Revert "fix(runtime): make plugin and box connectors resilient"

This reverts commit 0b461e5830.

src/langbot/pkg/core/app.py

@@ -4,7 +4,6 @@ import logging
 import asyncio
 import traceback
 import os
-import contextlib
 
 from ..platform import botmgr as im_mgr
 from ..platform.webhook_pusher import WebhookPusher
@@ -167,8 +166,7 @@ class Application:
     maintenance_service: maintenance_service.MaintenanceService = None
 
     def __init__(self):
-        self._shutdown_lock = asyncio.Lock()
-        self._shutdown_complete = False
+        pass
 
     async def initialize(self):
         pass
@@ -320,39 +318,7 @@ class Application:
             return default
         return parsed
 
-    async def shutdown(self):
-        """Stop application work and deterministically release runtime resources."""
-        async with self._shutdown_lock:
-            if self._shutdown_complete:
-                return
-
-            if self.task_mgr is not None:
-                self.task_mgr.cancel_by_scope(core_entities.LifecycleControlScope.APPLICATION)
-            if self.platform_mgr is not None:
-                with contextlib.suppress(Exception):
-                    await self.platform_mgr.shutdown()
-            if self.tool_mgr is not None:
-                with contextlib.suppress(Exception):
-                    await self.tool_mgr.shutdown()
-            if self.box_service is not None:
-                with contextlib.suppress(Exception):
-                    await self.box_service.shutdown()
-            if self.plugin_connector is not None:
-                with contextlib.suppress(Exception):
-                    await self.plugin_connector.aclose()
-
-            if self.task_mgr is not None:
-                tasks = [wrapper.task for wrapper in self.task_mgr.tasks if not wrapper.task.done()]
-                if tasks:
-                    await asyncio.gather(*tasks, return_exceptions=True)
-            self._shutdown_complete = True
-
     def dispose(self):
-        """Compatibility wrapper for callers that cannot await shutdown."""
-        loop = self.event_loop
-        if loop is not None and not loop.is_closed():
-            loop.create_task(self.shutdown())
-            return
         if self.plugin_connector is not None:
             self.plugin_connector.dispose()
         if self.box_service is not None: