feat(agent-runner): add plugin runner host integration

src/langbot/pkg/core/app.py

@@ -4,6 +4,7 @@ import logging
 import asyncio
 import traceback
 import os
+from typing import TYPE_CHECKING
 
 from ..platform import botmgr as im_mgr
 from ..platform.webhook_pusher import WebhookPusher
@@ -46,6 +47,9 @@ from ..telemetry import telemetry as telemetry_module
 from ..survey import manager as survey_module
 from ..skill import manager as skill_mgr
 
+if TYPE_CHECKING:
+    from ..agent.runner import AgentRunnerRegistry, AgentRunOrchestrator, AgentRunnerDefaultConfigService
+
 
 class Application:
     """Runtime application object and context"""
@@ -165,6 +169,13 @@ class Application:
 
     maintenance_service: maintenance_service.MaintenanceService = None
 
+    # Agent runner subsystem
+    agent_runner_registry: AgentRunnerRegistry = None
+
+    agent_runner_default_config_service: AgentRunnerDefaultConfigService = None
+
+    agent_run_orchestrator: AgentRunOrchestrator = None
+
     def __init__(self):
         pass