feat(memory-api): add end user management and enhance memory API endpoints

- Add end_user_controller with unauthenticated endpoint for creating end users
- Implement get_or_create_end_user logic to handle duplicate end users by other_id
- Register end_user_controller router in main controller initialization
- Add list_memory_configs endpoint to retrieve all workspace memory configurations
- Update MemoryWriteRequest and MemoryReadRequest to make config_id required field
- Refactor memory API endpoints to parse request body directly instead of using Body parameter
- Add CreateEndUserRequest and CreateEndUserResponse schemas for end user creation
- Add ListConfigsResponse schema for configs listing endpoint
- Remove unused config_id and llm_model_id parameters from Neo4j write operation
- Update .gitignore to exclude redbear-mem-metrics and pitch-deck directories

api/app/services/memory_agent_service.py

@@ -1179,7 +1179,7 @@ def get_end_user_connected_config(end_user_id: str, db: Session) -> Dict[str, An
     app = db.query(App).filter(App.id == app_id).first()
     if not app:
         logger.warning(f"App not found: {app_id}")
-        raise ValueError(f"应用不存在: {app_id}")
+        # raise ValueError(f"应用不存在: {app_id}")
     # TODO: temp fix for draft run
     # if not app.current_release_id:
     #     logger.warning(f"No current release for app: {app_id}")
@@ -1252,17 +1252,15 @@ def get_end_user_connected_config(end_user_id: str, db: Session) -> Dict[str, An
     memory_config_service = MemoryConfigService(db)
     memory_config = memory_config_service.get_config_with_fallback(
         memory_config_id=memory_config_id_to_use,
-        workspace_id=app.workspace_id
+        workspace_id=end_user.workspace_id
     )
 
     memory_config_id = str(memory_config.config_id) if memory_config else None
 
     result = {
         "end_user_id": str(end_user_id),
-        "app_id": str(app_id),
-        "release_id": str(app.current_release_id) if app.current_release_id else None,
         "memory_config_id": memory_config_id,
-        "workspace_id": str(app.workspace_id)
+        "workspace_id": str(end_user.workspace_id)
     }
 
     logger.info(