feat(scraper): WA群抓取(type=1真机验证,223群)+群成员派生(12840成员/750群)

- wa-groups 实体:businessFriendList type=1 真机验证返回群,行结构是好友字段名
  (friendUid=@g.us 群ID/nickName=群名),专用 _normalize_wa_group_row
- backfill_group_members.py:无独立成员API,从群消息派生(talker=成员,sender_name=昵称)
- full_sync_all.sh:+4步(5b WA群/语音后录音重链接/8b 群消息+成员/消息上限99999)

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

yunke-server/scripts/backfill_group_members.py

@@ -0,0 +1,63 @@
+#!/usr/bin/env python
+"""从群消息派生 group_member（发言者=成员）。
+
+云客 API 不单独给群成员列表（chatroom payload 的 memberIds 我们抓不到，
+2026-08-20 确认），但群消息的 talker 就是发言成员的 wxid、sender_name 是其
+群昵称——368k 群消息足够派生出高质量成员表（覆盖所有发过言的成员）。
+
+昵称取该成员在群里最新一条消息的 sender_name（SQLite 的 max()+裸列行为，
+取 max(timestamp) 同行的值）。幂等可重跑；建议在 group-messages 之后执行。
+
+用法:
+    cd yunke-server && DB_URL="sqlite+aiosqlite:///./smoke.db" \
+      .venv/Scripts/python.exe -m scripts.backfill_group_members
+"""
+from __future__ import annotations
+
+import asyncio
+import logging
+
+from sqlalchemy import text as sa_text
+
+from app.db.base import async_engine, async_session_maker
+from app.db.models import GroupMember
+from app.storage.repos import _upsert_one
+
+logging.basicConfig(level=logging.INFO, format="%(asctime)s %(levelname)s %(message)s")
+log = logging.getLogger("backfill_group_members")
+
+# max(timestamp) 裸列：SQLite 保证 sender_name 取自 timestamp 最大的那行
+SQL = sa_text("""
+SELECT room_id, talker_id, sender_name, max(timestamp) AS last_ts, count(*) AS msg_count
+FROM message
+WHERE channel = 'wechat' AND room_id IS NOT NULL AND room_id != ''
+  AND talker_id IS NOT NULL AND talker_id != ''
+GROUP BY room_id, talker_id
+""")
+
+
+async def main() -> None:
+    async with async_engine.connect() as conn:
+        rows = (await conn.execute(SQL)).fetchall()
+    log.info(f"派生出 {len(rows)} 个 (群, 成员) 对")
+
+    async with async_session_maker() as session:
+        for room_id, talker_id, sender_name, last_ts, msg_count in rows:
+            await _upsert_one(session, GroupMember, {
+                "channel": "wechat",
+                "room_id": room_id,
+                "member_id": talker_id,
+                "nickname": sender_name,
+                # raw_json 附加派生统计，抽屉可见
+                "raw_json": {
+                    "derived_from": "group_messages",
+                    "msg_count": msg_count,
+                    "last_msg_ts": last_ts,
+                },
+            })
+        await session.commit()
+    log.info(f"DONE: group_member upserted={len(rows)}")
+
+
+if __name__ == "__main__":
+    asyncio.run(main())