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/vite-node/dist/cli.d.ts

@@ -0,0 +1,21 @@
+import { V as ViteNodeServerOptions } from './index-O2IrwHKf.js';
+import './trace-mapping.d-xyIfZtPm.js';
+
+interface CliOptions {
+    'root'?: string;
+    'script'?: boolean;
+    'config'?: string;
+    'mode'?: string;
+    'watch'?: boolean;
+    'options'?: ViteNodeServerOptionsCLI;
+    'version'?: boolean;
+    'help'?: boolean;
+    '--'?: string[];
+}
+type Optional<T> = T | undefined;
+type ComputeViteNodeServerOptionsCLI<T extends Record<string, any>> = {
+    [K in keyof T]: T[K] extends Optional<RegExp[]> ? string | string[] : T[K] extends Optional<(string | RegExp)[]> ? string | string[] : T[K] extends Optional<(string | RegExp)[] | true> ? string | string[] | true : T[K] extends Optional<Record<string, any>> ? ComputeViteNodeServerOptionsCLI<T[K]> : T[K];
+};
+type ViteNodeServerOptionsCLI = ComputeViteNodeServerOptionsCLI<ViteNodeServerOptions>;
+
+export type { CliOptions, ViteNodeServerOptionsCLI };