style(auth): 微信登录 import 去前向未用 + isort 排序

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/api/v1/auth.py

@@ -20,13 +20,12 @@ from app.core.ratelimit import enforce_rate_limit
 from app.core.security import (
     TokenError,
     create_bind_ticket,
-    decode_bind_ticket,
     decode_token,
     issue_token_pair,
 )
+from app.integrations import wxpay
 from app.integrations.jiguang import JiguangError, mask_phone, verify_and_get_phone
 from app.integrations.sms import SmsError, send_code, verify_code
-from app.integrations import wxpay
 from app.repositories import onboarding as onboarding_repo
 from app.repositories import user as user_repo
 from app.schemas.auth import (

tests/test_wechat_login.py

@@ -8,7 +8,6 @@ from __future__ import annotations
 
 import pytest
 
-from app.api.v1 import auth
 from app.core import security
 from app.integrations import wxpay