perf: 优化 MySQL 查询并接入 pytest

web/backend/routers/login.py

@@ -5,7 +5,7 @@ import threading
 from datetime import datetime
 from fastapi import APIRouter, Depends, HTTPException, WebSocket, WebSocketDisconnect
 from sqlalchemy import func
-from sqlalchemy.orm import Session, defer
+from sqlalchemy.orm import Session, defer, load_only
 
 from ..database import get_db, SessionLocal
 from ..models import User, Account, LoginTask, ProxyConfig as ProxyConfigModel
@@ -120,7 +120,12 @@ def list_tasks(
     account_ids = [t.account_id for t in rows]
     accounts_map = {}
     if account_ids:
-        accs = db.query(Account).filter(Account.id.in_(account_ids)).all()
+        accs = (
+            db.query(Account)
+            .options(load_only(Account.id, Account.username))
+            .filter(Account.id.in_(account_ids))
+            .all()
+        )
         accounts_map = {a.id: a.username for a in accs}
 
     result = []