diff --git a/api/app/controllers/app_controller.py b/api/app/controllers/app_controller.py
index 6c0440b8..8374680b 100644
--- a/api/app/controllers/app_controller.py
+++ b/api/app/controllers/app_controller.py
@@ -674,7 +674,8 @@ async def draft_run_compare(
         workspace_id=workspace_id,
         user=current_user
     )
-    if storage_type is None: storage_type = 'neo4j'
+    if storage_type is None: 
+        storage_type = 'neo4j'
     user_rag_memory_id = ''
     if workspace_id:
         knowledge = knowledge_repository.get_knowledge_by_name(
@@ -682,7 +683,8 @@ async def draft_run_compare(
             name="USER_RAG_MERORY",
             workspace_id=workspace_id
         )
-        if knowledge: user_rag_memory_id = str(knowledge.id)
+        if knowledge: 
+            user_rag_memory_id = str(knowledge.id)
 
     logger.info(
         "多模型对比试运行",
diff --git a/api/app/controllers/public_share_controller.py b/api/app/controllers/public_share_controller.py
index 27884b92..e2e5a250 100644
--- a/api/app/controllers/public_share_controller.py
+++ b/api/app/controllers/public_share_controller.py
@@ -1,31 +1,23 @@
-from fastapi import APIRouter, Depends, Query, Request, Header
+import hashlib
+import uuid
+
+from fastapi import APIRouter, Depends, Query, Request
 from fastapi.responses import StreamingResponse
 from sqlalchemy.orm import Session
-import uuid
-import hashlib
-import time
-import jwt
-from app.services import task_service, workspace_service
-from typing import Optional, Dict
-from functools import wraps
-from app.dependencies import get_current_superuser, get_current_user, get_current_tenant, workspace_access_guard, cur_workspace_access_guard
-from app.db import get_db
-from app.core.response_utils import success
+
 from app.core.logging_config import get_business_logger
-from app.core.exceptions import BusinessException
-from app.core.error_codes import BizCode
-from app.core.config import settings
+from app.core.response_utils import success
+from app.db import get_db
+from app.dependencies import get_share_user_id, ShareTokenData
+from app.repositories import knowledge_repository
 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.auth_service import create_access_token
+from app.services.conversation_service import ConversationService
 from app.services.release_share_service import ReleaseShareService
 from app.services.shared_chat_service import SharedChatService
-from app.services.conversation_service import ConversationService
-from app.services.auth_service import create_access_token
-from app.dependencies import get_share_user_id, ShareTokenData
-from app.models.user_model import User
-from app.repositories.app_repository import AppRepository
-from app.repositories.workspace_repository import WorkspaceRepository
-from app.repositories import knowledge_repository
+
 router = APIRouter(prefix="/public/share", tags=["Public Share"])
 logger = get_business_logger()
 
@@ -37,31 +29,31 @@ def get_base_url(request: Request) -> str:
 
 def get_or_generate_user_id(payload_user_id: str, request: Request) -> str:
     """获取或生成用户 ID
-    
+
     优先级：
     1. 使用前端传递的 user_id
     2. 基于 IP + User-Agent 生成唯一 ID
-    
+
     Args:
         payload_user_id: 前端传递的 user_id
         request: FastAPI Request 对象
-        
+
     Returns:
         用户 ID
     """
     if payload_user_id:
         return payload_user_id
-    
+
     # 获取客户端 IP
     client_ip = request.client.host if request.client else "unknown"
-    
+
     # 获取 User-Agent
     user_agent = request.headers.get("user-agent", "unknown")
-    
+
     # 生成唯一 ID：基于 IP + User-Agent 的哈希
     unique_string = f"{client_ip}_{user_agent}"
     hash_value = hashlib.md5(unique_string.encode()).hexdigest()[:16]
-    
+
     return f"guest_{hash_value}"
 
