chore(alembic): 合并 pages_override 与领券成功率两个迁移 head,修复 upgrade head(单数)多 head 报错

pull main 带入 #126 的 admin_user_pages_override,与本分支领券成功率的
coupon_session_platform_success → coupon_claim_app_env 都从 admin_user_plain_password
分叉,形成两个 alembic head。多 head 会让部署/run.sh 用的 `alembic upgrade head`(单数)
报 "Multiple head revisions are present" 而中断。

本迁移为纯 merge:upgrade/downgrade 均空,不含任何表结构或数据改动,仅把两个 head
收敛为单 head(merge_pages_override_coupon_slot),使 `alembic upgrade head` 恢复正常。

alembic/versions/phone_rebind_log.py

@@ -0,0 +1,32 @@
+"""phone_rebind_log 表(M2 换绑 30 天限制台账)
+
+Revision ID: phone_rebind_log
+Revises: comparison_llm_cost
+"""
+from alembic import op
+import sqlalchemy as sa
+
+revision = "phone_rebind_log"
+down_revision = "comparison_llm_cost"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "phone_rebind_log",
+        sa.Column("id", sa.Integer(), primary_key=True, autoincrement=True),
+        sa.Column("phone", sa.String(length=20), nullable=False),
+        sa.Column("old_user_id", sa.Integer(), nullable=True),
+        sa.Column("new_user_id", sa.Integer(), nullable=False),
+        sa.Column("source", sa.String(length=32), nullable=False, server_default="wechat_conflict"),
+        sa.Column("rebound_at", sa.DateTime(timezone=True), server_default=sa.func.now(), nullable=False),
+    )
+    op.create_index("ix_phone_rebind_log_phone", "phone_rebind_log", ["phone"])
+    op.create_index("ix_phone_rebind_log_rebound_at", "phone_rebind_log", ["rebound_at"])
+
+
+def downgrade() -> None:
+    op.drop_index("ix_phone_rebind_log_rebound_at", table_name="phone_rebind_log")
+    op.drop_index("ix_phone_rebind_log_phone", table_name="phone_rebind_log")
+    op.drop_table("phone_rebind_log")

app/api/v1/auth.py

@@ -12,19 +12,36 @@ from __future__ import annotations
 
 import logging
 
-from fastapi import APIRouter, HTTPException, Request, status
+from fastapi import APIRouter, HTTPException, Request
+from sqlalchemy.exc import IntegrityError
 
 from app.api.deps import CurrentUser, DbSession
 from app.core import test_account
-from app.core.ratelimit import enforce_rate_limit
-from app.core.security import TokenError, decode_token, issue_token_pair
+from app.core.ratelimit import (
+    RateLimitRule,
+    check_rate_limits,
+    enforce_rate_limit,
+    record_rate_limits,
+)
+from app.core.security import (
+    TokenError,
+    create_bind_ticket,
+    create_conflict_ticket,
+    decode_bind_ticket,
+    decode_conflict_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.repositories import onboarding as onboarding_repo
+from app.repositories import phone_rebind as rebind_repo
 from app.repositories import user as user_repo
 from app.schemas.auth import (
     JverifyLoginRequest,
     LogoutResponse,
+    OccupiedAccountInfo,
     RefreshRequest,
     SmsLoginRequest,
     SmsSendRequest,
@@ -32,6 +49,13 @@ from app.schemas.auth import (
     TokenPair,
     TokenWithUser,
     UserOut,
+    WechatBindPhoneJverifyRequest,
+    WechatBindPhoneSmsRequest,
+    WechatBindResultResponse,
+    WechatConflictContinueRequest,
+    WechatConflictRebindRequest,
+    WechatLoginRequest,
+    WechatLoginResponse,
 )
 
 logger = logging.getLogger("shagua.auth")
@@ -40,9 +64,10 @@ router = APIRouter(prefix="/api/v1/auth", tags=["auth"])
 
 # 手机号登录防刷:同一设备(device_id) + 同一 IP 每小时最多的登录尝试次数(成功/失败都计)。
 SMS_LOGIN_MAX_PER_HOUR = 5
-# 发码防刷:同一设备(device_id) + 同一 IP 每小时最多的发码次数。
+# 发码防刷(同一设备 device_id + 同一 IP,**只按成功发码计数**;被单号 60s 冷却挡下的重发不占额度):
 # 堵「换手机号绕开单号 60s 冷却」的洞 —— 冷却是单号维度,一机换号能绕开。
-SMS_SEND_MAX_PER_HOUR_PER_DEVICE = 5
+SMS_SEND_MAX_PER_HOUR_PER_DEVICE = 5     # 每小时上限
+SMS_SEND_MAX_PER_DAY_PER_DEVICE = 20     # 每天上限(再叠一层日封顶,挡低频长时间轰炸)
 
 
 def _login_response(
@@ -99,23 +124,26 @@ def sms_send(req: SmsSendRequest, request: Request) -> SmsSendResponse:
         logger.info("test_account sms_send short-circuit (不真发)")
         return SmsSendResponse(sent=True, mock=True, cooldown_sec=0)
 
-    # 防刷:同一设备(device_id) + 同一 IP 每小时最多 SMS_SEND_MAX_PER_HOUR_PER_DEVICE 次发码。
-    # 补「换手机号绕开单号 60s 冷却」的洞(冷却是单号维度,一机换号能绕);设备维度按机器封顶,
-    # 挡短信轰炸/烧钱。放在真发(send_code)之前 → 超限直接拦下、不真发短信。
-    enforce_rate_limit(
-        request,
-        scope="sms-send-device",
-        subject=req.device_id,
-        limit=SMS_SEND_MAX_PER_HOUR_PER_DEVICE,
-        window_sec=3600,
-        detail="操作过于频繁,请稍后再试",
-    )
+    # 发码防刷:同一设备(device_id) + 同一 IP,每小时 / 每天两道闸,**均只按成功发码计数**。
+    # 补「换手机号绕开单号 60s 冷却」的洞(冷却是单号维度,一机换号能绕);设备维度按机器封顶,挡短信轰炸/烧钱。
+    # 关键:被单号 60s 冷却挡下的重发是「没真发、没烧钱」→ 不该占额度。故 check(先判)放在真发之前
+    # (超限直接 429、不真发),record(计数)只在 send_code 成功后调 —— 冷却/供应商失败抛 429 时直接返回、不计数。
+    send_rules = [
+        RateLimitRule("sms-send-device", SMS_SEND_MAX_PER_HOUR_PER_DEVICE, 3600,
+                      "操作过于频繁,请稍后再试"),
+        RateLimitRule("sms-send-device-daily", SMS_SEND_MAX_PER_DAY_PER_DEVICE, 86400,
+                      "今日验证码发送次数过多,请明天再试"),
+    ]
+    check_rate_limits(request, subject=req.device_id, rules=send_rules)
 
     try:
         cooldown = send_code(req.phone)
     except SmsError as e:
         raise HTTPException(status_code=e.status_code, detail=str(e)) from e
 
+    # 发码成功 → 两道闸各 +1(被单号冷却挡下的重发走不到这里,故不占额度)
+    record_rate_limits(request, subject=req.device_id, rules=send_rules)
+
     from app.core.config import settings  # 局部 import 避免循环
 
     return SmsSendResponse(sent=True, mock=settings.SMS_MOCK, cooldown_sec=cooldown)
@@ -166,6 +194,261 @@ def sms_login(req: SmsLoginRequest, request: Request, db: DbSession) -> TokenWit
     return _login_response(user, onboarding_completed=completed)
 
 
+# ===================== 微信登录 =====================
+
+@router.post(
+    "/wechat-login",
+    response_model=WechatLoginResponse,
+    summary="微信登录(openid 命中即登入,否则发绑号令牌)",
+)
+def wechat_login(req: WechatLoginRequest, db: DbSession) -> WechatLoginResponse:
+    from app.core.config import settings  # 局部 import,避免循环
+
+    # 微信登录只需 code→openid(sns/oauth2),不需要商户转账证书;故只校验 APP_ID/SECRET。
+    if not (settings.WECHAT_APP_ID and settings.WECHAT_APP_SECRET):
+        raise HTTPException(status_code=503, detail="wechat login not configured")
+
+    try:
+        info = wxpay.code_to_userinfo(req.code)  # {openid, nickname, avatar_url, raw};失败抛 ValueError
+    except ValueError as e:
+        raise HTTPException(status_code=400, detail=str(e)) from e
+
+    openid = info["openid"]
+    user = user_repo.get_user_by_wechat_openid(db, openid)
+    if user is not None:
+        # openid 命中 → 直接登入(绝不套用提现 bind-wechat 的"撞号即 409"逻辑)
+        if user.status != "active":
+            raise HTTPException(status_code=403, detail="account disabled")
+        user_repo.touch_last_login(db, user)
+        completed = onboarding_repo.is_completed(db, user_id=user.id, device_id=req.device_id)
+        logger.info("wechat_login hit user_id=%d openid=%s*** onboarded=%s", user.id, openid[:6], completed)
+        return WechatLoginResponse(
+            status="logged_in",
+            token=_login_response(user, onboarding_completed=completed),
+        )
+
+    # 未命中 → 签发短时 bind_ticket,进手机号绑定流程(账号此刻还不建)
+    ticket = create_bind_ticket(
+        openid=openid,
+        wechat_nickname=info["nickname"],
+        wechat_avatar_url=info["avatar_url"],
+    )
+    logger.info("wechat_login new openid=%s*** issue bind_ticket", openid[:6])
+    return WechatLoginResponse(
+        status="need_bind_phone",
+        bind_ticket=ticket,
+        wechat_nickname=info["nickname"],
+        wechat_avatar_url=info["avatar_url"],
+    )
+
+
+def _finish_wechat_bind(
+    db,
+    *,
+    openid: str,
+    wechat_nickname: str | None,
+    wechat_avatar_url: str | None,
+    phone: str,
+    device_id: str,
+) -> WechatBindResultResponse:
+    """绑手机建号的公共尾段:手机号被占用 → 返回 phone_occupied(M2 处理 3 选 1);
+    未占用 → 新建微信账号(channel=wechat,昵称头像取微信)→ 签 token 登入。"""
+    existing = user_repo.get_user_by_phone(db, phone)
+    if existing is not None:
+        from app.core.config import settings  # 局部 import,避免循环
+
+        ticket = create_conflict_ticket(
+            openid=openid,
+            wechat_nickname=wechat_nickname,
+            wechat_avatar_url=wechat_avatar_url,
+            phone=phone,
+        )
+        blocked = rebind_repo.rebound_within_days(db, phone, settings.PHONE_REBIND_LIMIT_DAYS)
+        logger.info(
+            "wechat bind phone occupied phone=%s by user_id=%d has_wechat=%s",
+            mask_phone(phone), existing.id, bool(existing.wechat_openid),
+        )
+        return WechatBindResultResponse(
+            status="phone_occupied",
+            occupied_account=OccupiedAccountInfo(
+                nickname=existing.nickname,
+                avatar_url=existing.avatar_url,
+                created_at=existing.created_at,
+                has_wechat=bool(existing.wechat_openid),
+            ),
+            conflict_ticket=ticket,
+            rebind_available=not blocked,
+            rebind_blocked_days=(
+                rebind_repo.remaining_block_days(db, phone, settings.PHONE_REBIND_LIMIT_DAYS)
+                if blocked else 0
+            ),
+        )
+    user = user_repo.create_wechat_user(
+        db,
+        phone=phone,
+        openid=openid,
+        wechat_nickname=wechat_nickname,
+        wechat_avatar_url=wechat_avatar_url,
+    )
+    completed = onboarding_repo.is_completed(db, user_id=user.id, device_id=device_id)
+    logger.info("wechat bind ok user_id=%d phone=%s openid=%s*** onboarded=%s",
+                user.id, mask_phone(phone), openid[:6], completed)
+    return WechatBindResultResponse(
+        status="logged_in",
+        token=_login_response(user, onboarding_completed=completed),
+    )
+
+
+@router.post(
+    "/wechat/bind-phone/sms",
+    response_model=WechatBindResultResponse,
+    summary="微信登录·其他手机号(短信)绑定",
+)
+def wechat_bind_phone_sms(
+    req: WechatBindPhoneSmsRequest, request: Request, db: DbSession
+) -> WechatBindResultResponse:
+    try:
+        claims = decode_bind_ticket(req.bind_ticket)
+    except TokenError as e:
+        raise HTTPException(status_code=401, detail="授权已过期,请重新用微信登录") from e
+
+    # 防刷:同 sms/login,按 设备+IP 每小时限流(放在验证码校验之前,失败也计数)
+    enforce_rate_limit(
+        request,
+        scope="wechat-bind-sms-device",
+        subject=req.device_id,
+        limit=SMS_LOGIN_MAX_PER_HOUR,
+        window_sec=3600,
+        detail="登录尝试过于频繁,请稍后再试",
+    )
+
+    if not verify_code(req.phone, req.code):
+        raise HTTPException(status_code=400, detail="invalid sms code")
+
+    return _finish_wechat_bind(
+        db,
+        openid=claims["openid"],
+        wechat_nickname=claims["wnk"],
+        wechat_avatar_url=claims["wav"],
+        phone=req.phone,
+        device_id=req.device_id,
+    )
+
+
+@router.post(
+    "/wechat/bind-phone/jverify",
+    response_model=WechatBindResultResponse,
+    summary="微信登录·本机号(极光)绑定",
+)
+def wechat_bind_phone_jverify(
+    req: WechatBindPhoneJverifyRequest, db: DbSession
+) -> WechatBindResultResponse:
+    try:
+        claims = decode_bind_ticket(req.bind_ticket)
+    except TokenError as e:
+        raise HTTPException(status_code=401, detail="授权已过期,请重新用微信登录") from e
+
+    try:
+        phone = verify_and_get_phone(req.login_token)
+    except JiguangError as e:
+        logger.error("[JG] verify+decrypt failed: %s", e, exc_info=True)
+        raise HTTPException(status_code=502, detail=f"jiguang verify failed: {e}") from e
+
+    return _finish_wechat_bind(
+        db,
+        openid=claims["openid"],
+        wechat_nickname=claims["wnk"],
+        wechat_avatar_url=claims["wav"],
+        phone=phone,
+        device_id=req.device_id,
+    )
+
+
+# ===================== 微信占用冲突(M2) =====================
+
+@router.post(
+    "/wechat/conflict/continue",
+    response_model=WechatBindResultResponse,
+    summary="微信占用冲突·继续绑定(登录老账号,能绑就绑)",
+)
+def wechat_conflict_continue(
+    req: WechatConflictContinueRequest, request: Request, db: DbSession
+) -> WechatBindResultResponse:
+    try:
+        claims = decode_conflict_ticket(req.conflict_ticket)
+    except TokenError as e:
+        raise HTTPException(status_code=401, detail="操作超时,请重新用微信登录") from e
+
+    enforce_rate_limit(
+        request, scope="wechat-conflict-device", subject=req.device_id,
+        limit=SMS_LOGIN_MAX_PER_HOUR, window_sec=3600, detail="操作过于频繁,请稍后再试",
+    )
+
+    user = user_repo.get_user_by_phone(db, claims["phone"])
+    if user is None:
+        # P 期间被腾空(老账号改号/注销)→ 前提已变,让前端重走
+        raise HTTPException(status_code=409, detail="账号状态已变化,请重新登录")
+    if user.status != "active":
+        raise HTTPException(status_code=403, detail="account disabled")
+
+    if user.wechat_openid is None:
+        try:
+            user_repo.attach_wechat_to_user(
+                db, user, openid=claims["openid"],
+                wechat_nickname=claims["wnk"], wechat_avatar_url=claims["wav"],
+            )
+        except IntegrityError:
+            db.rollback()  # openid 被别处绑走 → 只登入不绑
+            user_repo.touch_last_login(db, user)
+    else:
+        user_repo.touch_last_login(db, user)  # X 已绑别的微信 → 只登入,丢弃本次 openid
+
+    completed = onboarding_repo.is_completed(db, user_id=user.id, device_id=req.device_id)
+    logger.info("wechat conflict continue user_id=%d openid=%s***", user.id, claims["openid"][:6])
+    return WechatBindResultResponse(
+        status="logged_in",
+        token=_login_response(user, onboarding_completed=completed),
+    )
+
+
+@router.post(
+    "/wechat/conflict/rebind",
+    response_model=WechatBindResultResponse,
+    summary="微信占用冲突·换绑(注销老账号+用该号重建全新账号)",
+)
+def wechat_conflict_rebind(
+    req: WechatConflictRebindRequest, request: Request, db: DbSession
+) -> WechatBindResultResponse:
+    from app.core.config import settings  # 局部 import,避免循环
+
+    try:
+        claims = decode_conflict_ticket(req.conflict_ticket)
+    except TokenError as e:
+        raise HTTPException(status_code=401, detail="操作超时,请重新用微信登录") from e
+
+    enforce_rate_limit(
+        request, scope="wechat-conflict-device", subject=req.device_id,
+        limit=SMS_LOGIN_MAX_PER_HOUR, window_sec=3600, detail="操作过于频繁,请稍后再试",
+    )
+
+    phone = claims["phone"]
+    if rebind_repo.rebound_within_days(db, phone, settings.PHONE_REBIND_LIMIT_DAYS):
+        days = rebind_repo.remaining_block_days(db, phone, settings.PHONE_REBIND_LIMIT_DAYS)
+        raise HTTPException(status_code=409, detail=f"该手机号 {days} 天内已换绑过,暂不能再次换绑")
+
+    user = user_repo.rebind_account(
+        db, phone=phone, openid=claims["openid"],
+        wechat_nickname=claims["wnk"], wechat_avatar_url=claims["wav"],
+    )
+    completed = onboarding_repo.is_completed(db, user_id=user.id, device_id=req.device_id)
+    logger.info("wechat conflict rebind new_user_id=%d phone=%s openid=%s***",
+                user.id, mask_phone(phone), claims["openid"][:6])
+    return WechatBindResultResponse(
+        status="logged_in",
+        token=_login_response(user, onboarding_completed=completed),
+    )
+
+
 # ===================== Refresh =====================
 
 @router.post("/refresh", response_model=TokenPair, summary="用 refresh_token 换新 token 对")

app/api/v1/device.py

@@ -14,24 +14,18 @@ import logging
 from fastapi import APIRouter
 
 from app.api.deps import CurrentUser, DbSession
-from app.core import wx_poc_signal
 from app.repositories import device as device_repo
 from app.schemas.device import (
     DeviceOut,
     DeviceRegisterRequest,
     HeartbeatRequest,
-    HeartbeatResponse,
     LivenessAckRequest,
     LivenessOut,
     OkResponse,
-    PendingCompare,
 )
 
 logger = logging.getLogger("shagua.device")
 
-# PoC:源平台代号 → Android 包名(前端 launch 用)。当前只用美团。
-_SOURCE_PACKAGES = {"meituan": "com.sankuai.meituan"}
-
 router = APIRouter(prefix="/api/v1/device", tags=["device"])
 
 
@@ -58,12 +52,12 @@ def register_device(
     return DeviceOut.model_validate(device)
 
 
-@router.post("/heartbeat", response_model=HeartbeatResponse, summary="上报心跳")
+@router.post("/heartbeat", response_model=OkResponse, summary="上报心跳")
 def report_heartbeat(
     req: HeartbeatRequest,
     user: CurrentUser,
     db: DbSession,
-) -> HeartbeatResponse:
+) -> OkResponse:
     device_repo.touch_heartbeat(
         db,
         user_id=user.id,
@@ -71,16 +65,7 @@ def report_heartbeat(
         accessibility_enabled=req.accessibility_enabled,
         registration_id=req.registration_id,
     )
-    # PoC:该设备有"待比价"信号则带回(只对写死的测试设备生效, 取走即清、只弹一次)
-    source = wx_poc_signal.pop_pending(req.device_id)
-    pending = None
-    if source:
-        pending = PendingCompare(
-            source_platform=source,
-            source_package=_SOURCE_PACKAGES.get(source, ""),
-        )
-        logger.info("heartbeat 下发比价信号 device=%s source=%s", req.device_id, source)
-    return HeartbeatResponse(pending_compare=pending)
+    return OkResponse()
 
 
 @router.get("/liveness", response_model=LivenessOut, summary="查询本机掉线告警(后置检测)")

app/api/v1/wx_kf.py

@@ -1,159 +0,0 @@
-"""微信客服(企业微信)消息接收回调 /wx/kf/callback(裸路径, 非 /api/v1)。
-
-对应企业微信「微信客服」→ 客服账号 → 接收消息回调里填的 URL。是服务号版(wx_mp.py)的
-平行实现:下游(set_pending → 心跳下发 → 前端弹窗)完全一致, 只有上游"如何拿到用户消息"不同 ——
-服务号是微信把消息直接 POST 给你;微信客服是 POST 一个事件通知, 你再用 <Token> 主动 sync_msg 拉。
-
-  GET  : URL 接入验证 → msg_signature 验签(含密文 echostr) → 解密 echostr → 返回明文。
-         ⚠️ 与公众号明文模式不同:企业微信 echostr 是密文, 必须解密后返回。
-  POST : 收事件(密文) → msg_signature 验签 → AES 解密 → 解析 XML。
-         Event=kf_msg_or_event → 取 <Token>/<OpenKfId> → sync_msg 增量拉消息 →
-         客户(origin=3)发来的图片(image) → set_pending(测试设备, "meituan") + 下载落盘。
-         其余消息/事件记日志忽略。一律返回 "success"(异常也吞掉, 不让企业微信重试轰炸)。
-
-回调加密与公众号「安全模式」同源, 直接复用 integrations/wx_mp_crypto(验签 + AES-256-CBC 解密),
-差别只在 receiveid 用 corpid(公众号是 appid)。MVP 只做"收图打信号 + 落盘证明链路通"。
-"""
-from __future__ import annotations
-
-import logging
-import xml.etree.ElementTree as ET
-from pathlib import Path
-from typing import Any
-
-from fastapi import APIRouter, Request
-from fastapi.responses import PlainTextResponse
-
-from app.core import wx_poc_signal
-from app.core.config import settings
-from app.integrations import wx_kf_client, wx_mp_crypto
-
-logger = logging.getLogger("shagua.wx_kf")
-
-router = APIRouter(prefix="/wx/kf", tags=["wx-kf"])
-
-# 收到的截图暂存目录(MVP 验证用;接上识别后可改为不落盘或定期清理)
-_INBOX = Path(settings.MEDIA_ROOT) / "wx_kf_inbox"
-
-
-@router.get("/callback", include_in_schema=False)
-async def verify(
-    msg_signature: str = "", timestamp: str = "", nonce: str = "", echostr: str = ""
-) -> PlainTextResponse:
-    """企业微信 URL 接入验证:验签(密文 echostr 参与)→ 解密 echostr → 返回明文。"""
-    if not settings.wx_kf_callback_configured:
-        logger.warning("wx_kf verify: 回调凭证未配齐(CorpId/Token/AESKey/Secret)")
-        return PlainTextResponse("", status_code=503)
-    if not wx_mp_crypto.verify_msg_signature(
-        settings.WX_KF_TOKEN, timestamp, nonce, echostr, msg_signature
-    ):
-        logger.warning("wx_kf verify: signature 校验失败 ts=%s nonce=%s", timestamp, nonce)
-        return PlainTextResponse("invalid signature", status_code=403)
-    try:
-        plain = wx_mp_crypto.decrypt_message(
-            settings.WX_KF_AES_KEY, settings.WX_KF_CORP_ID, echostr
-        )
-    except Exception:
-        logger.exception("wx_kf verify: echostr 解密失败")
-        return PlainTextResponse("decrypt failed", status_code=403)
-    return PlainTextResponse(plain)
-
-
-@router.post("/callback", include_in_schema=False)
-async def receive(request: Request) -> PlainTextResponse:
-    """收事件通知(安全模式)。任何异常都吞掉返回 success, 不让企业微信重试轰炸, 靠日志排查。"""
-    if not settings.wx_kf_callback_configured:
-        logger.warning("wx_kf receive: 回调凭证未配齐")
-        return PlainTextResponse("success")
-    try:
-        body = (await request.body()).decode("utf-8")
-        qp = request.query_params
-        # 安全模式外层 XML 只有 ToUserName + Encrypt。来源=企业微信服务器(HTTPS)+ 下面验签,
-        # 且 stdlib ET 不扩展外部实体, XXE 不适用。
-        encrypt = ET.fromstring(body).findtext("Encrypt") or ""
-        if not wx_mp_crypto.verify_msg_signature(
-            settings.WX_KF_TOKEN,
-            qp.get("timestamp", ""),
-            qp.get("nonce", ""),
-            encrypt,
-            qp.get("msg_signature", ""),
-        ):
-            logger.warning("wx_kf receive: msg_signature 校验失败")
-            return PlainTextResponse("success")
-        xml = wx_mp_crypto.decrypt_message(
-            settings.WX_KF_AES_KEY, settings.WX_KF_CORP_ID, encrypt
-        )
-        await _handle_event(ET.fromstring(xml))
-    except Exception:
-        logger.exception("wx_kf receive: 处理异常")
-    return PlainTextResponse("success")
-
-
-async def _handle_event(root: ET.Element) -> None:
-    """客服事件:MsgType=event 且 Event=kf_msg_or_event → 用 Token 增量拉消息。"""
-    event = root.findtext("Event") or ""
-    if event != "kf_msg_or_event":
-        logger.info("wx_kf 收到事件(暂忽略): event=%s", event)
-        return
-    token = root.findtext("Token") or ""
-    open_kfid = root.findtext("OpenKfId") or ""
-    msgs = await wx_kf_client.sync_messages(token, open_kfid)
-    logger.info("wx_kf sync_msg 拉到 %d 条 open_kfid=%s", len(msgs), open_kfid)
-    for msg in msgs:
-        await _handle_message(msg)
-
-
-async def _handle_message(msg: dict[str, Any]) -> None:
-    """处理单条客服消息。只关心【客户发来的】(origin=3)图片 / 小程序卡片:打比价信号(+ 落盘)。
-
-    origin:3=客户发的 / 4=系统推送 / 5=接待人员发的。接待人员或系统消息一律不触发比价。
-    两种触发物对应场景:image=用户发结算页截图;miniprogram=用户分享美团小程序卡片(见需求截图)。
-    """
-    if msg.get("origin") != 3:
-        return
-    msgtype = msg.get("msgtype") or ""
-    external_userid = msg.get("external_userid") or ""
-    if msgtype == "image":
-        media_id = (msg.get("image") or {}).get("media_id", "")
-        logger.info(
-            "wx_kf 收到图片: external_userid=%s media_id=%s", external_userid, media_id
-        )
-        _fire_pending("image")
-        await _save_media(media_id, external_userid)
-    elif msgtype == "miniprogram":
-        mp = msg.get("miniprogram") or {}
-        logger.info(
-            "wx_kf 收到小程序卡片: external_userid=%s title=%s appid=%s",
-            external_userid,
-            mp.get("title"),
-            mp.get("appid"),
-        )
-        # 卡片无可下载媒体, 只打信号;源平台/订单识别(可据 appid 判平台)留后续, 现写死美团。
-        _fire_pending("miniprogram")
-    else:
-        logger.info(
-            "wx_kf 收到消息(暂忽略): external_userid=%s type=%s", external_userid, msgtype
-        )
-
-
-def _fire_pending(kind: str) -> None:
-    """PoC:给写死的测试设备打"从美团比价"信号(下次心跳带回前端弹窗, 与服务号版完全一致)。"""
-    poc_dev = settings.WX_POC_TEST_DEVICE_ID
-    if not poc_dev:
-        return
-    wx_poc_signal.set_pending(poc_dev, "meituan")
-    logger.info("wx_kf PoC: 已给测试设备 %s 打比价信号 source=meituan (触发=%s)", poc_dev, kind)
-
-
-async def _save_media(media_id: str, external_userid: str) -> None:
-    """图片消息只给 media_id, 走临时素材下载接口拉回落盘(PoC 验证用)。"""
-    content = await wx_kf_client.download_media(media_id)
-    if not content:
-        return
-    try:
-        _INBOX.mkdir(parents=True, exist_ok=True)
-        dest = _INBOX / f"{external_userid[:16]}_{media_id[:16]}.jpg"
-        dest.write_bytes(content)
-        logger.info("wx_kf 图片已落盘: %s (%d bytes)", dest, len(content))
-    except Exception:
-        logger.exception("wx_kf 图片落盘失败 media_id=%s", media_id)

