
             app_id: 应用ID
+            workspace_id: 工作空间ID
             other_id: 第三方ID
             original_user_id: 原始用户ID (存储到 other_id)
         """
@@ -68,26 +85,31 @@ class EndUserRepository:
             end_user = (
                 self.db.query(EndUser)
                 .filter(
-                    EndUser.app_id == app_id,
+                    EndUser.workspace_id == workspace_id,
                     EndUser.other_id == other_id
                 )
+                .order_by(EndUser.created_at.asc())
                 .first()
             )
             
             if end_user:
-                db_logger.debug(f"找到现有终端用户: 应用ID {app_id}、第三方ID {other_id}")
+                db_logger.debug(f"找到现有终端用户: 应用ID {workspace_id}、第三方ID {other_id}")
+                end_user.app_id=app_id
+                self.db.commit()
+                self.db.refresh(end_user)
                 return end_user
             
             # 创建新用户
             end_user = EndUser(
                 app_id=app_id,
+                workspace_id=workspace_id,
                 other_id=other_id
             )
             self.db.add(end_user)
             self.db.commit()
             self.db.refresh(end_user)
             
-            db_logger.info(f"创建新终端用户: (other_id: {other_id}) for app {app_id}")
+            db_logger.info(f"创建新终端用户: (other_id: {other_id}) for workspace {workspace_id}")
             return end_user
             
         except Exception as e:
@@ -314,8 +336,7 @@ class EndUserRepository:
         try:
             end_users = (
                 self.db.query(EndUser)
-                .join(App, EndUser.app_id == App.id)
-                .filter(App.workspace_id == workspace_id)
+                .filter(EndUser.workspace_id == workspace_id)
                 .all()
             )
             db_logger.info(f"成功查询工作空间 {workspace_id} 下的 {len(end_users)} 个终端用户")
@@ -402,45 +423,79 @@ class EndUserRepository:
             db_logger.error(f"获取终端用户 {end_user_id} 的 memory_config_id 时出错: {str(e)}")
             raise
 
-    def batch_update_memory_config_id(
-        self,
-        app_id: uuid.UUID,
-        memory_config_id: uuid.UUID
+    # def batch_update_memory_config_id(
+    #     self,
+    #     app_id: uuid.UUID,
+    #     memory_config_id: uuid.UUID
+    # ) -> int:
+    #     """批量更新应用下所有终端用户的 memory_config_id
+    #
+    #     Args:
+    #         app_id: 应用ID
+    #         memory_config_id: 新的记忆配置ID
+    #
+    #     Returns:
+    #         int: 更新的行数
+    #     """
+    #     try:
+    #         from sqlalchemy import update
+    #
+    #         stmt = (
+    #             update(EndUser)
+    #             .where(EndUser.app_id == app_id)
+    #             .values(memory_config_id=memory_config_id)
+    #         )
+    #
+    #         result = self.db.execute(stmt)
+    #         self.db.commit()
+    #
+    #         updated_count = result.rowcount
+    #
+    #         db_logger.info(
+    #             f"批量更新终端用户记忆配置: app_id={app_id}, "
+    #             f"memory_config_id={memory_config_id}, updated_count={updated_count}"
+    #         )
+    #
+    #         return updated_count
+    #
+    #     except Exception as e:
+    #         self.db.rollback()
+    #         db_logger.error(
+    #             f"批量更新终端用户记忆配置时出错: app_id={app_id}, "
+    #             f"memory_config_id={memory_config_id}, error={str(e)}"
+    #         )
+    #         raise
+
+    def batch_update_memory_config_id_by_workspace(
+            self,
+            workspace_id: uuid.UUID,
+            memory_config_id: uuid.UUID
     ) -> int:
-        """批量更新应用下所有终端用户的 memory_config_id
-        
-        Args:
-            app_id: 应用ID
-            memory_config_id: 新的记忆配置ID
-            
-        Returns:
-            int: 更新的行数
-        """
+        """批量更新工作空间下所有终端用户的 memory_config_id"""
         try:
             from sqlalchemy import update
             
             stmt = (
                 update(EndUser)
-                .where(EndUser.app_id == app_id)
+                .where(EndUser.workspace_id == workspace_id)
                 .values(memory_config_id=memory_config_id)
             )
-            
+
             result = self.db.execute(stmt)
             self.db.commit()
-            
+
             updated_count = result.rowcount
-            
+
             db_logger.info(
-                f"批量更新终端用户记忆配置: app_id={app_id}, "
+                f"批量更新终端用户记忆配置: workspace_id={workspace_id}, "
                 f"memory_config_id={memory_config_id}, updated_count={updated_count}"
             )
-            
+
             return updated_count
-            
         except Exception as e:
             self.db.rollback()
             db_logger.error(
-                f"批量更新终端用户记忆配置时出错: app_id={app_id}, "
+                f"批量更新终端用户记忆配置时出错: workspace_id={workspace_id}, "
                 f"memory_config_id={memory_config_id}, error={str(e)}"
             )
             raise
@@ -492,7 +547,7 @@ class EndUserRepository:
         """
         try:
             from sqlalchemy import update
-            
+
             stmt = (
                 update(EndUser)
                 .where(EndUser.memory_config_id == memory_config_id)
@@ -519,10 +574,16 @@ class EndUserRepository:
             )
             raise
 
