feat(scraper): 微信群消息抓取(368778条/750群)+浏览器守护循环+SQLite忙等

- 新 group-messages 实体:真机探明群消息=同一 msg/chats 端点 friendId 传 roomId;
  talker=发送者wxid、msgId=null→owner:room:createTime:talker 合成稳定主键(重扫幂等)
- 浏览器守护循环:超大群撑崩渲染进程时重启浏览器跳过毒群继续(实战2次自愈);
  200页上限;恢复路径补 await
- base.py SQLite connect_args timeout=60:并发写忙等而非撞锁报错
  (双抓取器并发写实测 database is locked 崩任务)
- 5个新单测,全量410绿

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

yunke-server/tests/test_scrape_group_messages.py

@@ -0,0 +1,58 @@
+"""Unit tests for the WeChat GROUP message normalizer in
+:mod:`scripts.scrape_via_page` (msg/chats with friendId=roomId, confirmed
+live 2026-08-19). Group rows differ from 1:1: talker=sender, roomid=the room,
+msgId=null -> stable synthetic pk required for idempotent re-scrapes."""
+
+from __future__ import annotations
+
+from scripts.scrape_via_page import _normalize_group_message
+
+OWNER = "wxid_wo97u1u2x11w22"
+ROOM = "56807599995@chatroom"
+
+
+def _row(**over):
+    base = {
+        "talker": "wxid_en2iklxtjxzz22",
+        "oriTalker": ROOM,
+        "name": "小**贸",
+        "content": "hello",
+        "type": 1,
+        "roomid": ROOM,
+        "createTime": 1787125769000,
+        "msgId": None,
+    }
+    base.update(over)
+    return base
+
+
+def test_group_row_maps_sender_and_room():
+    rec = _normalize_group_message(_row(), OWNER, ROOM)
+    assert rec["channel"] == "wechat"
+    assert rec["owner_account_id"] == OWNER
+    assert rec["room_id"] == ROOM
+    assert rec["talker_id"] == "wxid_en2iklxtjxzz22"  # 发送者（非会话对端）
+    assert rec["sender_name"] == "小**贸"
+    assert rec["type_raw"] == 1
+
+
+def test_synthetic_msg_id_stable_across_rescans():
+    """msgId=null 的群行两次归一化必须得到同一 msg_id（幂等 upsert 前提）。"""
+    a = _normalize_group_message(_row(), OWNER, ROOM)
+    b = _normalize_group_message(_row(), OWNER, ROOM)
+    assert a["msg_id"] == b["msg_id"]
+    assert a["msg_id"] == f"{OWNER}:{ROOM}:1787125769000:wxid_en2iklxtjxzz22"
+
+
+def test_real_msg_id_preferred_over_synthetic():
+    rec = _normalize_group_message(_row(msgId="m999"), OWNER, ROOM)
+    assert rec["msg_id"] == "m999"
+
+
+def test_divider_rows_dropped():
+    assert _normalize_group_message(_row(type=-2, text="2026-08-19 15:49"), OWNER, ROOM) is None
+
+
+def test_roomid_falls_back_to_queried_room():
+    rec = _normalize_group_message(_row(roomid=""), OWNER, ROOM)
+    assert rec["room_id"] == ROOM