feat(memory): make config_id optional and improve configuration validation

- Make config_id optional in UserInput and Write_UserInput schemas
- Update write_memory and read_memory method signatures to accept Optional[str] for config_id
- Implement automatic config retrieval from end_user connection when config_id is not provided
- Add explicit error handling for missing memory configurations with descriptive error messages
- Improve emotion_controller to validate config_id using MemoryConfigService when provided
- Fallback to get_end_user_connected_config when config_id is None
- Distinguish between specific "no configuration found" errors and other exceptions for better debugging
- Ensures users can operate without explicitly providing config_id if they have a connected configuration

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: str
+    config_id: Optional[str] = None
 
 
 class Write_UserInput(BaseModel):
     message: str
     group_id: str
-    config_id: str
+    config_id: Optional[str] = None
 
 class End_User_Information(BaseModel):
     end_user_name: str  # 这是要更新的用户名