feat(wx-finance): 会话存档轮询间隔 3s→0.5s(支持亚秒, int→float)

mentor 要求把会话存档轮询从 3s 提到 0.5s。WX_FINANCE_POLL_INTERVAL_SEC 由 int 改 float
(默认 0.5), poller 的可打断 sleep 从 range(int) 改为按 ≤0.5s 分片的 while 循环(原 range()
不吃 float、无法支持亚秒间隔), 启动日志 %d→%s。

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

app/api/internal/wx_finance.py

@@ -0,0 +1,58 @@
+"""会话存档独立 poller → app-server 的内部信号端点(server→server, 非客户端接口)。
+
+会话存档轮询在【独立进程】跑(WeWorkFinanceSdk 是 Go c-shared 库, 嵌进 app-server 会 segfault
+把主进程带崩, 见 scripts/wx_finance_poller.py)。poller 拉到美团卡片/截图后 POST 到这里, 由
+app-server 打比价信号 —— set_pending 在 app-server 进程内存, 心跳才 pop 得到, 故必须回到本进程。
+靠共享密钥头 X-Internal-Secret(== settings.INTERNAL_API_SECRET)校验;未配置 → 503。
+"""
+from __future__ import annotations
+
+import hmac
+import logging
+from typing import Annotated
+
+from fastapi import APIRouter, Header, HTTPException, status
+
+from app.core import wx_poc_signal
+from app.core.config import settings
+from app.schemas.wx_finance import WxFinancePendingIn, WxFinancePendingOut
+
+logger = logging.getLogger("shagua.internal.wx_finance")
+
+router = APIRouter(prefix="/internal", tags=["internal"])
+
+
+def _check_secret(x_internal_secret: str | None) -> None:
+    """共享密钥校验。未配置 → 503(挡裸奔);不匹配 → 401(常量时间比较)。"""
+    configured = settings.INTERNAL_API_SECRET
+    if not configured:
+        raise HTTPException(
+            status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
+            detail="internal api not configured",
+        )
+    if not x_internal_secret or not hmac.compare_digest(x_internal_secret, configured):
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED, detail="invalid internal secret"
+        )
+
+
+@router.post(
+    "/wx-finance/pending",
+    response_model=WxFinancePendingOut,
+    summary="会话存档 poller 触发比价信号(独立进程→app-server, 打 set_pending)",
+)
+def wx_finance_pending(
+    payload: WxFinancePendingIn,
+    x_internal_secret: Annotated[str | None, Header()] = None,
+) -> WxFinancePendingOut:
+    _check_secret(x_internal_secret)
+    device_id = settings.WX_POC_TEST_DEVICE_ID
+    if not device_id:
+        logger.warning("wx_finance pending: WX_POC_TEST_DEVICE_ID 未配置, 忽略信号")
+        return WxFinancePendingOut(ok=False)
+    wx_poc_signal.set_pending(device_id, payload.source)
+    logger.info(
+        "wx_finance PoC: 已给测试设备 %s 打比价信号 source=%s (触发=%s)",
+        device_id, payload.source, payload.kind,
+    )
+    return WxFinancePendingOut(ok=True)

app/api/v1/device.py

@@ -14,18 +14,24 @@ 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"])
 
 
@@ -52,12 +58,12 @@ def register_device(
     return DeviceOut.model_validate(device)
 
 
-@router.post("/heartbeat", response_model=OkResponse, summary="上报心跳")
+@router.post("/heartbeat", response_model=HeartbeatResponse, summary="上报心跳")
 def report_heartbeat(
     req: HeartbeatRequest,
     user: CurrentUser,
     db: DbSession,
-) -> OkResponse:
+) -> HeartbeatResponse:
     device_repo.touch_heartbeat(
         db,
         user_id=user.id,
@@ -65,7 +71,16 @@ def report_heartbeat(
         accessibility_enabled=req.accessibility_enabled,
         registration_id=req.registration_id,
     )
-    return OkResponse()
+    # 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)
 