app/api/v1/wx_mp.py

@@ -1,112 +0,0 @@
-"""微信服务号消息接收回调 /wx/mp/callback(裸路径, 非 /api/v1)。
-
-对应公众平台"设置与开发 → 基本配置 → 服务器配置"里填的 URL。
-  GET  : URL 接入验证 → 校验 signature → 原样返回 echostr(明文)
-  POST : 收用户消息(安全模式密文) → msg_signature 验签 → AES 解密 → 解析 XML
-         图片消息(MsgType=image): 打日志(openid/PicUrl/MediaId) + 用 PicUrl 下载落盘
-         其余消息/事件: 记一条日志忽略。一律返回 "success"(微信据此不再重试)。
-
-MVP 只做"收到图片并落盘"证明链路通;后续接:识别平台+订单 → 打 pending_compare 标记
-→ 心跳带回前端弹窗,以及 openid↔device 绑定。任何异常都返回 "success"、不让微信重试轰炸。
-"""
-from __future__ import annotations
-
-import logging
-import xml.etree.ElementTree as ET
-from pathlib import Path
-
-import httpx
-from fastapi import APIRouter, Request
-from fastapi.responses import PlainTextResponse
-
-from app.core import wx_poc_signal
-from app.core.config import settings
-from app.integrations import wx_mp_crypto
-
-logger = logging.getLogger("shagua.wx_mp")
-
-router = APIRouter(prefix="/wx/mp", tags=["wx-mp"])
-
-# 收到的截图暂存目录(MVP 验证用;接上识别后可改为不落盘或定期清理)
-_INBOX = Path(settings.MEDIA_ROOT) / "wx_inbox"
-
-
-@router.get("/callback", include_in_schema=False)
-async def verify(
-    signature: str = "", timestamp: str = "", nonce: str = "", echostr: str = ""
-) -> PlainTextResponse:
-    """微信 URL 接入验证:校验 signature 通过则原样返回 echostr。"""
-    if not settings.WX_MP_TOKEN:
-        logger.warning("wx_mp verify: WX_MP_TOKEN 未配置")
-        return PlainTextResponse("", status_code=503)
-    if wx_mp_crypto.verify_url_signature(
-        settings.WX_MP_TOKEN, timestamp, nonce, signature
-    ):
-        return PlainTextResponse(echostr)
-    logger.warning("wx_mp verify: signature 校验失败 ts=%s nonce=%s", timestamp, nonce)
-    return PlainTextResponse("invalid signature", status_code=403)
-
-
-@router.post("/callback", include_in_schema=False)
-async def receive(request: Request) -> PlainTextResponse:
-    """收用户消息(安全模式)。任何异常都吞掉返回 success,不让微信重试轰炸,靠日志排查。"""
-    if not settings.wx_mp_callback_configured:
-        logger.warning("wx_mp receive: 回调凭证未配齐(Token/AESKey/AppID)")
-        return PlainTextResponse("success")
-    try:
-        body = (await request.body()).decode("utf-8")
-        qp = request.query_params
-        # 安全模式外层 XML 只有 ToUserName + Encrypt。来源=微信服务器(HTTPS)+ 下面验签,
-        # 且 stdlib ET 不扩展外部实体, XXE 不适用。
-        encrypt = ET.fromstring(body).findtext("Encrypt") or ""
-        if not wx_mp_crypto.verify_msg_signature(
-            settings.WX_MP_TOKEN,
-            qp.get("timestamp", ""),
-            qp.get("nonce", ""),
-            encrypt,
-            qp.get("msg_signature", ""),
-        ):
-            logger.warning("wx_mp receive: msg_signature 校验失败")
-            return PlainTextResponse("success")
-        xml = wx_mp_crypto.decrypt_message(
-            settings.WX_MP_AES_KEY, settings.WX_MP_APPID, encrypt
-        )
-        await _handle_message(ET.fromstring(xml))
-    except Exception:
-        logger.exception("wx_mp receive: 处理异常")
-    return PlainTextResponse("success")
-
-
-async def _handle_message(root: ET.Element) -> None:
-    openid = root.findtext("FromUserName") or ""
-    msg_type = root.findtext("MsgType") or ""
-    if msg_type == "image":
-        pic_url = root.findtext("PicUrl") or ""
-        media_id = root.findtext("MediaId") or ""
-        logger.info(
-            "wx_mp 收到图片: openid=%s media_id=%s pic_url=%s", openid, media_id, pic_url
-        )
-        # PoC: 写死"该测试设备要从美团比价", 下次心跳带回前端弹选平台窗
-        poc_dev = settings.WX_POC_TEST_DEVICE_ID
-        if poc_dev:
-            wx_poc_signal.set_pending(poc_dev, "meituan")
-            logger.info("wx_mp PoC: 已给测试设备 %s 打比价信号 source=meituan", poc_dev)
-        await _download(pic_url, openid, media_id)
-    else:
-        logger.info("wx_mp 收到消息(暂忽略): openid=%s type=%s", openid, msg_type)
-
-
-async def _download(pic_url: str, openid: str, media_id: str) -> None:
-    """用 PicUrl 直接下载图片落盘。PicUrl 是临时公网链接,无需 access_token / IP 白名单。"""
-    if not pic_url:
-        return
-    try:
-        _INBOX.mkdir(parents=True, exist_ok=True)
-        async with httpx.AsyncClient(timeout=15) as client:
-            resp = await client.get(pic_url)
-            resp.raise_for_status()
-        dest = _INBOX / f"{openid[:12]}_{media_id[:16]}.jpg"
-        dest.write_bytes(resp.content)
-        logger.info("wx_mp 图片已落盘: %s (%d bytes)", dest, len(resp.content))
-    except Exception:
-        logger.exception("wx_mp 图片下载失败 pic_url=%s", pic_url)

app/core/config.py

@@ -44,6 +44,11 @@ class Settings(BaseSettings):
     JWT_ALGORITHM: str = "HS256"
     JWT_ACCESS_TOKEN_EXPIRE_MINUTES: int = 120
     JWT_REFRESH_TOKEN_EXPIRE_DAYS: int = 30
+    # 微信登录未命中 openid 时签发的"待绑手机"令牌有效期(JWT_SECRET_KEY 签名,typ=wechat_bind;
+    # 见 security.create_bind_ticket)。需覆盖"授权→输手机号→收短信→输验证码"整个绑定流程。
+    WECHAT_BIND_TICKET_EXPIRE_MINUTES: int = 10
+    # 一个手机号 30 天内最多换绑一次(微信占用冲突页的"换绑"动作)。见 phone_rebind_log。
+    PHONE_REBIND_LIMIT_DAYS: int = 30
 
     # ===== Admin 后台 =====
     # admin 用独立 JWT secret(≠ JWT_SECRET_KEY),App 用户 token 无法越权访问后台。
@@ -81,6 +86,7 @@ class Settings(BaseSettings):
     SMS_SIGN_ID: int = 31729       # 极光短信签名 ID(非机密,可被 .env 覆盖)
     SMS_TEMPLATE_ID: int = 1       # 极光短信模板 ID(变量名 code,有效期 5 分钟)
     SMS_CODE_LENGTH: int = 6       # 验证码位数(本服务生成;前端 code 字段 4-8 位兼容)
+    SMS_DAILY_LIMIT_PER_PHONE: int = 10   # 单手机号每日发送上限(防刷 + 控费)
     SMS_MAX_VERIFY_ATTEMPTS: int = 5      # 单个验证码最多校验失败次数,超过即作废(防爆破)
 
     # ===== 测试账号(release 包全流程联调用)=====
@@ -106,6 +112,9 @@ class Settings(BaseSettings):
     # 美团调用走的代理。本机开发直连美团会 SSL EOF,需填 http://127.0.0.1:7897;
     # 线上国内服务器留空(=直连)。见 .env.example 与 integrations/meituan.py。
     MT_CPS_PROXY: str = ""
+    # 本地开发:开启后 /feed 接口直接返回 mock 数据,不调美团 API、不查离线库,
+    # 方便前端联调 feed 卡片样式、分页、距离排序等 UI。生产必须 false。
+    MT_CPS_MOCK_FEED: bool = True
 
     @property
     def mt_cps_configured(self) -> bool:
@@ -136,26 +145,6 @@ class Settings(BaseSettings):
     # (不跳授权、不拿 openid),整套微信代码保留。审核通过后 .env 置 true + 重启即启用,无需改代码。
     WX_MP_OAUTH_ENABLED: bool = False
 
-    # ===== 微信服务号(消息接收回调) =====
-    # 用户发消息给服务号 → 微信 POST 到 /wx/mp/callback(安全模式:Token 验签 + AESKey 解密)。
-    # 区别于上面的网页授权(那是落地页拿 openid);这里是被动收用户主动发来的消息(截图比价入口)。
-    WX_MP_TOKEN: str = ""            # 公众平台"服务器配置"的 Token(URL 验签 + 消息验签)
-    WX_MP_AES_KEY: str = ""          # EncodingAESKey(43 位, 消息 AES-256-CBC 加解密)
-
-    # ===== 微信截图比价 PoC(临时验证链路, 验证后删) =====
-    # 只对这台写死的测试设备下发"从美团比价"信号;空=不触发任何设备(部署上线零风险)。
-    # 收图 → 给此 device_id 打 pending → 该设备下次心跳带回 → 前端弹选平台窗。
-    WX_POC_TEST_DEVICE_ID: str = ""
-
-    # ===== 微信客服(企业微信;截图比价上游入口 —— 服务号版的平行实现) =====
-    # 用户在「微信客服」会话发消息 → 企业微信 POST 事件到 /wx/kf/callback → 后端 sync_msg 拉消息。
-    # 回调加密与公众号「安全模式」同源(复用 wx_mp_crypto), 但 receiveid 用 corpid 且 echostr 需解密。
-    # 拉消息 / 下载图片走 qyapi, 需 access_token(corpid + secret 换取)。全空=回调端点拒收, 零风险。
-    WX_KF_CORP_ID: str = ""          # 企业微信 corpid(回调解密 receiveid + 换 access_token)
-    WX_KF_SECRET: str = ""           # 「微信客服」Secret(换 access_token)
-    WX_KF_TOKEN: str = ""            # 客服「接收消息」回调的 Token(URL 验签 + 消息验签)
-    WX_KF_AES_KEY: str = ""          # 客服「接收消息」回调的 EncodingAESKey(AES-256-CBC 解密)
-
     @property
     def wx_mp_configured(self) -> bool:
         """服务号网页授权凭证齐全(缺则落地页不发起授权,降级为无 openid)。"""
@@ -166,21 +155,6 @@ class Settings(BaseSettings):
         """落地页是否真正发起微信授权 = 凭证齐全 且 总开关开。"""
         return self.wx_mp_configured and self.WX_MP_OAUTH_ENABLED
 
-    @property
-    def wx_mp_callback_configured(self) -> bool:
-        """消息接收回调凭证齐全(Token + AESKey + AppID)。缺则回调端点拒绝处理消息。"""
-        return bool(self.WX_MP_TOKEN and self.WX_MP_AES_KEY and self.WX_MP_APPID)
-
-    @property
-    def wx_kf_callback_configured(self) -> bool:
-        """微信客服回调凭证齐全(CorpId + Token + AESKey + Secret)。缺则回调端点拒绝处理。"""
-        return bool(
-            self.WX_KF_CORP_ID
-            and self.WX_KF_TOKEN
-            and self.WX_KF_AES_KEY
-            and self.WX_KF_SECRET
-        )
-
     # ===== 微信支付(商家转账到零钱 / 提现)=====
     # 真实凭证放 .env(已 gitignore),证书 .pem 放 secrets/。WECHAT_APP_ID 同时用于
     # 微信登录(code 换 openid)与转账,必须与 App 端开放平台 appid 一致。

app/core/ratelimit.py

@@ -9,29 +9,41 @@ from __future__ import annotations
 
 import threading
 import time
+from typing import NamedTuple
 
 from fastapi import HTTPException, Request, status
 
 from app.core.config import settings
 
-# key -> (window_start_ts, count)
-_buckets: dict[str, tuple[float, int]] = {}
+# key -> (window_start_ts, count, window_sec)
+# 存每个 key 自己的 window_sec:_buckets 混着不同窗口(60s 广告 / 3600s 登录 / 86400s 日闸)的 key,
+# GC 必须按各 key 自己的窗口判过期(见 [_purge_expired]),否则短窗口调用触发的 GC 会误删长窗口 key。
+_buckets: dict[str, tuple[float, int, float]] = {}
 _lock = threading.Lock()
+_GC_THRESHOLD = 10000  # _buckets 超此阈值才顺手清过期 key(仿 sms.py;测试可 monkeypatch 调小强制每次扫)
+
+
+def _purge_expired(now: float) -> None:
+    """清过期 key(**仅在持有 _lock 时调用**)。按每个 key 自己存的 window_sec 判过期,而非调用方的窗口
+    —— _buckets 是全局共享、混着 60s(广告)/3600s(登录)/86400s(日闸)不同窗口的 key;若用调用方窗口,
+    高频的 60s 广告端点触发 GC 时会把本该活 3600s/86400s 的登录/日闸计数一并删掉,使其在规模上(超阈值才
+    触发本清理)被反复清零而失效。仅在超阈值时扫,低频、开销可忽略。"""
+    if len(_buckets) <= _GC_THRESHOLD:
+        return
+    for k in [k for k, (s, _, w) in _buckets.items() if now - s >= w]:
+        _buckets.pop(k, None)
 
 
 def _hit(key: str, limit: int, window_sec: float) -> bool:
     """记一次访问。返回 True=放行,False=超限。"""
     now = time.monotonic()
     with _lock:
-        start, count = _buckets.get(key, (now, 0))
+        start, count, _ = _buckets.get(key, (now, 0, window_sec))
         if now - start >= window_sec:  # 窗口过期,重置
             start, count = now, 0
         count += 1
-        _buckets[key] = (start, count)
-        # 顺手清理过期 key,防内存无限涨(低频访问足够)
-        if len(_buckets) > 10000:
-            for k in [k for k, (s, _) in _buckets.items() if now - s >= window_sec]:
-                _buckets.pop(k, None)
+        _buckets[key] = (start, count, window_sec)
+        _purge_expired(now)  # 顺手清过期 key(按各自窗口),防内存无限涨
     return count <= limit
 