 
@@ -76,13 +68,13 @@ def get_access_token(
     db: Session = Depends(get_db),
 ):
     """获取访问 token
-    
+
     - 用户通过 user_id + share_token 换取访问 token
     - 后续请求需要携带此 token
     """
     # 获取或生成 user_id
     user_id = get_or_generate_user_id(payload.user_id, request)
-    
+
     # 验证分享链接（可选：验证密码）
     service = ReleaseShareService(db)
     try:
@@ -93,10 +85,10 @@ def get_access_token(
     except Exception as e:
         logger.error(f"获取分享信息失败: {str(e)}")
         raise
-    
+
     # 生成 token
     access_token = create_access_token(user_id, share_token)
-    
+
     logger.info(
         "生成访问 token",
         extra={
@@ -104,7 +96,7 @@ def get_access_token(
             "user_id": user_id
         }
     )
-    
+
     return success(data={
         "access_token": access_token,
         "token_type": "Bearer",
@@ -123,7 +115,7 @@ def get_shared_release(
     db: Session = Depends(get_db),
 ):
     """获取公开分享的发布版本信息
-    
+
     - 无需认证即可访问
     - 如果设置了密码保护，需要提供正确的密码
     - 如果密码错误或未提供密码，返回基本信息（不含配置详情）
@@ -133,7 +125,7 @@ def get_shared_release(
         share_token=share_data.share_token,
         password=password
     )
-    
+
     return success(data=info)
 
 
@@ -147,7 +139,7 @@ def verify_password(
     db: Session = Depends(get_db),
 ):
     """验证分享的访问密码
-    
+
     - 用于前端先验证密码，再获取完整信息
     """
     service = ReleaseShareService(db)
@@ -155,7 +147,7 @@ def verify_password(
         share_token=share_data.share_token,
         password=payload.password
     )
-    
+
     return success(data={"valid": is_valid})
 
 
@@ -163,7 +155,7 @@ def verify_password(
     "/embed",
     summary="获取嵌入代码"
 )
-def get_embed_code(    
+def get_embed_code(
     width: str = Query("100%", description="iframe 宽度"),
     height: str = Query("600px", description="iframe 高度"),
     request: Request = None,
@@ -171,12 +163,12 @@ def get_embed_code(
     db: Session = Depends(get_db),
 ):
     """获取嵌入代码
-    
+
     - 返回 iframe 嵌入代码
     - 可以自定义宽度和高度
     """
     base_url = get_base_url(request) if request else None
-    
+
     service = ReleaseShareService(db)
     embed_code = service.get_embed_code(
         share_token=share_data.share_token,
@@ -184,7 +176,7 @@ def get_embed_code(
         height=height,
         base_url=base_url
     )
-    
+
     return success(data=embed_code)
 
 
@@ -203,7 +195,7 @@ def list_conversations(
     db: Session = Depends(get_db),
 ):
     """获取分享应用的会话列表
-    
+
     - 可以按 user_id 筛选
     - 支持分页
     """
@@ -214,7 +206,7 @@ def list_conversations(
     from app.repositories.end_user_repository import EndUserRepository
     end_user_repo = EndUserRepository(db)
     new_end_user = end_user_repo.get_or_create_end_user(
-            app_id=share.app_id, 
+            app_id=share.app_id,
             other_id=other_id
         )
     logger.debug(new_end_user.id)
@@ -226,10 +218,10 @@ def list_conversations(
         page=page,
         pagesize=pagesize
     )
-    
+
     items = [conversation_schema.Conversation.model_validate(c) for c in conversations]
     meta = PageMeta(page=page, pagesize=pagesize, total=total, hasnext=(page * pagesize) < total)
-    
+
     return success(data=PageData(page=meta, items=items))
 
 
@@ -250,17 +242,17 @@ def get_conversation(
         conversation_id=conversation_id,
         password=password
     )
-    
+
     # 获取消息
     conv_service = ConversationService(db)
     messages = conv_service.get_messages(conversation_id)
-    
+
     # 构建响应
     conv_dict = conversation_schema.Conversation.model_validate(conversation).model_dump()
     conv_dict["messages"] = [
         conversation_schema.Message.model_validate(m) for m in messages
     ]
-    
+
     return success(data=conv_dict)
 
