Refine desktop setup and remove bundled app center apps

electron/main/index.ts

@@ -40,7 +40,6 @@ import { createSignalQuitHandler } from './signal-quit';
 import { acquireProcessInstanceFileLock } from './process-instance-lock';
 import { getSetting } from '../utils/store';
 import { ensureBuiltinSkillsInstalled, ensurePreinstalledSkillsInstalled } from '../utils/skill-config';
-import { stopNianxxPlayService } from '../utils/nianxx-play-service';
 
 import { startHostApiServer } from '../api/server';
 import { HostEventBus } from '../api/event-bus';
@@ -665,7 +664,6 @@ if (gotTheLock) {
 
     hostEventBus.closeAll();
     hostApiServer?.close();
-    stopNianxxPlayService();
     void extensionRegistry.teardownAll();
 
     const stopPromise = gatewayManager.stop().catch((err) => {