 
@@ -83,3 +95,76 @@ def enforce_rate_limit(
             status_code=status.HTTP_429_TOO_MANY_REQUESTS,
             detail=detail,
         )
+
+
+# ===================== 先判 / 后记(只按「成功」计数)=====================
+# _hit 是原子「判+记」:一调用就 +1,适合登录爆破(失败尝试也要计)。但对「短信发码」这类
+# **只想给成功动作计数**的场景不合适 —— 被单号冷却挡下的重发没真发、没烧钱,不该占额度。
+# 故拆成 _peek(只判不记)+ _commit(只记):check_rate_limits 先判 → 动作 → 成功后 record。
+
+
+class RateLimitRule(NamedTuple):
+    """一条限流规则。scope 区分不同闸(不同 key 前缀);同一 (subject, IP) 在 window_sec
+    内最多 limit 次,超限抛 429 用 detail 文案。
+
+    (scope, window_sec) 成对绑在一条规则里 —— check(先判)与 record(计数)复用同一条,
+    避免两处把窗口/scope 写歪导致 key 对不上。
+    """
+
+    scope: str
+    limit: int
+    window_sec: float
+    detail: str = "操作过于频繁,请稍后再试"
+
+
+def _peek(key: str, limit: int, window_sec: float) -> bool:
+    """只读:当前窗口内是否还没到上限(count < limit)。**不改计数**。
+    与 [_commit] 配对实现「先判后记」——只在动作成功后才 _commit。"""
+    now = time.monotonic()
+    with _lock:
+        start, count, _ = _buckets.get(key, (now, 0, window_sec))
+        if now - start >= window_sec:  # 窗口已过期 → 视作已重置(count 归零)
+            count = 0
+    return count < limit
+
+
+def _commit(key: str, window_sec: float) -> None:
+    """记一次访问(+1)。窗口过期则以本次为起点重置。仅在动作成功后调用。"""
+    now = time.monotonic()
+    with _lock:
+        start, count, _ = _buckets.get(key, (now, 0, window_sec))
+        if now - start >= window_sec:  # 窗口过期,重置
+            start, count = now, 0
+        _buckets[key] = (start, count + 1, window_sec)
+        _purge_expired(now)  # 顺手清过期 key(按各自窗口,同 [_hit])
+
+
+def check_rate_limits(request: Request, subject: str, rules: list[RateLimitRule]) -> None:
+    """【先判】一组限流:任一规则已达上限即抛 429,且**不改计数**。
+
+    配合 [record_rate_limits] 实现「只按成功计数」:先 check 所有闸(全未超才继续)→ 执行动作
+    → 动作**成功后**再 record。动作被下游挡下(如短信单号冷却)、没真正发生时不 record → 不占额度。
+    key = `scope:subject:client_ip`(与 [enforce_rate_limit] 同款)。
+    """
+    if not settings.RATE_LIMIT_ENABLED:
+        return
+    ip = _client_ip(request)
+    for rule in rules:
+        if not _peek(f"{rule.scope}:{subject}:{ip}", rule.limit, rule.window_sec):
+            raise HTTPException(
+                status_code=status.HTTP_429_TOO_MANY_REQUESTS,
+                detail=rule.detail,
+            )
+
+
+def record_rate_limits(request: Request, subject: str, rules: list[RateLimitRule]) -> None:
+    """【记一次】一组限流(每条规则 +1)。仅在动作成功后调用,与 [check_rate_limits] 配对。
+
+    ⚠️ check→动作→record 非原子:并发突发下计数可能略超 limit(每个在途请求各 +1)。对
+    「防脚本/防轰炸」的安全网定位可接受;要精确配额需迁 Redis(见模块 docstring)。
+    """
+    if not settings.RATE_LIMIT_ENABLED:
+        return
+    ip = _client_ip(request)
+    for rule in rules:
+        _commit(f"{rule.scope}:{subject}:{ip}", rule.window_sec)

app/core/security.py

@@ -87,6 +87,91 @@ def issue_token_pair(user_id: int) -> dict[str, Any]:
     }
 
 
+def create_bind_ticket(
+    *, openid: str, wechat_nickname: str | None, wechat_avatar_url: str | None
+) -> str:
+    """微信登录未命中 openid 时,签发短时"待绑手机"令牌,承载 openid + 微信昵称头像。
+
+    typ='wechat_bind'、sub=openid;有效期 settings.WECHAT_BIND_TICKET_EXPIRE_MINUTES 分钟。
+    与 access/refresh 用同一 JWT_SECRET_KEY 签名,靠 typ 区分,decode_bind_ticket 校验 typ。
+    """
+    now = _now()
+    expire = now + timedelta(minutes=settings.WECHAT_BIND_TICKET_EXPIRE_MINUTES)
+    payload: dict[str, Any] = {
+        "sub": openid,
+        "typ": "wechat_bind",
+        "wnk": wechat_nickname,
+        "wav": wechat_avatar_url,
+        "iat": int(now.timestamp()),
+        "exp": int(expire.timestamp()),
+    }
+    return jwt.encode(payload, settings.JWT_SECRET_KEY, algorithm=settings.JWT_ALGORITHM)
+
+
+def decode_bind_ticket(token: str) -> dict[str, Any]:
+    """解析"待绑手机"令牌,校验签名/过期/类型。失败抛 TokenError。
+
+    返回 {'openid': str, 'wnk': str|None, 'wav': str|None}。
+    """
+    try:
+        payload = jwt.decode(token, settings.JWT_SECRET_KEY, algorithms=[settings.JWT_ALGORITHM])
+    except jwt.ExpiredSignatureError as e:
+        raise TokenError("bind ticket expired") from e
+    except jwt.InvalidTokenError as e:
+        raise TokenError(f"invalid bind ticket: {e}") from e
+    if payload.get("typ") != "wechat_bind":
+        raise TokenError(f"wrong token type: want=wechat_bind got={payload.get('typ')}")
+    if "sub" not in payload:
+        raise TokenError("bind ticket missing sub")
+    return {"openid": payload["sub"], "wnk": payload.get("wnk"), "wav": payload.get("wav")}
+
+
+def create_conflict_ticket(
+    *, openid: str, wechat_nickname: str | None, wechat_avatar_url: str | None, phone: str
+) -> str:
+    """手机号占用时签发的短时"冲突处理"令牌。
+
+    比 bind_ticket 多编码 **已验证的手机号 phone** —— 换绑/继续绑定只认它,证明"这对
+    openid/手机号刚在绑号时验证通过",免用户重输验证码,又堵住"拿自己 openid + 任意手机号
+    去夺号"的接管漏洞。typ='wechat_conflict';有效期复用 WECHAT_BIND_TICKET_EXPIRE_MINUTES。
+    """
+    now = _now()
+    expire = now + timedelta(minutes=settings.WECHAT_BIND_TICKET_EXPIRE_MINUTES)
+    payload: dict[str, Any] = {
+        "sub": openid,
+        "typ": "wechat_conflict",
+        "wnk": wechat_nickname,
+        "wav": wechat_avatar_url,
+        "phn": phone,
+        "iat": int(now.timestamp()),
+        "exp": int(expire.timestamp()),
+    }
+    return jwt.encode(payload, settings.JWT_SECRET_KEY, algorithm=settings.JWT_ALGORITHM)
+
+
+def decode_conflict_ticket(token: str) -> dict[str, Any]:
+    """解析"冲突处理"令牌,校验签名/过期/类型。失败抛 TokenError。
+
+    返回 {'openid': str, 'wnk': str|None, 'wav': str|None, 'phone': str}。
+    """
+    try:
+        payload = jwt.decode(token, settings.JWT_SECRET_KEY, algorithms=[settings.JWT_ALGORITHM])
+    except jwt.ExpiredSignatureError as e:
+        raise TokenError("conflict ticket expired") from e
+    except jwt.InvalidTokenError as e:
+        raise TokenError(f"invalid conflict ticket: {e}") from e
+    if payload.get("typ") != "wechat_conflict":
+        raise TokenError(f"wrong token type: want=wechat_conflict got={payload.get('typ')}")
+    if "sub" not in payload or "phn" not in payload:
+        raise TokenError("conflict ticket missing sub/phn")
+    return {
+        "openid": payload["sub"],
+        "wnk": payload.get("wnk"),
+        "wav": payload.get("wav"),
+        "phone": payload["phn"],
+    }
+
+
 # ===================== 密码 hash(admin 后台账号用)=====================
 # 用户侧是手机号+验证码登录,不存密码;仅 admin 账号用 username+password 登录。
 

app/core/wx_poc_signal.py

@@ -1,27 +0,0 @@
-"""微信截图比价 PoC:进程内存的"待比价"信号(单 worker 够用, 重启即失效, PoC 可接受)。
-
-收图端点 set_pending(device_id, source) → 该设备下次心跳 pop_pending 取走并清除 →
-心跳响应带回 → 前端弹选平台窗。只对 settings.WX_POC_TEST_DEVICE_ID 写入, 不碰其他设备。
-后续接真识别 / openid↔device 绑定时整体替换本模块。
-"""
-from __future__ import annotations
-
-import threading
-
-_lock = threading.Lock()
-_pending: dict[str, str] = {}  # device_id -> source_platform(如 "meituan")
-
-
-def set_pending(device_id: str, source_platform: str) -> None:
-    if not device_id:
-        return
-    with _lock:
-        _pending[device_id] = source_platform
-
-
-def pop_pending(device_id: str) -> str | None:
-    """取出并清除该设备的待比价信号;无则 None。心跳每帧调, 取到即消费(只弹一次)。"""
-    if not device_id:
-        return None
-    with _lock:
-        return _pending.pop(device_id, None)

app/integrations/sms.py

@@ -13,7 +13,8 @@ worker / 多机时内存不共享 → 冷却、校验都会失效,届时迁移
 
 防刷两层(短信花钱 + `/sms/send` 在登录前无法 JWT 鉴权):
   1. 单号 `SMS_SEND_INTERVAL_SEC` 冷却(本文件)
-  2. 单设备(device_id)每小时频控(api 层 auth.sms_send 内 enforce_rate_limit)+ 极光控制台 IP 白名单/防轰炸(运维侧)。
+  2. 单设备(device_id)+ IP 每小时 / 每天频控(api 层 auth.sms_send 的 check/record_rate_limits,
+     **只按成功发码计数** —— 被本文件单号冷却挡下的重发不占额度)+ 极光控制台 IP 白名单/防轰炸(运维侧)。
      ⚠️ 原「单 IP 频控(rate_limit 依赖)」2026-06-26 按产品要求删除、改设备维度;但 device_id 客户端可伪造/轮换,
         脚本轮换 id 能绕过本层 → 挡脚本狂发主要靠极光控制台侧(+ 可选 nginx 限流)。
      ⚠️ 原「单号每日上限」2026-07-03 按精简要求删除(mentor 定:登录风控只留单号冷却 + 单设备频控);

app/integrations/wx_kf_client.py

@@ -1,126 +0,0 @@
-"""微信客服(企业微信)API 客户端:access_token 缓存 + sync_msg 拉消息 + 临时素材下载。
-
-对应 api/v1/wx_kf.py:收到 `kf_msg_or_event` 回调后, 用这里的函数增量拉取用户消息。
-  - access_token(7200s)进程内缓存, 提前 300s 刷新(单 worker 够用, 重启即失效)。
-  - sync_msg 游标 next_cursor 按 open_kfid 进程内存续(PoC 重启后从最近 3 天重拉, 可接受)。
-凭证来自 settings(WX_KF_CORP_ID / WX_KF_SECRET);纯外部 HTTP, 不含业务逻辑。
-"""
-from __future__ import annotations
-
-import asyncio
-import logging
-import time
-from typing import Any
-
-import httpx
-
-from app.core.config import settings
-
-logger = logging.getLogger("shagua.wx_kf")
-
-_QYAPI = "https://qyapi.weixin.qq.com/cgi-bin"
-
-# access_token 进程内缓存(单 worker)。token 空 / 未到刷新点直接用。
-_token_lock = asyncio.Lock()
-_token_cache: dict[str, Any] = {"token": "", "expire_at": 0.0}
-
-# sync_msg 游标:open_kfid -> next_cursor(PoC 进程内存;重启从最近 3 天重拉)
-_cursors: dict[str, str] = {}
-
-
-async def _get_access_token() -> str:
-    """取企业微信 access_token, 进程内缓存, 提前 300s 过期刷新。失败返回空串(调用方降级)。"""
-    now = time.time()
-    if _token_cache["token"] and _token_cache["expire_at"] - 300 > now:
-        return _token_cache["token"]
-    async with _token_lock:
-        now = time.time()  # 拿锁后复检, 避免并发重复刷新
-        if _token_cache["token"] and _token_cache["expire_at"] - 300 > now:
-            return _token_cache["token"]
-        try:
-            async with httpx.AsyncClient(timeout=10) as client:
-                resp = await client.get(
-                    f"{_QYAPI}/gettoken",
-                    params={
-                        "corpid": settings.WX_KF_CORP_ID,
-                        "corpsecret": settings.WX_KF_SECRET,
-                    },
-                )
-                data = resp.json()
-        except Exception:
-            logger.exception("wx_kf gettoken 请求失败")
-            return ""
-        if data.get("errcode"):
-            logger.warning(
-                "wx_kf gettoken errcode=%s errmsg=%s", data.get("errcode"), data.get("errmsg")
-            )
-            return ""
-        _token_cache["token"] = data.get("access_token", "")
-        _token_cache["expire_at"] = now + int(data.get("expires_in", 7200))
-        return _token_cache["token"]
-
-
-async def sync_messages(token: str, open_kfid: str) -> list[dict[str, Any]]:
-    """收到 kf_msg_or_event 回调后调用:用回调带的一次性 token 增量拉消息, has_more 循环拉完。
-
-    token:    回调事件里的 <Token>(消息拉取凭证, 非配置 Token;不传会有严格频控)。
-    open_kfid:客服账号 id(回调里的 <OpenKfId>)。
-    返回本次新拉到的 msg_list(已合并多页);游标按 open_kfid 进程内存续。
-    """
-    access_token = await _get_access_token()
-    if not access_token:
-        return []
-    out: list[dict[str, Any]] = []
-    cursor = _cursors.get(open_kfid, "")
-    try:
-        async with httpx.AsyncClient(timeout=15) as client:
-            for _ in range(20):  # 最多 20 页护栏, 防异常时死循环
-                body: dict[str, Any] = {"cursor": cursor, "token": token, "limit": 1000}
-                if open_kfid:
-                    body["open_kfid"] = open_kfid
-                resp = await client.post(
-                    f"{_QYAPI}/kf/sync_msg",
-                    params={"access_token": access_token},
-                    json=body,
-                )
-                data = resp.json()
-                if data.get("errcode"):
-                    logger.warning(
-                        "wx_kf sync_msg errcode=%s errmsg=%s",
-                        data.get("errcode"),
-                        data.get("errmsg"),
-                    )
-                    break
-                out.extend(data.get("msg_list", []))
-                cursor = data.get("next_cursor", cursor)
-                _cursors[open_kfid] = cursor
-                if not data.get("has_more"):
-                    break
-    except Exception:
-        logger.exception("wx_kf sync_msg 请求失败 open_kfid=%s", open_kfid)
-    return out
-
-
-async def download_media(media_id: str) -> bytes | None:
-    """临时素材下载(图片消息只给 media_id)。成功返回二进制, 失败返回 None。"""
-    if not media_id:
-        return None
-    access_token = await _get_access_token()
-    if not access_token:
-        return None
-    try:
-        async with httpx.AsyncClient(timeout=20) as client:
-            resp = await client.get(
-                f"{_QYAPI}/media/get",
-                params={"access_token": access_token, "media_id": media_id},
-            )
-            resp.raise_for_status()
-            # 成功=二进制文件流;失败=JSON(errcode)。据 Content-Type 区分。
-            ctype = resp.headers.get("Content-Type", "")
-            if "application/json" in ctype or "text/plain" in ctype:
-                logger.warning("wx_kf media/get 非文件响应: %s", resp.text[:200])
-                return None
-            return resp.content
-    except Exception:
-        logger.exception("wx_kf media/get 下载失败 media_id=%s", media_id)
-        return None

