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/tinypool/dist/esm/chunk-OECBSOR6.js

@@ -0,0 +1,12 @@
+// src/utils.ts
+function stdout() {
+  return console._stdout || process.stdout || void 0;
+}
+function stderr() {
+  return console._stderr || process.stderr || void 0;
+}
+
+export {
+  stdout,
+  stderr
+};