 
@@ -276,17 +268,17 @@ async def chat(
     db: Session = Depends(get_db)
 ):
     """发送消息并获取回复
-    
+
     使用 Bearer token 认证：
     - Header: Authorization: Bearer {token}
     - user_id 和 share_token 从 token 中解码
-    
+
     - 支持多轮对话（提供 conversation_id）
     - 支持流式返回（设置 stream=true）
     - 如果不提供 conversation_id，会自动创建新会话
     """
     service = SharedChatService(db)
-    
+
     # 从依赖中获取 user_id 和 share_token
     user_id = share_data.user_id
     share_token = share_data.share_token
@@ -299,19 +291,19 @@ async def chat(
     from app.models.app_model import AppType
     try:
         from app.core.exceptions import BusinessException
-        from app.core.error_codes import BizCode    
+        from app.core.error_codes import BizCode
         from app.services.app_service import AppService
         # 验证分享链接和密码
         share, release = service._get_release_by_share_token(share_token, password)
-        
+
         # # Create end_user_id by concatenating app_id with user_id
         # end_user_id = f"{share.app_id}_{user_id}"
-        
+
         # Store end_user_id in database with original user_id
         from app.repositories.end_user_repository import EndUserRepository
         end_user_repo = EndUserRepository(db)
         new_end_user = end_user_repo.get_or_create_end_user(
-            app_id=share.app_id, 
+            app_id=share.app_id,
             other_id=other_id,
             original_user_id=user_id  # Save original user_id to other_id
         )
@@ -319,21 +311,21 @@ async def chat(
 
         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
         from app.models.app_model import App
         app = db.query(App).filter(App.id == appid).first()
         if not app:
             raise BusinessException("应用不存在", BizCode.APP_NOT_FOUND)
-        
+
         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(
             db=db,
             workspace_id=workspace_id
         )
-        if storage_type is None: 
+        if storage_type is None:
             storage_type = 'neo4j'
         user_rag_memory_id = ''
 
@@ -357,7 +349,7 @@ async def chat(
 
         # 获取应用类型
         app_type = release.app.type if release.app else None
-        
+
         # 根据应用类型验证配置
         if app_type == "agent":
             # Agent 类型：验证模型配置
@@ -371,7 +363,7 @@ async def chat(
                 raise BusinessException("多 Agent 应用未配置子 Agent", BizCode.AGENT_CONFIG_MISSING)
         else:
             raise BusinessException(f"不支持的应用类型: {app_type}", BizCode.APP_TYPE_NOT_SUPPORTED)
-        
+
         # 获取或创建会话（提前验证）
         conversation = service.create_or_get_conversation(
             share_token=share_data.share_token,
@@ -379,7 +371,7 @@ async def chat(
             user_id=str(new_end_user.id),  # 转换为字符串
             password=password
         )
-        
+
         logger.debug(
             "参数验证完成",
             extra={
@@ -389,12 +381,12 @@ async def chat(
                 "stream": payload.stream
             }
         )
-        
+
     except Exception as e:
         # 验证失败，直接抛出异常（会被 FastAPI 的异常处理器捕获）
         logger.error(f"参数验证失败: {str(e)}")
         raise
-    
+
     if app_type == AppType.AGENT:
         # 流式返回
         if payload.stream:
@@ -412,7 +404,7 @@ async def chat(
                     user_rag_memory_id=user_rag_memory_id
                 ):
                     yield event
-            
+
             return StreamingResponse(
                 event_generator(),
                 media_type="text/event-stream",
@@ -422,7 +414,7 @@ async def chat(
                     "X-Accel-Buffering": "no"
                 }
             )
-        
+
         # 非流式返回
         result = await service.chat(
             share_token=share_token,
@@ -454,7 +446,7 @@ async def chat(
                         user_rag_memory_id=user_rag_memory_id
                 ):
                     yield event
-            
+
             return StreamingResponse(
                 event_generator(),
                 media_type="text/event-stream",
@@ -464,7 +456,7 @@ async def chat(
                     "X-Accel-Buffering": "no"
                 }
             )
-        
+
         # 多 Agent 非流式返回
         result = await service.multi_agent_chat(
             share_token=share_token,
@@ -478,7 +470,7 @@ async def chat(
             storage_type=storage_type,
             user_rag_memory_id=user_rag_memory_id
         )
-        
+
         return success(data=conversation_schema.ChatResponse(**result))
     else:
         from app.core.exceptions import BusinessException
diff --git a/api/app/controllers/service/app_api_controller.py b/api/app/controllers/service/app_api_controller.py
index eb22548f..b2256a98 100644
--- a/api/app/controllers/service/app_api_controller.py
+++ b/api/app/controllers/service/app_api_controller.py
@@ -1,30 +1,28 @@
 """App 服务接口 - 基于 API Key 认证"""
-import uuid
+from typing import Annotated
+
 from fastapi import APIRouter, Depends, Request, Body
 from sqlalchemy.orm import Session
-from typing import Optional, Annotated
-
 from starlette.responses import StreamingResponse
 