app/integrations/wx_mp_crypto.py

@@ -1,69 +0,0 @@
-"""微信服务号消息接收回调的验签与解密(安全模式)。
-
-服务号"服务器配置"选安全模式后:
-  - URL 接入验证(GET): sha1(sort(token, timestamp, nonce)) == signature → 原样返回 echostr
-  - 消息(POST): body 里 <Encrypt> 是密文;
-      msg_signature = sha1(sort(token, timestamp, nonce, encrypt))
-      密文 AES-256-CBC 解出: random(16B) + msg_len(4B big-endian) + msg + appid, 去 PKCS7(块=32) padding
-
-只做验签 + 解密(收消息)。被动回复(加密)MVP 不需要 —— 收到后走客服消息异步回执。
-密钥/口令来自 settings(WX_MP_TOKEN / WX_MP_AES_KEY / WX_MP_APPID),本模块只做纯算法、不读配置。
-"""
-from __future__ import annotations
-
-import base64
-import hashlib
-import hmac
-
-from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
-
-
-def verify_url_signature(token: str, timestamp: str, nonce: str, signature: str) -> bool:
-    """GET 接入验证:token/timestamp/nonce 三者字典序排序拼接后 sha1。"""
-    return _consteq(_sha1(token, timestamp, nonce), signature)
-
-
-def verify_msg_signature(
-    token: str, timestamp: str, nonce: str, encrypt: str, msg_signature: str
-) -> bool:
-    """POST 消息验签:四者(含密文 encrypt)字典序排序拼接后 sha1。"""
-    return _consteq(_sha1(token, timestamp, nonce, encrypt), msg_signature)
-
-
-def decrypt_message(aes_key_b64: str, expected_appid: str, encrypt_b64: str) -> str:
-    """解密 <Encrypt> 密文, 返回明文消息 XML。appid 不符抛 ValueError。
-
-    aes_key_b64: EncodingAESKey(43 位, 不含结尾 '='), 补 '=' 后 base64 解出 32 字节 AES-256 key。
-    """
-    aes_key = base64.b64decode(aes_key_b64 + "=")  # 43 → 32 bytes
-    iv = aes_key[:16]
-    decryptor = Cipher(algorithms.AES(aes_key), modes.CBC(iv)).decryptor()
-    plain = decryptor.update(base64.b64decode(encrypt_b64)) + decryptor.finalize()
-    plain = _pkcs7_unpad(plain)
-
-    # random(16) + msg_len(4, big-endian) + msg(msg_len) + from_appid
-    content = plain[16:]
-    msg_len = int.from_bytes(content[:4], "big")
-    msg = content[4 : 4 + msg_len]
-    from_appid = content[4 + msg_len :].decode("utf-8")
-    if expected_appid and from_appid != expected_appid:
-        raise ValueError(f"appid mismatch: {from_appid!r} != {expected_appid!r}")
-    return msg.decode("utf-8")
-
-
-def _sha1(*parts: str) -> str:
-    return hashlib.sha1("".join(sorted(parts)).encode("utf-8")).hexdigest()
-
-
-def _consteq(a: str, b: str) -> bool:
-    return hmac.compare_digest(a, b)
-
-
-def _pkcs7_unpad(data: bytes) -> bytes:
-    """微信用块大小 32 的 PKCS7,末字节即 padding 长度(1..32)。越界则原样返回(容错)。"""
-    if not data:
-        return data
-    pad = data[-1]
-    if pad < 1 or pad > 32:
-        return data
-    return data[:-pad]

app/main.py

@@ -39,8 +39,6 @@ from app.api.v1.signin import router as signin_router
 from app.api.v1.tasks import router as tasks_router
 from app.api.v1.user import router as user_router
 from app.api.v1.wallet import router as wallet_router
-from app.api.v1.wx_kf import router as wx_kf_router
-from app.api.v1.wx_mp import router as wx_mp_router
 from app.api.v1.wxpay import router as wxpay_router
 from app.core.config import settings
 from app.core.daily_exchange_worker import (
@@ -142,10 +140,6 @@ app.include_router(internal_launch_confirm_router)
 app.include_router(platform_router)
 # CPS 群发短链跳转 /c/{code}(公网无鉴权:记点击 → 302 跳美团)
 app.include_router(cps_redirect_router)
-# 微信服务号消息接收回调 /wx/mp/callback(公网无鉴权:微信服务器验签, 截图比价入口)
-app.include_router(wx_mp_router)
-# 微信客服(企业微信)消息接收回调 /wx/kf/callback(服务号版的平行实现, 收事件→sync_msg 拉图)
-app.include_router(wx_kf_router)
 
 # 用户上传文件(头像)静态服务。生产可改由 nginx 直接 serve MEDIA_ROOT。
 _media_root = Path(settings.MEDIA_ROOT)

app/models/__init__.py

@@ -32,6 +32,7 @@ from app.models.invite_fingerprint import InviteFingerprint  # noqa: F401
 from app.models.launch_confirm_sample import LaunchConfirmSample  # noqa: F401
 from app.models.meituan_coupon import MeituanCoupon  # noqa: F401
 from app.models.onboarding import OnboardingCompletion  # noqa: F401
+from app.models.phone_rebind_log import PhoneRebindLog  # noqa: F401
 from app.models.ops_marquee_seed import OpsMarqueeSeed  # noqa: F401
 from app.models.ops_stat_config import OpsStatConfig  # noqa: F401
 from app.models.price_observation import PriceObservation  # noqa: F401

app/models/phone_rebind_log.py

@@ -0,0 +1,31 @@
+"""手机号换绑台账。
+
+记录"手机号从老账号被夺走、重建为新账号(X 注销 → Y)"这一破坏性事件,支撑"一个手机号
+30 天内最多换绑一次"的限制。手机号级、渠道无关(source 标来源);普通微信绑定不写此表。
+见 M2 spec §4.1。
+"""
+from __future__ import annotations
+
+from datetime import datetime
+
+from sqlalchemy import DateTime, Integer, String, func
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.db.base import Base
+
+
+class PhoneRebindLog(Base):
+    __tablename__ = "phone_rebind_log"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    # 被换绑的真实手机号(注意:存真实号,不是老账号被腾号后的 deleted_<id>)
+    phone: Mapped[str] = mapped_column(String(20), index=True, nullable=False)
+    # 被注销的老账号 X;P 换绑时已被腾空(极边界)则为空
+    old_user_id: Mapped[int | None] = mapped_column(Integer, nullable=True)
+    # 换绑后新建的账号 Y
+    new_user_id: Mapped[int] = mapped_column(Integer, nullable=False)
+    # 换绑来源。手机号级配额、渠道无关,留字段给未来其他换绑路径共用同一份 30 天限制。
+    source: Mapped[str] = mapped_column(String(32), nullable=False, default="wechat_conflict")
+    rebound_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), server_default=func.now(), index=True, nullable=False
+    )

app/repositories/phone_rebind.py

@@ -0,0 +1,39 @@
+"""手机号换绑台账(phone_rebind_log)的查询与写入。见 M2 spec §4.1。"""
+from __future__ import annotations
+
+import math
+from datetime import datetime, timedelta, timezone
+
+from sqlalchemy import func, select
+from sqlalchemy.orm import Session
+
+from app.models.phone_rebind_log import PhoneRebindLog
+
+
+def rebound_within_days(db: Session, phone: str, days: int) -> bool:
+    """该手机号在最近 days 天内是否换绑过(命中 → 禁止再次换绑)。"""
+    since = datetime.now(timezone.utc) - timedelta(days=days)
+    stmt = (
+        select(PhoneRebindLog.id)
+        .where(PhoneRebindLog.phone == phone, PhoneRebindLog.rebound_at >= since)
+        .limit(1)
+    )
+    return db.execute(stmt).first() is not None
+
+
+def remaining_block_days(db: Session, phone: str, days: int) -> int:
+    """距离该手机号可再次换绑还剩几天(向上取整;无记录返回 0)。"""
+    last = db.execute(
+        select(func.max(PhoneRebindLog.rebound_at)).where(PhoneRebindLog.phone == phone)
+    ).scalar_one_or_none()
+    if last is None:
+        return 0
+    if last.tzinfo is None:  # SQLite 取回 naive datetime,按 UTC 归一
+        last = last.replace(tzinfo=timezone.utc)
+    remaining = (last + timedelta(days=days) - datetime.now(timezone.utc)).total_seconds()
+    return max(0, math.ceil(remaining / 86400))
+
+
+def add_rebind_log(db: Session, *, phone: str, old_user_id: int | None, new_user_id: int, source: str) -> None:
+    """写一条换绑台账(**不 commit**,交给调用方 rebind_account 的单事务)。"""
+    db.add(PhoneRebindLog(phone=phone, old_user_id=old_user_id, new_user_id=new_user_id, source=source))

app/repositories/user.py

@@ -12,6 +12,7 @@ from sqlalchemy import select
 from sqlalchemy.orm import Session
 
 from app.models.user import User
+from app.repositories import phone_rebind
 
 
 # ===== 创建时分配的标识:用户名(对外展示账号 ID)+ 默认昵称 =====
@@ -58,6 +59,17 @@ def is_default_nickname(nickname: str | None) -> bool:
     )
 
 
+def apply_wechat_display_identity(
+    user: User, *, wechat_nickname: str | None, wechat_avatar_url: str | None
+) -> None:
+    """§10:用已有账号绑微信时,仅当展示字段仍为默认才用微信昵称/头像替换(两规则独立);
+    自定义(改过昵称/传过头像)则保留。只改内存对象,由调用方 commit。"""
+    if is_default_nickname(user.nickname) and wechat_nickname:
+        user.nickname = wechat_nickname
+    if user.avatar_url is None and wechat_avatar_url:
+        user.avatar_url = wechat_avatar_url
+
+
 def get_user_by_username(db: Session, username: str) -> User | None:
     return db.execute(
         select(User).where(User.username == username)
@@ -86,6 +98,85 @@ def get_user_by_phone(db: Session, phone: str) -> User | None:
     return db.execute(stmt).scalar_one_or_none()
 
