feat(watcher): watched bots report capture uptime like the userbot

backend/src/watcher/registry.py

@@ -113,6 +113,12 @@ class BotRegistry:
     def running(self) -> list[int]:
         return list(self._running)
 
+    @property
+    def connected_accounts(self) -> list[int]:
+        return [
+            bot.account_id for bot in self._running.values() if bot.client.is_connected
+        ]
+
     async def sync(self) -> None:
         async with self._lock:
             await self._adopt_dropped_in()