fix: 取消自动删除节点，改为只更新状态；检测加专线提示

bot.py

@@ -251,6 +251,7 @@ async def cb_menu(update: Update, context: ContextTypes.DEFAULT_TYPE):
         if not results:
             await send_del(q.message, '📭 暂无订阅')
         else:
+            results.append('\n⚠️ _检测从服务器发起，专线节点可能显示不通但实际可用_')
             await send_del(q.message, '📊 *检测结果*\n\n' + '\n'.join(results), parse_mode='Markdown')
 
     elif action == 'menu_pick_multi':
@@ -919,32 +920,18 @@ async def cb_subgroups(update: Update, context: ContextTypes.DEFAULT_TYPE):
         except: pass
 
 async def auto_cleanup(bot_token):
-    """Every 6h: check nodes, auto-delete dead ones from default subs only, check group nodes but don't delete"""
+    """Every 6h: check all nodes, update alive status only (no auto-delete)"""
-    import httpx
     await asyncio.sleep(60)
     while True:
         data = load_data()
-        # 默认分组：检测并删除不可用
-        if data['subs']:
-            dead = []
-            for s in list(data['subs']):
-                ok = await check_node(s['link'], s['type'])
-                if not ok:
-                    dead.append(s)
-                    data['subs'].remove(s)
-            if dead:
-                save_data(data)
-                names = '\n'.join(f"• [{s['type']}] {s['name']}" for s in dead)
-                msg = f'🗑 自动清理 — 已删除 {len(dead)} 个不可用节点:\n\n{names}'
-                for gid in data.get('groups', []):
-                    try:
-                        async with httpx.AsyncClient() as c:
-                            await c.post(f'https://api.telegram.org/bot{bot_token}/sendMessage',
-                                        json={'chat_id': gid, 'text': msg})
-                    except: pass
-                log.info(f'Auto cleanup: removed {len(dead)} dead nodes')
-        # 订阅分组：只更新存活状态，不删除
         changed = False
+        # 默认分组：只更新状态
+        for s in data['subs']:
+            ok = await check_node(s['link'], s['type'])
+            if s.get('alive', True) != ok:
+                s['alive'] = ok
+                changed = True
+        # 订阅分组：只更新状态
         for sg in data.get('sub_groups', []):
             for s in sg.get('nodes', []):
                 ok = await check_node(s['link'], s['type'])
@@ -953,6 +940,7 @@ async def auto_cleanup(bot_token):
                     changed = True
         if changed:
             save_data(data)
+            log.info('Auto check: updated node status')
         await asyncio.sleep(21600)
 
 def run_cleanup():