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/suite-dWqIFb_-.d.ts

@@ -0,0 +1,10 @@
+import { Custom } from '@vitest/runner';
+import '@vitest/runner/utils';
+import { ap as BenchFunction, aq as BenchmarkAPI } from './reporters-w_64AS5f.js';
+import { Options } from 'tinybench';
+
+declare function getBenchOptions(key: Custom): Options;
+declare function getBenchFn(key: Custom): BenchFunction;
+declare const bench: BenchmarkAPI;
+
+export { getBenchOptions as a, bench as b, getBenchFn as g };