-def get_end_users_by_app_id(db: Session, app_id: uuid.UUID) -> List[EndUser]:
-    """根据应用ID查询宿主（返回 EndUser ORM 列表）"""
+# def get_end_users_by_app_id(db: Session, app_id: uuid.UUID) -> List[EndUser]:
+#     """根据应用ID查询宿主（返回 EndUser ORM 列表）"""
+#     repo = EndUserRepository(db)
+#     end_users = repo.get_end_users_by_app_id(app_id)
+#     return end_users
+
+def get_end_users_by_workspace(db: Session, workspace_id: uuid.UUID) -> List[EndUser]:
+    """根据工作空间ID查询终端用户（返回 EndUser ORM 列表）"""
     repo = EndUserRepository(db)
-    end_users = repo.get_end_users_by_app_id(app_id)
+    end_users = repo.get_end_users_by_workspace(workspace_id)
     return end_users
 
 def get_end_user_by_id(db: Session, end_user_id: uuid.UUID) -> Optional[EndUser]:

api/app/repositories/implicit_emotions_storage_repository.py

@@ -5,7 +5,7 @@ Implicit Emotions Storage Repository
 事务由调用方控制，仓储层只使用 flush/refresh
 """
 import logging
-from datetime import date, datetime, timedelta, timezone
+from datetime import date, datetime, timezone
 from typing import Generator, Optional
 
 
@@ -177,22 +177,21 @@ class ImplicitEmotionsStorageRepository:
                     if raw is None:
                         continue
                     try:
-                        CST = timezone(timedelta(hours=8))
                         last_done = datetime.fromisoformat(raw)
-                        # last_done 写入时已是 CST naive，直接使用，无需转换
-                        if last_done.tzinfo is not None:
-                            last_done = last_done.astimezone(CST).replace(tzinfo=None)
+                        # last_done 写入时已是 UTC aware（+00:00），确保有 tzinfo
+                        if last_done.tzinfo is None:
+                            last_done = last_done.replace(tzinfo=timezone.utc)
 
                         if updated_at is None:
                             yield end_user_id
                             continue
-                        # updated_at 数据库存的是 UTC naive，转为 CST naive 再比较
+                        # updated_at 数据库存的是 UTC naive，补上 UTC tzinfo 再比较
                         if updated_at.tzinfo is None:
-                            updated_at_cst = updated_at.replace(tzinfo=timezone.utc).astimezone(CST).replace(tzinfo=None)
+                            updated_at_utc = updated_at.replace(tzinfo=timezone.utc)
                         else:
-                            updated_at_cst = updated_at.astimezone(CST).replace(tzinfo=None)
+                            updated_at_utc = updated_at.astimezone(timezone.utc)
 
-                        if last_done > updated_at_cst:
+                        if last_done > updated_at_utc:
                             yield end_user_id
                     except Exception as e:
                         logger.warning(f"解析 last_done 时间戳失败: end_user_id={end_user_id}, raw={raw}, error={e}")

api/app/repositories/knowledge_repository.py

@@ -111,6 +111,20 @@ def get_knowledge_by_id(db: Session, knowledge_id: uuid.UUID) -> Knowledge | Non
         raise
 
 
+def get_knowledges_by_parent_id(db: Session, parent_id: uuid.UUID) -> list[Knowledge]:
+    db_logger.debug(f"Query knowledge bases based on parent ID: parent_id={parent_id}")
+    try:
+        knowledges = db.query(Knowledge).filter(Knowledge.parent_id == parent_id).all()
+        if knowledges:
+            db_logger.debug(f"Knowledge bases query successful: count={len(knowledges)} (parent_id: {parent_id})")
+        else:
+            db_logger.debug(f"No knowledge bases found for given parent: parent_id={parent_id}")
+        return knowledges
+    except Exception as e:
+        db_logger.error(f"Failed to query the knowledge bases based on parent ID: parent_id={parent_id} - {str(e)}")
+        raise
+
+
 def get_knowledge_by_name(db: Session, name: str, workspace_id: uuid.UUID) -> Knowledge | None:
     db_logger.debug(f"Query knowledge base based on name and workspace_id: name={name}, workspace_id={workspace_id}")