refactor(memory): restructure memory agent and config management

- Reorganize imports and remove unused dependencies across memory agent controllers
- Extract config validation logic into dedicated validators module
- Create new memory_config_model and memory_config_schema for configuration management
- Implement memory_config_service for centralized config handling
- Add embedder_utils module for embedding model utilities
- Refactor memory agent service to use new config validation framework
- Clean up configuration files (remove config.json, testdata.json, dbrun.json)
- Remove deprecated hybrid_chatbot.py and config overrides
- Update logging configuration and error handling across memory modules
- Consolidate LLM and embedding model validation into validators
- Improve code organization and reduce duplication in memory storage services
- Enhance type classification and verification tools with better error handling

api/app/schemas/memory_agent_schema.py

@@ -8,13 +8,13 @@ class UserInput(BaseModel):
     history: list[dict]
     search_switch: str
     group_id: str
-    config_id: Optional[str] = None
+    config_id: str
 
 
 class Write_UserInput(BaseModel):
     message: str
     group_id: str
-    config_id: Optional[str] = None
+    config_id: str
 
 class End_User_Information(BaseModel):
     end_user_name: str  # 这是要更新的用户名