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/nanoid/async/package.json

@@ -0,0 +1,12 @@
+{
+  "type": "module",
+  "main": "index.cjs",
+  "module": "index.js",
+  "react-native": {
+    "./index.js": "./index.native.js"
+  },
+  "browser": {
+    "./index.js": "./index.browser.js",
+    "./index.cjs": "./index.browser.cjs"
+  }
+}