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/vendor/index.SMVOaj7F.js

@@ -0,0 +1,22 @@
+import { relative } from 'pathe';
+import '@vitest/runner/utils';
+import '@vitest/utils';
+import { g as getWorkerState } from './global.CkGT_TMy.js';
+import './env.AtSIuHFg.js';
+
+function getRunMode() {
+  return getWorkerState().config.mode;
+}
+function isRunningInBenchmark() {
+  return getRunMode() === "benchmark";
+}
+const relativePath = relative;
+function removeUndefinedValues(obj) {
+  for (const key in Object.keys(obj)) {
+    if (obj[key] === void 0)
+      delete obj[key];
+  }
+  return obj;
+}
+
+export { removeUndefinedValues as a, isRunningInBenchmark as i, relativePath as r };