 from app.core.api_key_auth import require_api_key
-from app.db import get_db
-from app.core.response_utils import success
+from app.core.error_codes import BizCode
+from app.core.exceptions import BusinessException
 from app.core.logging_config import get_business_logger
+from app.core.response_utils import success
+from app.db import get_db
 from app.dependencies import get_app_or_workspace
-from app.models import AppRelease
-from app.repositories import knowledge_repository
-from app.schemas import AppChatRequest, conversation_schema
 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
-from app.core.exceptions import BusinessException
-from app.core.error_codes import BizCode
+from app.schemas import AppChatRequest, conversation_schema
+from app.schemas.api_key_schema import ApiKeyAuth
 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.conversation_service import ConversationService, get_conversation_service
-from app.services.workflow_service import WorkflowService, get_workflow_service
-from app.utils.app_config_utils import dict_to_multi_agent_config,dict_to_workflow_config,agent_config_4_app_release
+from app.utils.app_config_utils import dict_to_multi_agent_config, dict_to_workflow_config, agent_config_4_app_release
+from app.services.app_service import get_app_service, AppService
 
 router = APIRouter(prefix="/app", tags=["V1 - App API"])
 logger = get_business_logger()
@@ -37,8 +35,9 @@ async def list_apps():
 
 # /v1/apps/{resource_id}/chat
 
-
-# async def chat(
+# @router.post("/chat")
+# @require_api_key(scopes=["app"])
+# async def chat2(
 #     request: Request,
 #     api_key_auth: ApiKeyAuth = None,
 #     db: Session = Depends(get_db),
@@ -57,7 +56,6 @@ async def list_apps():
 #         db: db_session
 #     """
 #     logger.info(f"API Key Auth: {api_key_auth}")
-#     logger.info(f"Resource ID: {resource_id}")
 #     logger.info(f"Message: {message}")
 #     return success(data={"received": True}, msg="消息已接收")
 
@@ -76,15 +74,21 @@ def _checkAppConfig(app: App):
         raise BusinessException("不支持的应用类型", BizCode.AGENT_CONFIG_MISSING)
 
 @router.post("/chat")
-# @require_api_key(scopes=["app"])
+@require_api_key(scopes=["app"])
 async def chat(
-    payload: AppChatRequest,
-    app: App = Depends(get_app_or_workspace),
+    request:Request,
+    api_key_auth: ApiKeyAuth = None,
     db: Session = Depends(get_db),
     conversation_service: Annotated[ConversationService, Depends(get_conversation_service)] = None,
     app_chat_service: Annotated[AppChatService, Depends(get_app_chat_service)] = None,
-
+    app_service: Annotated[AppService, Depends(get_app_service)] = None,
+    message: str = Body(..., description="聊天消息内容"),
 ):
+    body = await request.json()
+    payload = AppChatRequest(**body)
+
+    other_id = payload.user_id
+    app = app_service.get_app(api_key_auth.resource_id, api_key_auth.workspace_id)
     other_id = payload.user_id
     workspace_id = app.workspace_id
     end_user_repo = EndUserRepository(db)
@@ -176,7 +180,7 @@ async def chat(
             storage_type=storage_type,
             user_rag_memory_id=user_rag_memory_id
         )
-        return success(data=conversation_schema.ChatResponse(**result))
+        return success(data=conversation_schema.ChatResponse(**result).model_dump(mode="json"))
     elif app_type == AppType.MULTI_AGENT:
         # 多 Agent 流式返回
         config = dict_to_multi_agent_config(app.current_release.config,app.id)
@@ -220,7 +224,7 @@ async def chat(
             user_rag_memory_id=user_rag_memory_id
         )
 
