chore: 后端 agent 和 users 模块代码更新优化

backend/src/v1/auth/router.py

@@ -1,21 +1,16 @@
 from __future__ import annotations
 
-from typing import Annotated
-
 from fastapi import APIRouter, Depends, Request, Response
 from fastapi import HTTPException
 
-from core.auth.models import CurrentUser
 from v1.auth.rate_limit import enforce_rate_limit
 from v1.auth.dependencies import get_auth_service
-from v1.users.dependencies import get_current_user
 from v1.auth.schemas import (
     PasswordResetConfirmRequest,
     SessionCreateRequest,
     SessionDeleteRequest,
     SessionRefreshRequest,
     SessionResponse,
-    UserByEmailResponse,
     VerificationCreateRequest,
     VerificationCreateResponse,
     VerificationResendRequest,