 
+def get_user_by_wechat_openid(db: Session, openid: str) -> User | None:
+    stmt = select(User).where(User.wechat_openid == openid)
+    return db.execute(stmt).scalar_one_or_none()
+
+
+def touch_last_login(db: Session, user: User) -> User:
+    """openid 命中登录时更新 last_login_at(手机号登录在 upsert_user_for_login 里已更新)。"""
+    user.last_login_at = datetime.now(timezone.utc)
+    db.commit()
+    db.refresh(user)
+    return user
+
+
+def attach_wechat_to_user(
+    db: Session, user: User, *, openid: str, wechat_nickname: str | None, wechat_avatar_url: str | None
+) -> User:
+    """继续绑定:把微信 openid + 微信源字段并入已存在账号(调用方保证 user.wechat_openid 为空)。
+
+    写 wechat_openid / wechat_nickname / wechat_avatar_url,并按 §10 规则回填展示字段:
+    仅当昵称仍为默认值(is_default_nickname)时用微信昵称替换,仅当头像为 null 时用微信头像替换;
+    用户已自定义的展示昵称/头像始终保留,两规则相互独立。
+    撞 openid 唯一约束(O 期间被别处绑走,极罕见)时由调用方捕获 IntegrityError 兜底降级为"只登入不绑"。
+    """
+    user.wechat_openid = openid
+    user.wechat_nickname = wechat_nickname
+    user.wechat_avatar_url = wechat_avatar_url
+    user.last_login_at = datetime.now(timezone.utc)
+    apply_wechat_display_identity(user, wechat_nickname=wechat_nickname, wechat_avatar_url=wechat_avatar_url)
+    db.commit()
+    db.refresh(user)
+    return user
+
+
+def _build_wechat_user(
+    db: Session,
+    *,
+    phone: str,
+    openid: str,
+    wechat_nickname: str | None,
+    wechat_avatar_url: str | None,
+) -> User:
+    """构造并 db.add 一个微信账号行(register_channel='wechat',展示昵称头像取微信,缺则默认),
+    **不 commit**。create_wechat_user 与 rebind_account 共用,保证建号逻辑单一来源。"""
+    user = User(
+        phone=phone,
+        username=_gen_unique_username(db),
+        nickname=wechat_nickname or _gen_nickname(),
+        avatar_url=wechat_avatar_url,
+        register_channel="wechat",
+        wechat_openid=openid,
+        wechat_nickname=wechat_nickname,
+        wechat_avatar_url=wechat_avatar_url,
+        last_login_at=datetime.now(timezone.utc),
+    )
+    db.add(user)
+    return user
+
+
+def create_wechat_user(
+    db: Session,
+    *,
+    phone: str,
+    openid: str,
+    wechat_nickname: str | None,
+    wechat_avatar_url: str | None,
+) -> User:
+    """微信登录新建账号(未占用分支)。见 _build_wechat_user。
+
+    openid 唯一约束是并发/重复绑定的最终防线(极罕见,openid 在 wechat-login 刚查过为空)。
+    """
+    user = _build_wechat_user(
+        db, phone=phone, openid=openid,
+        wechat_nickname=wechat_nickname, wechat_avatar_url=wechat_avatar_url,
+    )
+    db.commit()
+    db.refresh(user)
+    return user
+
+
 def upsert_user_for_login(
     db: Session,
     *,
@@ -154,3 +245,44 @@ def soft_delete_account(db: Session, user: User) -> None:
     # 释放邀请码唯一槽
     user.invite_code = None
     db.commit()
+
+
+def rebind_account(
+    db: Session,
+    *,
+    phone: str,
+    openid: str,
+    wechat_nickname: str | None,
+    wechat_avatar_url: str | None,
+    source: str = "wechat_conflict",
+) -> User:
+    """换绑:**单事务内**注销老账号 X(腾出手机号)+ 用该号建全新微信账号 Y + 写换绑台账。
+
+    - 老账号可能已不存在(P 被腾空)→ old_user_id=None,直接建 Y(幂等更稳)。
+    - 手机号唯一约束靠时序:先把 X.phone 改名并 flush 腾号,再插 Y。
+    - 全程不中途 commit,任一步失败整体回滚,绝不出现"X 删了 Y 没建"。
+    X 的字段变更等价 soft_delete_account(软删 + 匿名化 + 释放 openid/邀请码唯一槽),但不在此 commit。
+    """
+    old = get_user_by_phone(db, phone)
+    old_id = old.id if old is not None else None
+    if old is not None:
+        old.status = "deleted"
+        old.phone = f"deleted_{old.id}"
+        old.nickname = None
+        old.avatar_url = None
+        old.wechat_openid = None
+        old.wechat_nickname = None
+        old.wechat_avatar_url = None
+        old.invite_code = None
+        db.flush()  # 先落 phone 改名,腾出手机号唯一约束,才能给 Y 用
+    new_user = _build_wechat_user(
+        db, phone=phone, openid=openid,
+        wechat_nickname=wechat_nickname, wechat_avatar_url=wechat_avatar_url,
+    )
+    db.flush()  # 拿 new_user.id
+    phone_rebind.add_rebind_log(
+        db, phone=phone, old_user_id=old_id, new_user_id=new_user.id, source=source
+    )
+    db.commit()
+    db.refresh(new_user)
+    return new_user

app/repositories/wallet.py

@@ -20,6 +20,7 @@ from app.core.config import settings
 from app.core.rewards import COIN_PER_CENT, coins_to_cents
 from app.integrations import wxpay
 from app.models.user import User
+from app.repositories.user import apply_wechat_display_identity
 from app.models.wallet import (
     CashTransaction,
     CoinAccount,
@@ -374,6 +375,7 @@ def bind_wechat_openid(db: Session, user_id: int, code: str) -> dict:
     user.wechat_openid = info["openid"]
     user.wechat_nickname = info["nickname"]
     user.wechat_avatar_url = info["avatar_url"]
+    apply_wechat_display_identity(user, wechat_nickname=info["nickname"], wechat_avatar_url=info["avatar_url"])
     db.commit()
     return info
 

app/schemas/auth.py

@@ -102,3 +102,64 @@ class RefreshRequest(BaseModel):
 
 class LogoutResponse(BaseModel):
     ok: bool = True
+
+
+# ===== 微信登录 =====
+
+class WechatLoginRequest(BaseModel):
+    code: str = Field(..., min_length=1, description="微信 App 授权拿到的 code(单次有效)")
+    device_id: str = Field(
+        "", max_length=64,
+        description="硬件级设备标识(Android ANDROID_ID),用于新手引导按 设备+账号 去重;空=按未完成处理",
+    )
+
+
+class WechatLoginResponse(BaseModel):
+    # status="logged_in" → openid 命中,token 有值;"need_bind_phone" → 未命中,bind_ticket 有值
+    status: str
+    token: TokenWithUser | None = None
+    bind_ticket: str | None = None
+    wechat_nickname: str | None = None
+    wechat_avatar_url: str | None = None
+
+
+class OccupiedAccountInfo(BaseModel):
+    """手机号被占用时返回的原账号脱敏展示信息(供冲突页)。"""
+    nickname: str | None = None
+    avatar_url: str | None = None
+    created_at: datetime
+    has_wechat: bool = False
+
+
+class WechatBindResultResponse(BaseModel):
+    # status="logged_in" → 未占用,已建号登入,token 有值;
+    # "phone_occupied" → 手机号被占用,occupied_account + conflict_ticket 有值,token 为 None
+    status: str
+    token: TokenWithUser | None = None
+    occupied_account: OccupiedAccountInfo | None = None
+    conflict_ticket: str | None = None            # 占用时签发,换绑/继续绑定只认它
+    rebind_available: bool | None = None          # 该手机号 30 天内是否还能换绑(给换绑按钮预置禁用态)
+    rebind_blocked_days: int | None = None        # 被限时剩余天数(rebind_available=False 时>0)
+
+
+class WechatBindPhoneSmsRequest(BaseModel):
+    bind_ticket: str = Field(..., min_length=1)
+    phone: str = Field(..., min_length=11, max_length=11, pattern=r"^1\d{10}$")
+    code: str = Field(..., min_length=4, max_length=8)
+    device_id: str = Field("", max_length=64)
+
+
+class WechatBindPhoneJverifyRequest(BaseModel):
+    bind_ticket: str = Field(..., min_length=1)
+    login_token: str = Field(..., min_length=1, description="客户端 loginAuth 拿到的 loginToken")
+    device_id: str = Field("", max_length=64)
+
+
+class WechatConflictContinueRequest(BaseModel):
+    conflict_ticket: str = Field(..., min_length=1)
+    device_id: str = Field("", max_length=64)
+
+
+class WechatConflictRebindRequest(BaseModel):
+    conflict_ticket: str = Field(..., min_length=1)
+    device_id: str = Field("", max_length=64)

app/schemas/device.py

@@ -36,20 +36,6 @@ class OkResponse(BaseModel):
     ok: bool = True
 
 
-class PendingCompare(BaseModel):
-    """PoC:后端通过心跳下发的"用户要从某源平台比价"信号。前端据此弹选平台窗 + launch 源平台。"""
-    source_platform: str            # pricebot 源平台代号(PoC 写死 "meituan")
-    source_package: str             # 源平台 Android 包名(前端 launch 用)
-
-
-class HeartbeatResponse(BaseModel):
-    """心跳响应。常规只回 ok;PoC 期带回 pending_compare 触发比价(exclude_none 省略 null)。"""
-    model_config = ConfigDict()
-
-    ok: bool = True
-    pending_compare: PendingCompare | None = None
-
-
 class LivenessOut(BaseModel):
     """本机掉线告警状态(后置检测 pull 版)。客户端只需这一个布尔判断要不要弹「开启自启动」引导,
     故只返回 kill_alert_pending(不暴露设备详情 / 内部 liveness_state 等)。从未注册过 → 默认 False(无告警)。"""

tests/test_auth.py

@@ -107,6 +107,67 @@ def test_sms_send_device_ip_rate_limit(client, monkeypatch) -> None:
     assert r.status_code == 200, r.text
 
 
+def test_sms_send_cooldown_reject_not_counted(client, monkeypatch) -> None:
+    """发码额度只算「成功发码」:被单号 60s 冷却挡下的重发(429)不占设备额度。
+    做法:同号狂发只成功 1 次、其余被冷却挡下;把小时额度设 2,证明换号后仍能再成功发 1 次
+    —— 若冷却重发也计数,额度早被那几次耗尽。"""
+    from app.api.v1 import auth
+    from app.core import ratelimit
+
+    monkeypatch.setattr(ratelimit.settings, "RATE_LIMIT_ENABLED", True)
+    monkeypatch.setattr(auth, "SMS_SEND_MAX_PER_HOUR_PER_DEVICE", 2)
+    ratelimit._buckets.clear()
+
+    device = "dev-cooldown"
+    phone_a = "13710137000"
+    # 首发成功(小时闸计 1/2)
+    assert client.post(
+        "/api/v1/auth/sms/send", json={"phone": phone_a, "device_id": device}
+    ).status_code == 200
+    # 同号连发 3 次:都被单号 60s 冷却挡下 → 429,且**不占**设备额度
+    for _ in range(3):
+        r = client.post(
+            "/api/v1/auth/sms/send", json={"phone": phone_a, "device_id": device}
+        )
+        assert r.status_code == 429, r.text
+    # 换号再发:设备额度只用了 1/2(冷却那几次没算)→ 仍放行(计到 2/2)
+    assert client.post(
+        "/api/v1/auth/sms/send", json={"phone": "13710137001", "device_id": device}
+    ).status_code == 200
+    # 又换号:此时小时闸已 2/2 → 429(反证成功发码确实各计了 1)
+    r = client.post(
+        "/api/v1/auth/sms/send", json={"phone": "13710137002", "device_id": device}
+    )
+    assert r.status_code == 429, r.text
+
+
+def test_sms_send_daily_cap(client, monkeypatch) -> None:
+    """每天发码上限(设备 + IP):成功发码累计到日上限即 429(用不同手机号绕开单号冷却)。
+    抬高小时闸单独测日闸;超限文案含「今日」以便前端提示明天再来。"""
+    from app.api.v1 import auth
+    from app.core import ratelimit
+
+    monkeypatch.setattr(ratelimit.settings, "RATE_LIMIT_ENABLED", True)
+    monkeypatch.setattr(auth, "SMS_SEND_MAX_PER_HOUR_PER_DEVICE", 100)  # 抬高小时闸,不干扰
+    monkeypatch.setattr(auth, "SMS_SEND_MAX_PER_DAY_PER_DEVICE", 3)
+    ratelimit._buckets.clear()
+
+    device = "dev-daily"
+    for i in range(3):
+        r = client.post(
+            "/api/v1/auth/sms/send",
+            json={"phone": f"13720137{i:03d}", "device_id": device},
+        )
+        assert r.status_code == 200, f"第 {i + 1} 次应放行: {r.text}"
+    # 第 4 次:同设备同 IP 当日超限 → 429
+    r = client.post(
+        "/api/v1/auth/sms/send",
+        json={"phone": "13720137999", "device_id": device},
+    )
+    assert r.status_code == 429, r.text
+    assert "今日" in r.json()["detail"]
+
+
 def test_sms_login_device_ip_rate_limit(client, monkeypatch) -> None:
     """防刷:同一设备(device_id) + 同一 IP 每小时最多 SMS_LOGIN_MAX_PER_HOUR 次登录尝试,超出 429。
     conftest 默认 RATE_LIMIT_ENABLED=false(内存计数跨用例累加),本用例临时打开并清空计数隔离。"""

tests/test_ratelimit.py

@@ -0,0 +1,57 @@
+"""ratelimit 内存桶过期清理(GC)测试。
+
+回归重点:_buckets 是**全局共享**、混着不同窗口(60s 广告 / 3600s 登录 / 86400s 日闸)的 key。
+GC 必须按【每个 key 自己存的 window_sec】判过期,而不是当前调用方的窗口 —— 否则高频的 60s 端点
+触发 GC 时会把本该存活更久的 3600s/86400s 计数(如短信日闸)一并删掉,使其被反复清零、限流失效。
+用 monkeypatch 把 _GC_THRESHOLD 调 0 强制每次都扫,免造上万条(仿 test_auth 里对 sms._GC_THRESHOLD 的做法)。
+"""
+from __future__ import annotations
+
+from app.core import ratelimit
+
+
+def test_purge_expired_respects_each_key_own_window(monkeypatch) -> None:
+    """短窗口(60s)触发的 GC 只删真正过期的 key,不得删掉仍在自身窗口内的长窗口 key。"""
+    monkeypatch.setattr(ratelimit, "_GC_THRESHOLD", 0)  # 强制每次都扫
+    ratelimit._buckets.clear()
+
+    now = 1_000_000.0
+    # 日闸:100s 前开窗、window=86400 → 远未过期,必须保留
+    ratelimit._buckets["sms-send-device-daily:D:IP"] = (now - 100, 7, 86400.0)
+    # 登录:1800s、window=3600 → 未过期,保留
+    ratelimit._buckets["sms-login-device:D:IP"] = (now - 1800, 2, 3600.0)
+    # 广告:120s、window=60 → 已过期,应删
+    ratelimit._buckets["ad-watch-report:IP2"] = (now - 120, 3, 60.0)
+
+    ratelimit._purge_expired(now)
+
+    assert "sms-send-device-daily:D:IP" in ratelimit._buckets
+    assert "sms-login-device:D:IP" in ratelimit._buckets
+    assert "ad-watch-report:IP2" not in ratelimit._buckets
+
+
+def test_purge_expired_keeps_long_window_key_older_than_short_window(monkeypatch) -> None:
+    """反证旧 bug:日闸 key 已老于 3600s,旧代码在 60s/3600s 端点触发 GC 时会误删它;
+    现在按自身 86400s 窗口判 → 未过期 → 必须保留。"""
+    monkeypatch.setattr(ratelimit, "_GC_THRESHOLD", 0)
+    ratelimit._buckets.clear()
+
+    now = 2_000_000.0
+    # 3700s 前开窗(> 1 小时),但 window=86400 → 未过期
+    ratelimit._buckets["sms-send-device-daily:D:IP"] = (now - 3700, 20, 86400.0)
+
+    ratelimit._purge_expired(now)
+
+    assert "sms-send-device-daily:D:IP" in ratelimit._buckets
+
+
+def test_purge_expired_noop_below_threshold(monkeypatch) -> None:
+    """未超阈值时不扫(即便有过期 key 也不动),避免每次请求都 O(n) 扫全表。"""
+    monkeypatch.setattr(ratelimit, "_GC_THRESHOLD", 10)
+    ratelimit._buckets.clear()
+
+    now = 3_000_000.0
+    ratelimit._buckets["stale:IP"] = (now - 999, 1, 60.0)  # 早过期,但没超阈值
+    ratelimit._purge_expired(now)
+
+    assert "stale:IP" in ratelimit._buckets  # 桶数没超阈值 → 不清理