-        return success(data=conversation_schema.ChatResponse(**result))
+        return success(data=conversation_schema.ChatResponse(**result).model_dump(mode="json"))
     elif app_type == AppType.WORKFLOW:
         # 多 Agent 流式返回
         config = dict_to_workflow_config(app.current_release.config,app.id)
@@ -264,7 +268,7 @@ async def chat(
             user_rag_memory_id=user_rag_memory_id
         )
 
-        return success(data=conversation_schema.ChatResponse(**result))
+        return success(data=conversation_schema.ChatResponse(**result).model_dump(mode="json"))
     else:
         from app.core.exceptions import BusinessException
         from app.core.error_codes import BizCode
diff --git a/api/app/models/multi_agent_model.py b/api/app/models/multi_agent_model.py
index 061ecffa..bdaa0a70 100644
--- a/api/app/models/multi_agent_model.py
+++ b/api/app/models/multi_agent_model.py
@@ -1,26 +1,42 @@
 """多 Agent 相关数据模型"""
 import datetime
 import uuid
+from enum import StrEnum
+
 from sqlalchemy import Column, String, Boolean, DateTime, Integer, Float, Text, ForeignKey
 from sqlalchemy.dialects.postgresql import UUID, JSON
 from sqlalchemy.orm import relationship
 
 from app.db import Base
 
+class OrchestrationMode(StrEnum):
+    """图标类型枚举"""
+    SEQUENTIAL = "sequential"
+    PARALLEL = "parallel"
+    CONDITIONAL = "conditional"
+
+class AggregationStrategy(StrEnum):
+    """图标类型枚举"""
+    MERGE = "merge"
+    VOTE = "vote"
+    PRIORITY = "priority"
 
 class MultiAgentConfig(Base):
     """多 Agent 配置表"""
     __tablename__ = "multi_agent_configs"
 
     id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4, index=True)
-    
+
     # 关联应用
     app_id = Column(UUID(as_uuid=True), ForeignKey("apps.id"), nullable=False, unique=True, index=True, comment="关联应用")
-    
+
     # 主 Agent (存储发布版本 ID)
-    master_agent_id = Column(UUID(as_uuid=True), ForeignKey("app_releases.id"), nullable=False, comment="主 Agent 发布版本 ID")
+    master_agent_id = Column(UUID(as_uuid=True), ForeignKey("app_releases.id"), nullable=True, comment="主 Agent 发布版本 ID")
     master_agent_name = Column(String(100), comment="主 Agent 名称")
-    
+
+    default_model_config_id = Column(UUID(as_uuid=True), ForeignKey("model_configs.id"), nullable=False,server_default=str(uuid.UUID(int=0)), index=True, comment="默认模型配置ID")
+    # 结构化配置（直接存储 JSON）
+    model_parameters = Column(JSON, nullable=True, comment="模型参数配置（temperature、max_tokens等）")
     # 协作模式
     orchestration_mode = Column(
         String(20),
@@ -28,7 +44,7 @@ class MultiAgentConfig(Base):
         default="conditional",
         comment="协作模式: sequential|parallel|conditional|loop"
     )
-    
+
     # 子 Agent 列表
     sub_agents = Column(
         JSON,
@@ -36,13 +52,13 @@ class MultiAgentConfig(Base):
         default=list,
         comment="子 Agent 列表: [{'agent_id': 'uuid', 'name': '...', 'role': '...', 'priority': 1}]"
     )
-    
+
     # 路由规则
     routing_rules = Column(
         JSON,
         comment="路由规则: [{'condition': '...', 'target_agent_id': 'uuid', 'priority': 1}]"
     )
-    
+
     # 执行配置
     execution_config = Column(
         JSON,
@@ -50,7 +66,7 @@ class MultiAgentConfig(Base):
         default=dict,
         comment="执行配置: {'max_iterations': 5, 'timeout': 60, 'parallel_limit': 3}"
     )
-    
+
     # 结果整合策略
     aggregation_strategy = Column(
         String(20),
@@ -58,12 +74,12 @@ class MultiAgentConfig(Base):
         default="merge",
         comment="结果整合策略: merge|vote|priority|custom"
     )
-    
+
     # 状态
     is_active = Column(Boolean, default=True, nullable=False)
     created_at = Column(DateTime, default=datetime.datetime.now)
     updated_at = Column(DateTime, default=datetime.datetime.now, onupdate=datetime.datetime.now)
-    
+
     # 关系
     app = relationship("App")
     master_agent_release = relationship("AppRelease", foreign_keys=[master_agent_id])
@@ -77,7 +93,7 @@ class AgentInvocation(Base):
     __tablename__ = "agent_invocations"
 
