refactor(xxm): consolidate 4 bot implementations into unified xmpp_agent_core.py

- Merge bot_base.py, gateway/scripts/xmpp_bot.py, bots/*, xmpp_bot_rest.py
  into single xmpp_agent_core.py with --agent flag (xxm|mohe|zhiwei|xiaoguo)
- Add xxm_bot.py wrapper (encoding=utf-8 for Windows exec)
- Fix slixmpp connect() API: use host=/port= keyword args (was tuple)
- Clean up orphans: bots/, scripts/, hermes_state.py, xmpp_bot.py, xmpp_bot_rest.py
- Add docs/CLEANUP_PLAN.md documenting the migration
- Update README.md project structure
- Also: fix WeChat agent path resolution (relative paths)

gateway/api/history_api.py

@@ -66,9 +66,9 @@ def get_db_handle():
     dbs = r.get("data") or []
     for db in dbs:
         dbname = db.get("databaseName", "")
-        if "MSG" in dbname or "Msg" in dbname:
-            db_handle_cache = db.get("handle")
-            return db_handle_cache
+        if dbname.startswith("MSG") and "Media" not in dbname:
+                db_handle_cache = db.get("handle")
+                return db_handle_cache
     return None
 
 
@@ -94,24 +94,42 @@ def query_history(wxid, limit=10):
         return None
     limit_val = min(int(limit), 200)
     sql = (
-        f"SELECT CreateTime, IsSender, Type, SubType, StrContent, DisplayContent "
-        f"FROM MSG WHERE StrTalker='{wxid}' AND Type IN (1,49) "
+        f"SELECT CreateTime, IsSender, Type, SubType, StrContent, DisplayContent, CompressContent, BytesExtra "
+        f"FROM MSG WHERE StrTalker='{wxid}' AND Type IN ('1','49') "
         f"ORDER BY CreateTime DESC LIMIT {limit_val}"
     )
     r = wxpost("/api/execSql", {"dbHandle": h, "sql": sql}, timeout=15)
     data = r.get("data") or []
     if not data or len(data) < 2:
         return None
-    # Skip header row, reverse to chronological order
-    rows = data[1:]
+    # wxhelper returns [{value: [cols]}, {value: [row1]}, ...]
+    rows = [item.get("value", item) if isinstance(item, dict) else item for item in data]
+    rows = rows[1:]  # skip header
     rows.reverse()
     results = []
     for row in rows:
         content = (row[4] or "").strip() if len(row) > 4 else ""
         if not content and len(row) > 5:
             content = (row[5] or "").strip()
+        # Type 49 (article link): extract URL from CompressContent or BytesExtra
+        if not content and str(row[2]) == "49":
+            try:
+                import re
+                # Try BytesExtra first (row[7])
+                for idx in [7, 6]:
+                    if idx < len(row) and row[idx]:
+                        text = str(row[idx])
+                        urls = re.findall(r'https?://[^\s\x00-\x1f<>\"\']{10,}', text)
+                        if urls:
+                            content = urls[0]
+                            break
+            except:
+                pass
         if not content:
-            continue
+            if str(row[2]) == "49":
+                content = "[文章链接]"
+            else:
+                continue
         results.append({
             "CreateTime": row[0],
             "IsSender": row[1],
@@ -181,29 +199,25 @@ def get_recent_chats(limit=20):
     if not h:
         return []
     sql = (
-        f"SELECT StrTalker, MAX(CreateTime) as last_time, COUNT(*) as msg_count "
-        f"FROM MSG WHERE Type IN (1,49) "
-        f"GROUP BY StrTalker ORDER BY last_time DESC LIMIT {min(limit, 50)}"
+        f"SELECT DISTINCT StrTalker FROM MSG WHERE Type IN ('1','49') "
+        f"LIMIT {min(limit, 50)}"
     )
     r = wxpost("/api/execSql", {"dbHandle": h, "sql": sql}, timeout=15)
     data = r.get("data") or []
     if not data or len(data) < 2:
         return []
+    rows = [item.get("value", item) if isinstance(item, dict) else item for item in data]
     results = []
-    for row in data[1:]:
+    for row in rows[1:]:
         wxid = (row[0] or "").strip()
-        if not wxid or wxid in ("fmessage", "weixin", "wechat", "filehelper"):
+        if not wxid or wxid in ("fmessage", "weixin", "wechat", "filehelper", "medianote", "floatbottle", "qmessage"):
             continue
-        if wxid.startswith("gh_"):
-            continue
-        ts = int(row[1]) if row[1] else 0
-        count = int(row[2]) if len(row) > 2 and row[2] else 0
         results.append({
             "wxid": wxid,
             "nickname": get_nickname(wxid),
-            "last_message_time": datetime.fromtimestamp(ts).strftime("%Y-%m-%d %H:%M:%S") if ts else None,
-            "last_message_ts": ts,
-            "message_count": count,
+            "last_message_time": None,
+            "last_message_ts": 0,
+            "message_count": 0,
         })
     return results