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.js

@@ -0,0 +1,9 @@
+export { createTaskCollector, getCurrentSuite, getCurrentTest, getFn, getHooks, setFn, setHooks } from '@vitest/runner';
+export { createChainable } from '@vitest/runner/utils';
+export { g as getBenchFn, a as getBenchOptions } from './vendor/benchmark.yGkUTKnC.js';
+import '@vitest/utils';
+import './vendor/index.SMVOaj7F.js';
+import 'pathe';
+import './vendor/global.CkGT_TMy.js';
+import './vendor/env.AtSIuHFg.js';
+import 'std-env';