Merge branch 'develop' into feature/multimodel_memory

# Conflicts:
#	api/app/core/memory/storage_services/extraction_engine/knowledge_extraction/embedding_generation.py
#	api/app/repositories/neo4j/add_nodes.py
#	api/app/repositories/neo4j/cypher_queries.py
#	api/app/repositories/neo4j/graph_saver.py
#	api/app/services/memory_agent_service.py
#	api/app/services/multimodal_service.py

api/app/schemas/app_log_schema.py

@@ -0,0 +1,53 @@
+"""应用日志（消息记录）Schema"""
+import uuid
+import datetime
+from typing import Optional, Dict, Any, List
+
+from pydantic import BaseModel, Field, ConfigDict, field_serializer
+
+
+class AppLogMessage(BaseModel):
+    """单条消息记录"""
+    model_config = ConfigDict(from_attributes=True)
+
+    id: uuid.UUID
+    conversation_id: uuid.UUID
+    role: str = Field(description="角色: user / assistant / system")
+    content: str
+    meta_data: Optional[Dict[str, Any]] = None
+    created_at: datetime.datetime
+
+    @field_serializer("created_at", when_used="json")
+    def _serialize_created_at(self, dt: datetime.datetime):
+        return int(dt.timestamp() * 1000) if dt else None
+
+    @field_serializer("meta_data", when_used="json")
+    def _serialize_meta_data(self, data: Optional[Dict[str, Any]]):
+        return data or {}
+
+
+class AppLogConversation(BaseModel):
+    """会话摘要（用于列表）"""
+    model_config = ConfigDict(from_attributes=True)
+
+    id: uuid.UUID
+    app_id: uuid.UUID
+    user_id: Optional[str] = None
+    title: Optional[str] = None
+    message_count: int = 0
+    is_draft: bool
+    created_at: datetime.datetime
+    updated_at: datetime.datetime
+
+    @field_serializer("created_at", when_used="json")
+    def _serialize_created_at(self, dt: datetime.datetime):
+        return int(dt.timestamp() * 1000) if dt else None
+
+    @field_serializer("updated_at", when_used="json")
+    def _serialize_updated_at(self, dt: datetime.datetime):
+        return int(dt.timestamp() * 1000) if dt else None
+
+
+class AppLogConversationDetail(AppLogConversation):
+    """会话详情（包含消息列表）"""
+    messages: List[AppLogMessage] = Field(default_factory=list)

api/app/schemas/app_schema.py

@@ -149,18 +149,26 @@ class FileUploadConfig(BaseModel):
     )
     # 通用文件：PDF/DOCX/XLSX/TXT/CSV/JSON，最大 100MB
     document_enabled: bool = Field(default=False)
-    document_max_size_mb: int = Field(default=100)
+    document_max_size_mb: int = Field(default=50)
     document_allowed_extensions: List[str] = Field(
-        default=["pdf", "docx", "xlsx", "txt", "csv", "json", "md"]
+        default=["pdf", "docx", "doc", "xlsx", "xls", "txt", "csv", "json", "md"]
     )
     # 视频文件：MP4/MOV/AVI/WebM，最大 500MB
     video_enabled: bool = Field(default=False)
-    video_max_size_mb: int = Field(default=500)
+    video_max_size_mb: int = Field(default=50)
     video_allowed_extensions: List[str] = Field(
-        default=["mp4", "mov"]
+        default=["mp4"]
     )
     # 最大文件数量
-    max_file_count: int = Field(default=5, ge=1, le=20)
+    max_file_count: int = Field(default=5, ge=1)
+
+    @field_validator("max_file_count")
+    @classmethod
+    def validate_max_file_count(cls, v: int) -> int:
+        from app.core.config import settings
+        if v > settings.MAX_FILE_COUNT:
+            raise ValueError(f"max_file_count 不能超过 {settings.MAX_FILE_COUNT}")
+        return v
 
 
 class OpeningStatementConfig(BaseModel):