 
 @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

@@ -0,0 +1,159 @@
+"""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

@@ -0,0 +1,112 @@
+"""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

@@ -136,6 +136,40 @@ 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)
+
+    # ===== 微信会话内容存档(企业微信;"发给成员"那条路的截图/美团卡片比价上游入口) =====
+    # 用户把美团小程序卡片/截图发给企业微信【成员】(非客服) → 会话存档 GetChatData 轮询拉取 →
+    # RSA+AES 解密 → 识别 weapp/image → 给测试设备打比价信号。下游(心跳→弹窗→比价)复用。
+    # 需后台开通「会话内容存档」+ 上传 RSA 公钥 + 配可信IP + 拿存档 Secret;.so 放服务器。
+    # corpid 复用上面的 WX_KF_CORP_ID(同一企业)。ENABLED 默认关 → 未配好前零影响。
+    WX_FINANCE_ENABLED: bool = False           # 总开关(worker 是否启动)
+    WX_FINANCE_SECRET: str = ""                # 会话存档【专用】Secret(≠微信客服/自建应用)
+    WX_FINANCE_SDK_PATH: str = "./libWeWorkFinanceSdk_C.so"                 # WeWorkFinanceSdk C 库(Linux .so)
+    WX_FINANCE_PRIVATE_KEY_PATH: str = "./secrets/wx_finance_private.pem"   # RSA 私钥(解 encrypt_random_key)
+    WX_FINANCE_POLL_INTERVAL_SEC: float = 0.5  # GetChatData 轮询间隔秒(无回调、自己定频;支持亚秒如 0.5)
+    WX_FINANCE_SEQ_FILE: str = "./data/wx_finance_seq.txt"                  # seq 游标持久化(防丢/重复)
+    WX_FINANCE_RECEIVER_USERID: str = ""       # 接收成员 userid(万朗杰);只处理【非他发】的消息, 空=不过滤
+    WX_FINANCE_INTERNAL_URL: str = "http://127.0.0.1:8770"   # poller 通知 app-server 打信号的内部地址(同机)
+
     @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)。"""
@@ -146,6 +180,26 @@ 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
+        )
+
+    @property
+    def wx_finance_configured(self) -> bool:
+        """会话存档 worker 是否该启动 = 总开关开 且 corpid + 存档 Secret 齐全。"""
+        return bool(self.WX_FINANCE_ENABLED and self.WX_KF_CORP_ID and self.WX_FINANCE_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/wx_poc_signal.py

@@ -0,0 +1,27 @@
+"""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/wx_finance_sdk.py