tests/test_wechat_conflict.py

@@ -0,0 +1,232 @@
+"""微信登录 M2 测试:conflict_ticket 令牌、继续绑定(attach/只登入)、换绑(建号+软删+30天限)。
+
+沿用 tests/test_wechat_login.py 风格:HTTP 走 client;微信 code→openid 用 monkeypatch;
+短信走 SMS_MOCK(任意 6 位过)。数据变更用"再走一遍 wechat-login 看 openid 落在哪个账号"做行为断言。
+"""
+from __future__ import annotations
+
+import pytest
+
+from app.api.v1 import auth  # noqa: F401  (后续测试打桩 verify_and_get_phone 用)
+from app.core import security
+from app.integrations import wxpay
+from app.models.phone_rebind_log import PhoneRebindLog
+
+
+def _fake_userinfo(openid: str, nickname: str | None = "微信昵称", avatar: str | None = "http://x/a.png"):
+    def _f(code: str) -> dict:
+        return {"openid": openid, "nickname": nickname, "avatar_url": avatar, "raw": {}}
+    return _f
+
+
+def _sms_occupy(client, phone: str) -> int:
+    """用普通短信登录占用一个手机号(register_channel=sms),返回该账号 id。"""
+    assert client.post("/api/v1/auth/sms/send", json={"phone": phone}).status_code == 200
+    r = client.post("/api/v1/auth/sms/login", json={"phone": phone, "code": "123456"})
+    assert r.status_code == 200, r.text
+    return r.json()["user"]["id"]
+
+
+def _occupy_via_conflict(client, monkeypatch, openid: str, phone: str, device_id: str) -> dict:
+    """微信登录(新 openid)→ 绑同一手机号 → 返回 phone_occupied 的响应体(含 conflict_ticket)。"""
+    monkeypatch.setattr(wxpay, "code_to_userinfo", _fake_userinfo(openid))
+    ticket = client.post(
+        "/api/v1/auth/wechat-login", json={"code": "c", "device_id": device_id}
+    ).json()["bind_ticket"]
+    r = client.post(
+        "/api/v1/auth/wechat/bind-phone/sms",
+        json={"bind_ticket": ticket, "phone": phone, "code": "123456", "device_id": device_id},
+    )
+    assert r.status_code == 200, r.text
+    body = r.json()
+    assert body["status"] == "phone_occupied"
+    return body
+
+
+# ===== Task 1: 模型可导入(建表由 conftest 的 create_all 完成) =====
+
+def test_phone_rebind_log_model_importable() -> None:
+    assert PhoneRebindLog.__tablename__ == "phone_rebind_log"
+
+
+# ===== Task 2: conflict_ticket 令牌 =====
+
+def test_conflict_ticket_roundtrip() -> None:
+    token = security.create_conflict_ticket(
+        openid="oid1", wechat_nickname="昵", wechat_avatar_url="http://a", phone="13900139000"
+    )
+    claims = security.decode_conflict_ticket(token)
+    assert claims["openid"] == "oid1"
+    assert claims["wnk"] == "昵"
+    assert claims["wav"] == "http://a"
+    assert claims["phone"] == "13900139000"
+
+
+def test_conflict_ticket_wrong_type_rejected() -> None:
+    # bind_ticket 冒充 conflict_ticket → TokenError(typ 不匹配)
+    bind = security.create_bind_ticket(openid="oid", wechat_nickname=None, wechat_avatar_url=None)
+    with pytest.raises(security.TokenError):
+        security.decode_conflict_ticket(bind)
+
+
+def test_conflict_ticket_expired_rejected(monkeypatch) -> None:
+    monkeypatch.setattr(security.settings, "WECHAT_BIND_TICKET_EXPIRE_MINUTES", -1)
+    token = security.create_conflict_ticket(
+        openid="oid", wechat_nickname=None, wechat_avatar_url=None, phone="13900139000"
+    )
+    with pytest.raises(security.TokenError):
+        security.decode_conflict_ticket(token)
+
+
+# ===== Task 3: 占用响应扩展 =====
+
+def test_phone_occupied_returns_conflict_ticket_and_flags(client, monkeypatch) -> None:
+    phone = "13900139101"
+    _sms_occupy(client, phone)  # 老账号 X(sms,无微信)
+    body = _occupy_via_conflict(client, monkeypatch, "openid_occ_101", phone, "devO1")
+    assert body["conflict_ticket"]
+    assert body["rebind_available"] is True      # 首次,未换绑过
+    assert body["rebind_blocked_days"] == 0
+    assert body["occupied_account"]["has_wechat"] is False  # X 是 sms 账号
+
+
+# ===== Task 4: 继续绑定 =====
+
+def test_continue_attaches_wechat_and_logs_into_existing(client, monkeypatch) -> None:
+    """X 无微信 → 继续绑定并入 openid + 登入 X;之后同 openid 登录直接命中 X。"""
+    phone = "13900139201"
+    x_id = _sms_occupy(client, phone)  # X:sms 账号,无微信
+    body = _occupy_via_conflict(client, monkeypatch, "openid_cont_201", phone, "devC1")
+
+    r = client.post(
+        "/api/v1/auth/wechat/conflict/continue",
+        json={"conflict_ticket": body["conflict_ticket"], "device_id": "devC1"},
+    )
+    assert r.status_code == 200, r.text
+    assert r.json()["status"] == "logged_in"
+    assert r.json()["token"]["user"]["id"] == x_id  # 登入的是老账号 X
+
+    # openid 现已并入 X:再走 wechat-login 直接命中 X
+    r = client.post("/api/v1/auth/wechat-login", json={"code": "c", "device_id": "devC1"})
+    assert r.json()["status"] == "logged_in"
+    assert r.json()["token"]["user"]["id"] == x_id
+
+
+def test_continue_when_existing_has_wechat_logs_in_and_discards_openid(client, monkeypatch) -> None:
+    """X 已绑别的微信 → 继续绑定只登入 X、丢弃本次 openid(不覆盖)。"""
+    phone = "13900139202"
+    # 先建一个已绑微信 O1 的账号 X(微信登录 O1 + 短信绑号)
+    monkeypatch.setattr(wxpay, "code_to_userinfo", _fake_userinfo("openid_o1_202"))
+    t = client.post("/api/v1/auth/wechat-login", json={"code": "c", "device_id": "devC2"}).json()["bind_ticket"]
+    x = client.post(
+        "/api/v1/auth/wechat/bind-phone/sms",
+        json={"bind_ticket": t, "phone": phone, "code": "123456", "device_id": "devC2"},
+    ).json()
+    x_id = x["token"]["user"]["id"]
+
+    # 新 openid O2 撞同号 → 占用(has_wechat=True)→ 继续绑定
+    body = _occupy_via_conflict(client, monkeypatch, "openid_o2_202", phone, "devC2b")
+    assert body["occupied_account"]["has_wechat"] is True
+    r = client.post(
+        "/api/v1/auth/wechat/conflict/continue",
+        json={"conflict_ticket": body["conflict_ticket"], "device_id": "devC2b"},
+    )
+    assert r.status_code == 200, r.text
+    assert r.json()["token"]["user"]["id"] == x_id  # 登入 X
+
+    # O2 被丢弃:再走 wechat-login(O2)→ 仍未命中(need_bind_phone)
+    monkeypatch.setattr(wxpay, "code_to_userinfo", _fake_userinfo("openid_o2_202"))
+    assert client.post(
+        "/api/v1/auth/wechat-login", json={"code": "c", "device_id": "devC2b"}
+    ).json()["status"] == "need_bind_phone"
+
+
+def test_continue_expired_ticket_returns_401(client, monkeypatch) -> None:
+    monkeypatch.setattr(security.settings, "WECHAT_BIND_TICKET_EXPIRE_MINUTES", -1)
+    expired = security.create_conflict_ticket(
+        openid="oid", wechat_nickname=None, wechat_avatar_url=None, phone="13900139209"
+    )
+    r = client.post(
+        "/api/v1/auth/wechat/conflict/continue",
+        json={"conflict_ticket": expired, "device_id": "devC3"},
+    )
+    assert r.status_code == 401, r.text
+
+
+# ===== Task 5: 换绑 =====
+
+def test_rebind_creates_new_account_and_binds_openid(client, monkeypatch) -> None:
+    """换绑 → 建全新微信账号 Y(≠X)+ openid 落到 Y;老账号 X 被注销(手机号归 Y)。"""
+    phone = "13900139301"
+    x_id = _sms_occupy(client, phone)
+    body = _occupy_via_conflict(client, monkeypatch, "openid_rb_301", phone, "devR1")
+
+    r = client.post(
+        "/api/v1/auth/wechat/conflict/rebind",
+        json={"conflict_ticket": body["conflict_ticket"], "device_id": "devR1"},
+    )
+    assert r.status_code == 200, r.text
+    y = r.json()["token"]["user"]
+    assert r.json()["status"] == "logged_in"
+    assert y["phone"] == phone
+    assert y["register_channel"] == "wechat"
+    assert y["id"] != x_id  # 是全新账号,不是老账号
+
+    # openid 落到 Y:再走 wechat-login 命中 Y
+    r = client.post("/api/v1/auth/wechat-login", json={"code": "c", "device_id": "devR1"})
+    assert r.json()["status"] == "logged_in"
+    assert r.json()["token"]["user"]["id"] == y["id"]
+
+
+# ===== §10: continue 路径也应用展示身份回填规则 =====
+
+def test_continue_applies_section10(client, monkeypatch) -> None:
+    """§10 via M2 attach 路径: X 是默认昵称+null头像的 sms 账号;
+    continue 绑定微信后,展示昵称/头像应被微信值替换,并体现在响应的 token.user 中。"""
+    phone = "13900139211"
+    _sms_occupy(client, phone)  # 建 X:默认昵称, null avatar
+    body = _occupy_via_conflict(
+        client, monkeypatch, "openid_s10", phone, "devS10"
+    )  # fake_userinfo 默认 nickname="微信昵称", avatar="http://x/a.png"
+
+    r = client.post(
+        "/api/v1/auth/wechat/conflict/continue",
+        json={"conflict_ticket": body["conflict_ticket"], "device_id": "devS10"},
+    )
+    assert r.status_code == 200, r.text
+    user_out = r.json()["token"]["user"]
+    assert user_out["nickname"] == "微信昵称"
+    assert user_out["avatar_url"] == "http://x/a.png"
+
+
+def test_rebind_blocked_within_30_days(client, monkeypatch) -> None:
+    """同一手机号 30 天内二次换绑 → 409;占用响应 rebind_available=False。"""
+    phone = "13900139302"
+    _sms_occupy(client, phone)
+    body = _occupy_via_conflict(client, monkeypatch, "openid_rb_302a", phone, "devR2")
+    assert client.post(
+        "/api/v1/auth/wechat/conflict/rebind",
+        json={"conflict_ticket": body["conflict_ticket"], "device_id": "devR2"},
+    ).status_code == 200
+
+    # 第二次:新 openid 撞同号 → 占用响应此时 rebind_available=False
+    body2 = _occupy_via_conflict(client, monkeypatch, "openid_rb_302b", phone, "devR2b")
+    assert body2["rebind_available"] is False
+    assert body2["rebind_blocked_days"] >= 1
+    r = client.post(
+        "/api/v1/auth/wechat/conflict/rebind",
+        json={"conflict_ticket": body2["conflict_ticket"], "device_id": "devR2b"},
+    )
+    assert r.status_code == 409, r.text
+
+
+def test_rebind_expired_ticket_returns_401(client, monkeypatch) -> None:
+    monkeypatch.setattr(security.settings, "WECHAT_BIND_TICKET_EXPIRE_MINUTES", -1)
+    expired = security.create_conflict_ticket(
+        openid="oid", wechat_nickname=None, wechat_avatar_url=None, phone="13900139309"
+    )
+    r = client.post(
+        "/api/v1/auth/wechat/conflict/rebind",
+        json={"conflict_ticket": expired, "device_id": "devR3"},
+    )
+    assert r.status_code == 401, r.text

