feat(frontend): add API client, layout, and routing

- Create Axios-based API client with sources, jobs, and dashboard endpoints
- Add responsive Layout component with navigation sidebar
- Set up React Router with Dashboard, Backups, and Settings routes
- Configure TanStack Query provider with default options
- Use lucide-react for navigation icons

frontend/node_modules/vitest/dist/workers/threads.js

@@ -0,0 +1,26 @@
+import { r as runBaseTests } from '../vendor/base.Ybri3C14.js';
+import { a as createThreadsRpcOptions } from '../vendor/utils.0uYuCbzo.js';
+import 'vite-node/client';
+import '../vendor/global.CkGT_TMy.js';
+import '../vendor/execute.fL3szUAI.js';
+import 'node:vm';
+import 'node:url';
+import 'node:fs';
+import 'vite-node/utils';
+import 'pathe';
+import '@vitest/utils/error';
+import '../path.js';
+import '@vitest/utils';
+import '../vendor/base.5NT-gWu5.js';
+
+class ThreadsBaseWorker {
+  getRpcOptions(ctx) {
+    return createThreadsRpcOptions(ctx);
+  }
+  runTests(state) {
+    return runBaseTests(state);
+  }
+}
+var threads = new ThreadsBaseWorker();
+
+export { threads as default };