@@ -0,0 +1,100 @@
+"""微信会话内容存档 SDK 封装(WeWorkFinanceSdk C 库的 ctypes 绑定 + 消息解密)。
+
+企业微信「会话内容存档」是拿"成员↔外部用户私聊消息正文"(含美团小程序卡片)的官方途径:
+主动轮询 GetChatData(seq) 拉取。每条消息两段密文:
+  - encrypt_random_key:用【企业自持 RSA 私钥】解出 AES 密钥
+  - encrypt_chat_msg :SDK DecryptData 用该密钥解出明文消息 JSON
+本模块封装:加载 .so → Init → GetChatData → RSA 解密随机密钥 → DecryptData。纯外部依赖,
+不含业务逻辑(识别 weapp/image → 打信号在 core/wx_finance_worker.py)。
+
+.so 需放服务器(Linux `libWeWorkFinanceSdk_C.so`),路径 settings.WX_FINANCE_SDK_PATH。
+⚠️ CDLL 在实例化时才加载(非 import 期),故本模块在无 .so 的机器上也能安全 import。
+"""
+from __future__ import annotations
+
+import base64
+import ctypes
+import json
+import logging
+from typing import Any
+
+from cryptography.hazmat.primitives.asymmetric import padding
+from cryptography.hazmat.primitives.serialization import load_pem_private_key
+
+logger = logging.getLogger("shagua.wx_finance")
+
+
+class WxFinanceError(RuntimeError):
+    """SDK 调用返回非 0 / 业务 errcode 时抛。"""
+
+
+class WxFinanceSdk:
+    """WeWorkFinanceSdk 薄封装。实例化即加载 .so + Init(需 corpid/secret 正确 + 服务器 IP 在可信IP)。"""
+
+    def __init__(self, sdk_path: str, corpid: str, secret: str, private_key_pem: bytes) -> None:
+        self._priv = load_pem_private_key(private_key_pem, password=None)
+        self._lib = ctypes.CDLL(sdk_path)  # 缺 .so / 缺 libssl 依赖会在此抛 OSError
+        self._bind()
+        self._sdk = self._lib.NewSdk()
+        ret = self._lib.Init(self._sdk, corpid.encode(), secret.encode())
+        if ret != 0:
+            raise WxFinanceError(f"Init 失败 ret={ret}(检查 corpid / 会话存档 Secret / 可信IP)")
+
+    def _bind(self) -> None:
+        lib = self._lib
+        lib.NewSdk.restype = ctypes.c_void_p
+        lib.Init.argtypes = [ctypes.c_void_p, ctypes.c_char_p, ctypes.c_char_p]
+        lib.Init.restype = ctypes.c_int
+        lib.GetChatData.argtypes = [
+            ctypes.c_void_p, ctypes.c_ulonglong, ctypes.c_uint,
+            ctypes.c_char_p, ctypes.c_char_p, ctypes.c_int, ctypes.c_void_p,
+        ]
+        lib.GetChatData.restype = ctypes.c_int
+        # ⚠️ DecryptData 不吃 sdk 句柄(与 GetChatData 不同, 它是纯解密函数)——只有 3 个参数,
+        # 多传 sdk 会让参数错位、encrypt_key 收到 sdk 指针 → DecryptData 返 10008(解析 encrypt_key 出错)。
+        lib.DecryptData.argtypes = [ctypes.c_char_p, ctypes.c_char_p, ctypes.c_void_p]
+        lib.DecryptData.restype = ctypes.c_int
+        lib.NewSlice.restype = ctypes.c_void_p
+        lib.FreeSlice.argtypes = [ctypes.c_void_p]
+        lib.GetContentFromSlice.argtypes = [ctypes.c_void_p]
+        lib.GetContentFromSlice.restype = ctypes.c_void_p
+        lib.GetSliceLen.argtypes = [ctypes.c_void_p]
+        lib.GetSliceLen.restype = ctypes.c_int
+        lib.DestroySdk.argtypes = [ctypes.c_void_p]
+
+    def _slice_bytes(self, slc: int) -> bytes:
+        ptr = self._lib.GetContentFromSlice(slc)
+        length = self._lib.GetSliceLen(slc)
+        return ctypes.string_at(ptr, length)
+
+    def get_chat_data(self, seq: int, limit: int = 1000, timeout: int = 10) -> list[dict[str, Any]]:
+        """拉 seq 之后的消息(返回从 seq+1 起)。返回 chatdata 列表(每项含 seq/encrypt_random_key/encrypt_chat_msg)。"""
+        slc = self._lib.NewSlice()
+        try:
+            ret = self._lib.GetChatData(self._sdk, int(seq), int(limit), None, None, int(timeout), slc)
+            if ret != 0:
+                raise WxFinanceError(f"GetChatData 失败 ret={ret}")
+            data = json.loads(self._slice_bytes(slc).decode("utf-8"))
+        finally:
+            self._lib.FreeSlice(slc)
+        if data.get("errcode"):
+            raise WxFinanceError(f"GetChatData errcode={data.get('errcode')} {data.get('errmsg')}")
+        return data.get("chatdata", [])
+
+    def decrypt(self, encrypt_random_key_b64: str, encrypt_chat_msg: str) -> dict[str, Any]:
+        """RSA 私钥解 encrypt_random_key → 得 AES 密钥 → DecryptData 解 encrypt_chat_msg → 明文 dict。"""
+        # 企业微信用你上传的 RSA 公钥(PKCS1)加密随机密钥, 这里用对应私钥解出, 原样交给 DecryptData。
+        aes_key = self._priv.decrypt(base64.b64decode(encrypt_random_key_b64), padding.PKCS1v15())
+        slc = self._lib.NewSlice()
+        try:
+            ret = self._lib.DecryptData(aes_key, encrypt_chat_msg.encode(), slc)
+            if ret != 0:
+                raise WxFinanceError(f"DecryptData 失败 ret={ret}")
+            return json.loads(self._slice_bytes(slc).decode("utf-8"))
+        finally:
+            self._lib.FreeSlice(slc)
+
+    def close(self) -> None:
+        if getattr(self, "_sdk", None):
+            self._lib.DestroySdk(self._sdk)
+            self._sdk = None