tests/test_wechat_login.py

@@ -0,0 +1,198 @@
+"""微信登录 M1 测试:bind_ticket 令牌、wechat-login(openid 命中/未命中)、
+bind-phone(建号/占用/令牌过期)。
+
+沿用 tests/test_auth.py 风格:HTTP 走 client fixture;微信 code→openid 用 monkeypatch
+拦掉(conftest 里 WECHAT_APP_ID/SECRET 是 dummy,不真连微信);短信走 SMS_MOCK(任意 6 位通过)。
+"""
+from __future__ import annotations
+
+import pytest
+
+from app.api.v1 import auth
+from app.core import security
+from app.integrations import wxpay
+
+
+def _fake_userinfo(openid: str, nickname: str | None = "微信昵称", avatar: str | None = "http://x/a.png"):
+    """返回一个可传给 monkeypatch 的假 code_to_userinfo(忽略 code,固定返回给定 openid)。"""
+    def _f(code: str) -> dict:
+        return {"openid": openid, "nickname": nickname, "avatar_url": avatar, "raw": {}}
+    return _f
+
+
+# ===== Task 1: bind_ticket 令牌 =====
+
+def test_bind_ticket_roundtrip() -> None:
+    token = security.create_bind_ticket(openid="oid1", wechat_nickname="昵", wechat_avatar_url="http://a")
+    claims = security.decode_bind_ticket(token)
+    assert claims["openid"] == "oid1"
+    assert claims["wnk"] == "昵"
+    assert claims["wav"] == "http://a"
+
+
+def test_bind_ticket_wrong_type_rejected() -> None:
+    # 用 access token 冒充 bind_ticket → TokenError(typ 不匹配)
+    access, _ = security.create_token(user_id=1, token_type="access")
+    with pytest.raises(security.TokenError):
+        security.decode_bind_ticket(access)
+
+
+def test_bind_ticket_expired_rejected(monkeypatch) -> None:
+    monkeypatch.setattr(security.settings, "WECHAT_BIND_TICKET_EXPIRE_MINUTES", -1)
+    token = security.create_bind_ticket(openid="oid", wechat_nickname=None, wechat_avatar_url=None)
+    with pytest.raises(security.TokenError):
+        security.decode_bind_ticket(token)
+
+
+# ===== Task 2: wechat-login =====
+
+def test_wechat_login_new_openid_returns_bind_ticket(client, monkeypatch) -> None:
+    monkeypatch.setattr(wxpay, "code_to_userinfo", _fake_userinfo("openid_new_1", "小明", "http://x/m.png"))
+    r = client.post("/api/v1/auth/wechat-login", json={"code": "wxcode1", "device_id": "devA"})
+    assert r.status_code == 200, r.text
+    body = r.json()
+    assert body["status"] == "need_bind_phone"
+    assert body["bind_ticket"]
+    assert body["wechat_nickname"] == "小明"
+    assert body["wechat_avatar_url"] == "http://x/m.png"
+    assert body["token"] is None
+
+
+def test_wechat_login_invalid_code_returns_400(client, monkeypatch) -> None:
+    def _raise(code: str) -> dict:
+        raise ValueError("微信授权失败: invalid code")
+    monkeypatch.setattr(wxpay, "code_to_userinfo", _raise)
+    r = client.post("/api/v1/auth/wechat-login", json={"code": "bad", "device_id": "devA"})
+    assert r.status_code == 400, r.text
+
+
+# ===== Task 3: bind-phone/sms =====
+
+def test_wechat_bind_sms_creates_account_then_openid_logs_in(client, monkeypatch) -> None:
+    """未占用 → 建微信账号(channel=wechat,昵称头像取微信);再次同 openid 登录 → 直接登入同一账号。"""
+    monkeypatch.setattr(wxpay, "code_to_userinfo", _fake_userinfo("openid_flow_2", "阿花", "http://x/h.png"))
+    phone = "13900139002"
+
+    # 1) 微信登录 → 未命中 → 拿 ticket
+    r = client.post("/api/v1/auth/wechat-login", json={"code": "c1", "device_id": "devB"})
+    ticket = r.json()["bind_ticket"]
+    assert ticket
+
+    # 2) 短信绑号(SMS_MOCK:任意 6 位通过)→ 建号 + 登入
+    r = client.post(
+        "/api/v1/auth/wechat/bind-phone/sms",
+        json={"bind_ticket": ticket, "phone": phone, "code": "123456", "device_id": "devB"},
+    )
+    assert r.status_code == 200, r.text
+    body = r.json()
+    assert body["status"] == "logged_in"
+    user = body["token"]["user"]
+    assert user["phone"] == phone
+    assert user["register_channel"] == "wechat"
+    assert user["nickname"] == "阿花"
+    assert user["avatar_url"] == "http://x/h.png"
+    uid = user["id"]
+
+    # 3) 再次微信登录(同 openid)→ 命中 → 直接登入同一账号
+    r = client.post("/api/v1/auth/wechat-login", json={"code": "c2", "device_id": "devB"})
+    assert r.status_code == 200, r.text
+    body = r.json()
+    assert body["status"] == "logged_in"
+    assert body["token"]["user"]["id"] == uid
+
+
+def test_wechat_bind_sms_phone_occupied(client, monkeypatch) -> None:
+    """手机号已被其他账号占用 → 返回 phone_occupied + 原账号信息(不建号)。"""
+    phone = "13900139003"
+    # 先用普通短信登录占用该手机号(register_channel=sms)
+    assert client.post("/api/v1/auth/sms/send", json={"phone": phone}).status_code == 200
+    r = client.post("/api/v1/auth/sms/login", json={"phone": phone, "code": "123456"})
+    assert r.status_code == 200, r.text
+    occupied_nickname = r.json()["user"]["nickname"]
+
+    # 微信登录(新 openid)→ 未命中 → ticket
+    monkeypatch.setattr(wxpay, "code_to_userinfo", _fake_userinfo("openid_occ_3"))
+    ticket = client.post(
+        "/api/v1/auth/wechat-login", json={"code": "c", "device_id": "devC"}
+    ).json()["bind_ticket"]
+
+    # 绑同一手机号 → 占用
+    r = client.post(
+        "/api/v1/auth/wechat/bind-phone/sms",
+        json={"bind_ticket": ticket, "phone": phone, "code": "123456", "device_id": "devC"},
+    )
+    assert r.status_code == 200, r.text
+    body = r.json()
+    assert body["status"] == "phone_occupied"
+    assert body["token"] is None
+    assert body["occupied_account"]["nickname"] == occupied_nickname
+    assert body["occupied_account"]["avatar_url"] is None  # 短信注册账号无头像 → 序列化为 null
+    assert body["occupied_account"]["created_at"]
+
+
+def test_wechat_bind_sms_expired_ticket_returns_401(client, monkeypatch) -> None:
+    """过期 bind_ticket → 401。"""
+    monkeypatch.setattr(security.settings, "WECHAT_BIND_TICKET_EXPIRE_MINUTES", -1)
+    expired = security.create_bind_ticket(openid="openid_exp", wechat_nickname="x", wechat_avatar_url=None)
+    r = client.post(
+        "/api/v1/auth/wechat/bind-phone/sms",
+        json={"bind_ticket": expired, "phone": "13900139009", "code": "123456", "device_id": "devD"},
+    )
+    assert r.status_code == 401, r.text
+
+
+# ===== Task 4: bind-phone/jverify =====
+
+def test_wechat_bind_jverify_creates_account(client, monkeypatch) -> None:
+    """本机号(极光)绑定路径:verify_and_get_phone 拦掉,未占用 → 建号登入。"""
+    monkeypatch.setattr(wxpay, "code_to_userinfo", _fake_userinfo("openid_jv_5", "极光用户", None))
+    phone = "13900139005"
+    # 极光 loginToken→手机号 在 auth 模块命名空间打桩(auth.py 顶部 from ...jiguang import verify_and_get_phone)
+    monkeypatch.setattr(auth, "verify_and_get_phone", lambda token: phone)
+
+    ticket = client.post(
+        "/api/v1/auth/wechat-login", json={"code": "c", "device_id": "devE"}
+    ).json()["bind_ticket"]
+
+    r = client.post(
+        "/api/v1/auth/wechat/bind-phone/jverify",
+        json={"bind_ticket": ticket, "login_token": "jgtoken", "device_id": "devE"},
+    )
+    assert r.status_code == 200, r.text
+    body = r.json()
+    assert body["status"] == "logged_in"
+    user = body["token"]["user"]
+    assert user["phone"] == phone
+    assert user["register_channel"] == "wechat"
+    assert user["nickname"] == "极光用户"
+    # 微信 userinfo 隐私脱敏 avatar=None → 头像为空(客户端兜底默认头像)
+    assert user["avatar_url"] is None
+
+
+def test_wechat_bind_jverify_expired_ticket_returns_401(client, monkeypatch) -> None:
+    """过期 bind_ticket → 401(极光绑号路径,decode 先于极光核验)。"""
+    monkeypatch.setattr(security.settings, "WECHAT_BIND_TICKET_EXPIRE_MINUTES", -1)
+    expired = security.create_bind_ticket(openid="openid_jv_exp", wechat_nickname="x", wechat_avatar_url=None)
+    r = client.post(
+        "/api/v1/auth/wechat/bind-phone/jverify",
+        json={"bind_ticket": expired, "login_token": "jgtoken", "device_id": "devE"},
+    )
+    assert r.status_code == 401, r.text
+
+
+def test_wechat_bind_jverify_jiguang_error_returns_502(client, monkeypatch) -> None:
+    """极光核验失败(JiguangError)→ 502。"""
+    monkeypatch.setattr(wxpay, "code_to_userinfo", _fake_userinfo("openid_jv_err"))
+
+    def _raise(token: str) -> str:
+        raise auth.JiguangError("mock jg failure")
+
+    monkeypatch.setattr(auth, "verify_and_get_phone", _raise)
+    ticket = client.post(
+        "/api/v1/auth/wechat-login", json={"code": "c", "device_id": "devE"}
+    ).json()["bind_ticket"]
+    r = client.post(
+        "/api/v1/auth/wechat/bind-phone/jverify",
+        json={"bind_ticket": ticket, "login_token": "badtoken", "device_id": "devE"},
+    )
+    assert r.status_code == 502, r.text

tests/test_withdraw.py

@@ -312,6 +312,94 @@ def test_bind_rejects_openid_already_bound(client, monkeypatch) -> None:
     assert r.status_code == 409, r.text
 
 
+# ===== §10 绑微信时展示身份回填规则 =====
+
+def test_bind_replaces_default_nickname_and_null_avatar(client, monkeypatch) -> None:
+    """§10-A: 全默认(昵称=系统默认,头像=null) → 绑微信后两个展示字段都替换为微信值。"""
+    monkeypatch.setattr(
+        "app.integrations.wxpay.code_to_userinfo",
+        lambda code: {"openid": "openid_s10_a", "nickname": "微信昵称A", "avatar_url": "https://x/a.png", "raw": {}},
+    )
+    token = _login(client, "13800003001")
+    r = client.post("/api/v1/wallet/bind-wechat", json={"code": "c"}, headers=_auth(token))
+    assert r.status_code == 200, r.text
+
+    r = client.get("/api/v1/auth/me", headers=_auth(token))
+    assert r.status_code == 200, r.text
+    body = r.json()
+    assert body["nickname"] == "微信昵称A"
+    assert body["avatar_url"] == "https://x/a.png"
+
+
+def test_bind_keeps_customized_nickname(client, monkeypatch) -> None:
+    """§10-B: 用户已改过昵称 → 绑微信后昵称保留,但 null 头像仍替换为微信头像。"""
+    monkeypatch.setattr(
+        "app.integrations.wxpay.code_to_userinfo",
+        lambda code: {"openid": "openid_s10_b", "nickname": "微信昵称B", "avatar_url": "https://x/b.png", "raw": {}},
+    )
+    token = _login(client, "13800003002")
+    # 先把昵称改成非默认值
+    r = client.patch(
+        "/api/v1/user/profile", json={"nickname": "我的名字"}, headers=_auth(token)
+    )
+    assert r.status_code == 200, r.text
+
+    r = client.post("/api/v1/wallet/bind-wechat", json={"code": "c"}, headers=_auth(token))
+    assert r.status_code == 200, r.text
+
+    r = client.get("/api/v1/auth/me", headers=_auth(token))
+    body = r.json()
+    assert body["nickname"] == "我的名字"       # 保留自定义昵称
+    assert body["avatar_url"] == "https://x/b.png"  # null 头像被微信头像替换
+
+
+def test_bind_keeps_customized_avatar(client, monkeypatch) -> None:
+    """§10-C: 已有自定义头像 → 绑微信后头像保留,但默认昵称替换为微信昵称。"""
+    monkeypatch.setattr(
+        "app.integrations.wxpay.code_to_userinfo",
+        lambda code: {"openid": "openid_s10_c", "nickname": "微信昵称C", "avatar_url": "https://x/c.png", "raw": {}},
+    )
+    token = _login(client, "13800003003")
+    phone = "13800003003"
+    # 直接用 DB 给用户写入自定义头像(保持默认昵称)
+    db = SessionLocal()
+    try:
+        user = db.execute(select(User).where(User.phone == phone)).scalar_one()
+        user.avatar_url = "https://custom/av.png"
+        db.commit()
+    finally:
+        db.close()
+
+    r = client.post("/api/v1/wallet/bind-wechat", json={"code": "c"}, headers=_auth(token))
+    assert r.status_code == 200, r.text
+
+    r = client.get("/api/v1/auth/me", headers=_auth(token))
+    body = r.json()
+    assert body["nickname"] == "微信昵称C"           # 默认昵称被替换
+    assert body["avatar_url"] == "https://custom/av.png"  # 自定义头像保留
+
+
+def test_bind_wechat_empty_keeps_default(client, monkeypatch) -> None:
+    """§10-D: 微信侧 nickname/avatar 均为 None → 不覆盖,展示字段维持原默认值。"""
+    monkeypatch.setattr(
+        "app.integrations.wxpay.code_to_userinfo",
+        lambda code: {"openid": "openid_s10_d", "nickname": None, "avatar_url": None, "raw": {}},
+    )
+    token = _login(client, "13800003004")
+
+    r = client.get("/api/v1/auth/me", headers=_auth(token))
+    original_nickname = r.json()["nickname"]  # 系统分配的默认昵称
+    assert original_nickname.startswith("用户")
+
+    r = client.post("/api/v1/wallet/bind-wechat", json={"code": "c"}, headers=_auth(token))
+    assert r.status_code == 200, r.text
+
+    r = client.get("/api/v1/auth/me", headers=_auth(token))
+    body = r.json()
+    assert body["nickname"] == original_nickname  # 默认昵称不变
+    assert body["avatar_url"] is None             # 头像仍为 null
+
+
 def test_withdraw_reject_refunds(client, monkeypatch) -> None:
     """管理员审核拒绝 → 退回现金 + 单 rejected + 理由写入 fail_reason(用户可见)。"""
     monkeypatch.setattr("app.integrations.wxpay.code_to_userinfo", lambda code: {"openid": "openid_reject", "nickname": None, "avatar_url": None, "raw": {}})