     id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4, index=True)
-    
+
     # 调用关系
     caller_agent_id = Column(
         UUID(as_uuid=True),
@@ -93,7 +109,7 @@ class AgentInvocation(Base):
         index=True,
         comment="被调用者 Agent ID"
     )
-    
+
     # 关联信息
     conversation_id = Column(
         UUID(as_uuid=True),
@@ -106,12 +122,12 @@ class AgentInvocation(Base):
         index=True,
         comment="父调用 ID（用于追踪调用链）"
     )
-    
+
     # 输入输出
     input_message = Column(Text, nullable=False, comment="输入消息")
     output_message = Column(Text, comment="输出消息")
     context = Column(JSON, comment="上下文信息")
-    
+
     # 状态
     status = Column(
         String(20),
@@ -121,18 +137,18 @@ class AgentInvocation(Base):
         comment="状态: pending|running|completed|failed"
     )
     error_message = Column(Text, comment="错误信息")
-    
+
     # 性能指标
     started_at = Column(DateTime, nullable=False, default=datetime.datetime.now, index=True)
     completed_at = Column(DateTime)
     elapsed_time = Column(Float, comment="耗时（秒）")
     token_usage = Column(JSON, comment="Token 使用情况")
-    
+
     # 元数据
     meta_data = Column(JSON, comment="额外元数据")
-    
+
     created_at = Column(DateTime, default=datetime.datetime.now)
-    
+
     # 关系
     caller = relationship("AgentConfig", foreign_keys=[caller_agent_id])
     callee = relationship("AgentConfig", foreign_keys=[callee_agent_id])
diff --git a/api/app/services/app_service.py b/api/app/services/app_service.py
index 07625fee..1658ef8b 100644
--- a/api/app/services/app_service.py
+++ b/api/app/services/app_service.py
@@ -9,8 +9,9 @@
 """
 import datetime
 import uuid
-from typing import Optional, List, Dict, Any, Tuple, Type
+from typing import Optional, List, Dict, Any, Tuple, Annotated
 
+from fastapi import Depends
 from sqlalchemy import select, func, or_, and_
 from sqlalchemy.orm import Session
 
@@ -20,6 +21,7 @@ from app.core.exceptions import (
     BusinessException,
 )
 from app.core.logging_config import get_business_logger
+from app.db import get_db
 from app.models import App, AgentConfig, AppRelease, MultiAgentConfig, WorkflowConfig
 from app.models.app_model import AppStatus, AppType
 from app.repositories.app_repository import get_apps_by_id
@@ -27,6 +29,7 @@ from app.repositories.workflow_repository import WorkflowConfigRepository
 from app.schemas import app_schema
 from app.schemas.workflow_schema import WorkflowConfigUpdate
 from app.services.agent_config_converter import AgentConfigConverter
+from app.models import AppShare, Workspace
 
 # 获取业务日志器
 logger = get_business_logger()
@@ -1390,7 +1393,7 @@ class AppService:
         target_workspace_ids: List[uuid.UUID],
         user_id: uuid.UUID,
         workspace_id: Optional[uuid.UUID] = None
-    ) -> List["AppShare"]:
+    ) -> AppShare:
         """分享应用到其他工作空间
 