app/integrations/wx_kf_client.py

@@ -0,0 +1,126 @@
+"""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

@@ -0,0 +1,69 @@
+"""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

@@ -19,6 +19,7 @@ from app.api.internal.app_version import router as internal_app_version_router
 from app.api.internal.launch_confirm import router as internal_launch_confirm_router
 from app.api.internal.price import router as internal_price_router
 from app.api.internal.store import router as internal_store_router
+from app.api.internal.wx_finance import router as internal_wx_finance_router
 from app.api.v1.ad import router as ad_router
 from app.api.v1.analytics import router as analytics_router
 from app.api.v1.auth import router as auth_router
@@ -39,6 +40,8 @@ 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 (
@@ -137,9 +140,15 @@ app.include_router(internal_price_router)
 app.include_router(internal_store_router)
 app.include_router(internal_app_version_router)
 app.include_router(internal_launch_confirm_router)
+# 会话存档独立 poller → 打比价信号(server→server, X-Internal-Secret;轮询进程在 app 外, 见 scripts/wx_finance_poller.py)
+app.include_router(internal_wx_finance_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/schemas/device.py

@@ -36,6 +36,20 @@ 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)。"""

app/schemas/wx_finance.py

@@ -0,0 +1,13 @@
+"""会话存档独立 poller → app-server 内部信号端点的 schema。"""
+from __future__ import annotations
+
+from pydantic import BaseModel
+
+
+class WxFinancePendingIn(BaseModel):
+    source: str = "meituan"   # 源平台代号(pop 后前端 launch 用;PoC 写死 meituan)
+    kind: str = ""            # 触发物类型 weapp / image(仅日志用)
+
+
+class WxFinancePendingOut(BaseModel):
+    ok: bool = True

deploy/wx-finance-poller.service

@@ -0,0 +1,18 @@
+[Unit]
+# 会话存档轮询 poller —— 独立进程跑 WeWorkFinanceSdk(Go c-shared .so),与 app-server 隔离:
+# 嵌进 app-server 会 segfault 把主进程带崩,拆出来后崩了 systemd 只重启本服务、不影响 app-server。
+Description=Shaguabijia 会话存档轮询 poller (WeWorkFinanceSdk, isolated from app-server)
+After=network.target shaguabijia-app-server.service
+
+[Service]
+Type=simple
+User=root
+WorkingDirectory=/opt/shaguabijia-app-server
+Environment="PATH=/opt/shaguabijia-app-server/.venv/bin:/usr/bin:/bin"
+EnvironmentFile=/opt/shaguabijia-app-server/.env
+ExecStart=/opt/shaguabijia-app-server/.venv/bin/python scripts/wx_finance_poller.py
+Restart=on-failure
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target

