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/resolve/test/resolver/multirepo/packages/package-b/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "@my-scope/package-b",
+  "private": true,
+  "version": "0.0.0",
+  "description": "",
+  "license": "MIT",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: run tests from root\" && exit 1"
+  },
+  "dependencies": {
+    "@my-scope/package-a": "^0.0.0"
+  }
+}