perf: optimize app startup and background lifecycles

electron/api/host-api-transport.ts

@@ -0,0 +1,18 @@
+/**
+ * Transport-only path classification. Kept free of route imports so the
+ * lightweight IPC registration path does not eagerly load every Host API
+ * service before the first window is painted.
+ */
+export function shouldUseLoopbackHostApi(path: string, method = 'GET'): boolean {
+  const normalizedMethod = method.toUpperCase();
+  const pathname = path.split('?', 1)[0] || path;
+  if (pathname === '/api/events' || pathname === '/api/opencode/events') return true;
+  if (pathname.startsWith('/api/ai-proxy/')) return true;
+  if (pathname.includes('/events') && pathname.startsWith('/api/image-workspace/')) return true;
+  if (
+    pathname.includes('/assets/')
+    && pathname.endsWith('/content')
+    && (normalizedMethod === 'GET' || normalizedMethod === 'HEAD')
+  ) return true;
+  return false;
+}