scripts/wx_finance_poller.py

@@ -0,0 +1,130 @@
+"""会话存档【独立进程】轮询 poller —— 单独 systemd 服务跑, 与 app-server 隔离。
+
+为什么独立进程:WeWorkFinanceSdk 是 Go 编译的 c-shared 库, 自带 Go runtime。嵌进 app-server(uvicorn)
+后台线程里跑会 segfault、把主进程带崩(2026-07-17 实测 core-dump 每 5s 循环)。独立进程让 Go runtime
+独占进程 + 主线程, 崩了 systemd 只重启本 poller、不动 app-server。拉到美团卡片(weapp)/截图(image)
+→ POST app-server 内部端点 /internal/wx-finance/pending 打比价信号(下游心跳→弹窗→比价 完全复用)。
+
+  手动跑:  cd /opt/shaguabijia-app-server && .venv/bin/python scripts/wx_finance_poller.py
+  生产:    deploy/wx-finance-poller.service 常驻(systemctl enable --now wx-finance-poller)
+"""
+from __future__ import annotations
+
+import logging
+import signal
+import time
+from pathlib import Path
+
+import httpx
+
+from app.core.config import settings
+from app.core.logging import setup_logging
+from app.integrations.wx_finance_sdk import WxFinanceError, WxFinanceSdk
+
+logger = logging.getLogger("shagua.wx_finance_poller")
+
+_stop = False
+
+
+def _on_signal(_signum: int, _frame: object) -> None:
+    global _stop
+    _stop = True
+
+
+def _load_seq() -> int:
+    try:
+        return int(Path(settings.WX_FINANCE_SEQ_FILE).read_text().strip() or "0")
+    except Exception:
+        return 0
+
+
+def _save_seq(seq: int) -> None:
+    try:
+        p = Path(settings.WX_FINANCE_SEQ_FILE)
+        p.parent.mkdir(parents=True, exist_ok=True)
+        p.write_text(str(seq))
+    except Exception:
+        logger.exception("seq 持久化失败")
+
+
+def _notify(client: httpx.Client, source: str, kind: str) -> None:
+    """POST 内部端点让 app-server 打信号(set_pending 在 app-server 进程内存)。"""
+    url = f"{settings.WX_FINANCE_INTERNAL_URL.rstrip('/')}/internal/wx-finance/pending"
+    try:
+        resp = client.post(
+            url,
+            json={"source": source, "kind": kind},
+            headers={"X-Internal-Secret": settings.INTERNAL_API_SECRET},
+            timeout=10,
+        )
+        logger.info("notify app-server (%s) → %s", kind, resp.status_code)
+    except Exception:
+        logger.exception("notify app-server 失败")
+
+
+def _handle(client: httpx.Client, msg: dict) -> None:
+    """明文消息:外部用户(from≠接收成员)发来的 weapp/image → 通知 app-server 打信号。"""
+    msgtype = msg.get("msgtype") or ""
+    frm = msg.get("from") or ""
+    receiver = settings.WX_FINANCE_RECEIVER_USERID
+    if receiver and frm == receiver:
+        return  # 成员自己发的, 跳过
+    if msgtype not in ("weapp", "image"):
+        return
+    logger.info("命中触发 from=%s type=%s", frm, msgtype)
+    _notify(client, "meituan", msgtype)
+
+
+def main() -> None:
+    setup_logging(debug=settings.APP_DEBUG)
+    if not settings.wx_finance_configured:
+        logger.warning("WX_FINANCE 未配齐(ENABLED/corpid/存档Secret), poller 退出")
+        return
+    if not settings.INTERNAL_API_SECRET:
+        logger.error("INTERNAL_API_SECRET 未配置, poller 无法通知 app-server, 退出")
+        return
+    signal.signal(signal.SIGTERM, _on_signal)
+    signal.signal(signal.SIGINT, _on_signal)
+
+    sdk = WxFinanceSdk(
+        settings.WX_FINANCE_SDK_PATH,
+        settings.WX_KF_CORP_ID,
+        settings.WX_FINANCE_SECRET,
+        Path(settings.WX_FINANCE_PRIVATE_KEY_PATH).read_bytes(),
+    )
+    seq = _load_seq()
+    logger.info(
+        "wx_finance poller 启动, 从 seq=%d 轮询, 间隔 %ss", seq, settings.WX_FINANCE_POLL_INTERVAL_SEC
+    )
+    with httpx.Client() as client:
+        while not _stop:
+            try:
+                msgs = sdk.get_chat_data(seq, limit=1000)
+                if msgs:
+                    logger.info("拉到 %d 条(seq>%d)", len(msgs), seq)
+                for item in msgs:
+                    try:
+                        plain = sdk.decrypt(item["encrypt_random_key"], item["encrypt_chat_msg"])
+                        _handle(client, plain)
+                    except Exception:
+                        logger.exception("解密/处理单条失败 seq=%s", item.get("seq"))
+                    seq = max(seq, int(item.get("seq", seq)))
+                if msgs:
+                    _save_seq(seq)
+            except WxFinanceError:
+                logger.exception("GetChatData 出错")
+            except Exception:
+                logger.exception("轮询异常")
+            # 可打断的 sleep:按 ≤0.5s 分片, 支持亚秒间隔(如 0.5s), 收到 SIGTERM 尽快退
+            interval = max(0.1, settings.WX_FINANCE_POLL_INTERVAL_SEC)
+            step = min(0.5, interval)
+            slept = 0.0
+            while slept < interval and not _stop:
+                time.sleep(step)
+                slept += step
+    sdk.close()
+    logger.info("wx_finance poller 已停止")
+
+
+if __name__ == "__main__":
+    main()

