[P] Remove user_id from store <-> mapview interaction, fix update_db_record

store/main.py

@@ -39,8 +39,8 @@ subscriptions: Set[WebSocket] = set()
 
 
 # FastAPI WebSocket endpoint
-@app.websocket("/ws/{user_id}")
-async def websocket_endpoint(websocket: WebSocket, user_id: int):
+@app.websocket("/ws")
+async def websocket_endpoint(websocket: WebSocket):
     await websocket.accept()
 
     subscriptions.add(websocket)