         Args:
@@ -1406,7 +1409,7 @@ class AppService:
             ResourceNotFoundException: 当应用不存在时
             BusinessException: 当应用不在指定工作空间或目标工作空间无效时
         """
-        from app.models import AppShare, Workspace
+
 
         logger.info(
             "分享应用",
@@ -1548,7 +1551,7 @@ class AppService:
         *,
         app_id: uuid.UUID,
         workspace_id: Optional[uuid.UUID] = None
-    ) -> List["AppShare"]:
+    ) -> List[AppShare]:
         """列出应用的所有分享记录
 
         Args:
@@ -2094,3 +2097,14 @@ async def draft_run_stream(
         workspace_id=workspace_id
     ):
         yield event
+
+
+
+
+# ==================== 依赖注入函数 ====================
+
+def get_app_service(
+        db: Annotated[Session, Depends(get_db)]
+) -> AppService:
+    """获取工作流服务（依赖注入）"""
+    return AppService(db)
diff --git a/api/app/services/conversation_service.py b/api/app/services/conversation_service.py
index f618ea17..122d0d87 100644
--- a/api/app/services/conversation_service.py
+++ b/api/app/services/conversation_service.py
@@ -1,16 +1,18 @@
 """会话服务"""
 import uuid
-from typing import Optional, List, Tuple, Annotated
+from typing import Annotated
+from typing import Optional, List, Tuple
 
 from fastapi import Depends
-from sqlalchemy.orm import Session
 from sqlalchemy import select, desc
+from sqlalchemy.orm import Session
 
+from app.core.error_codes import BizCode
+from app.core.exceptions import BusinessException
+from app.core.exceptions import ResourceNotFoundException
+from app.core.logging_config import get_business_logger
 from app.db import get_db
 from app.models import Conversation, Message
-from app.core.exceptions import ResourceNotFoundException, BusinessException
-from app.core.error_codes import BizCode
-from app.core.logging_config import get_business_logger
 
 logger = get_business_logger()
 
diff --git a/api/app/services/workspace_service.py b/api/app/services/workspace_service.py
index 0499a6bf..34ce0610 100644
--- a/api/app/services/workspace_service.py
+++ b/api/app/services/workspace_service.py
@@ -11,31 +11,26 @@ from app.core.exceptions import BusinessException, PermissionDeniedException
 from app.core.logging_config import get_business_logger
 from app.models.user_model import User
 
-# 获取业务逻辑专用日志器
-business_logger = get_business_logger()
-from app.models.workspace_model import (
-    InviteStatus,
-    Workspace,
-    WorkspaceMember,
-    WorkspaceRole,
+from app.schemas.workspace_schema import (
+    WorkspaceModelsUpdate,
 )
+from sqlalchemy.orm import Session
+from app.models.workspace_model import Workspace, WorkspaceRole, InviteStatus, WorkspaceMember
 from app.repositories import workspace_repository
 from app.repositories.workspace_invite_repository import WorkspaceInviteRepository
 from app.schemas.workspace_schema import (
-    InviteAcceptRequest,
-    InviteValidateResponse,
     WorkspaceCreate,
+    WorkspaceUpdate,
     WorkspaceInviteCreate,
     WorkspaceInviteResponse,
-    WorkspaceMemberUpdate,
-    WorkspaceModelsUpdate,
-    WorkspaceUpdate,
+    InviteValidateResponse,
+    InviteAcceptRequest,
+    WorkspaceMemberUpdate
 )
-from dotenv import load_dotenv
-from sqlalchemy.orm import Session
 
 # 获取业务逻辑专用日志器
 business_logger = get_business_logger()
+from dotenv import load_dotenv
 load_dotenv()
 def switch_workspace(
     db: Session,
@@ -329,7 +324,7 @@ def _check_workspace_admin_permission(db: Session, workspace_id: uuid.UUID, user
         )
 
     # 使用统一权限服务检查管理权限
-    from app.core.permissions import Action, Resource, Subject, permission_service
+    from app.core.permissions import permission_service, Subject, Resource, Action
 
     # 获取用户的工作空间成员关系
     member = workspace_repository.get_member_in_workspace(