scripts/wx_finance_probe.py

@@ -0,0 +1,45 @@
+"""会话存档 SDK 连通性探针 —— 上 worker 前,在【云服务器】单独验证整条链路是否打通。
+
+  在 /opt/shaguabijia-app-server 下跑:  .venv/bin/python scripts/wx_finance_probe.py
+
+依次验证:加载 .so → NewSdk/Init(corpid+存档Secret+可信IP)→ GetChatData(0)→ 试解第一条。
+只读、不写任何比价信号。任一步报错都会明确指出卡在哪(便于逐项排:.so 缺依赖 / Init 失败 /
+可信IP 没放行 / 私钥不匹配)。全绿了再把 WX_FINANCE_ENABLED 置 true 上 worker。
+"""
+from __future__ import annotations
+
+from pathlib import Path
+
+from app.core.config import settings
+from app.integrations.wx_finance_sdk import WxFinanceSdk
+
+
+def main() -> None:
+    print(f"[cfg] sdk_path   = {settings.WX_FINANCE_SDK_PATH}")
+    print(f"[cfg] corpid     = {settings.WX_KF_CORP_ID}")
+    print(f"[cfg] secret_set = {bool(settings.WX_FINANCE_SECRET)}")
+    print(f"[cfg] privkey    = {settings.WX_FINANCE_PRIVATE_KEY_PATH}")
+
+    sdk = WxFinanceSdk(
+        settings.WX_FINANCE_SDK_PATH,
+        settings.WX_KF_CORP_ID,
+        settings.WX_FINANCE_SECRET,
+        Path(settings.WX_FINANCE_PRIVATE_KEY_PATH).read_bytes(),
+    )
+    print("[1] 加载 .so + Init 成功")
+
+    msgs = sdk.get_chat_data(0, limit=100)
+    print(f"[2] GetChatData(0) 成功, 拉到 {len(msgs)} 条")
+    if msgs:
+        first = msgs[0]
+        print(f"    第一条 seq={first.get('seq')} publickey_ver={first.get('publickey_ver')}")
+        plain = sdk.decrypt(first["encrypt_random_key"], first["encrypt_chat_msg"])
+        print(f"[3] 解密成功, msgtype={plain.get('msgtype')} from={plain.get('from')}")
+    else:
+        print("[3] 暂无历史消息(先让用户加接收成员好友、发条消息, 再跑一次)")
+    sdk.close()
+    print("探针完成:链路全通 ✓")
+
+
+if __name__ == "__main__":
+    main()