fix: follow-up fixes for salvaged PRs

- Fix GatewayApp → GatewayRunner import in api_server.py (PR #4976)
- Update launchd test assertions for new bootstrap/bootout/kickstart commands (PR #4892)
- Add nonlocal message declaration in run_sync() to fix UnboundLocalError (pre-existing scoping bug)

gateway/platforms/api_server.py

@@ -423,8 +423,8 @@ class APIServerAdapter(BasePlatformAdapter):
 
         # Load fallback provider chain so the API server platform has the
         # same fallback behaviour as Telegram/Discord/Slack (fixes #4954).
-        from gateway.run import GatewayApp
-        fallback_model = GatewayApp._load_fallback_model()
+        from gateway.run import GatewayRunner
+        fallback_model = GatewayRunner._load_fallback_model()
 
         agent = AIAgent(
             model=model,