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/autoprefixer/lib/hacks/border-radius.js

@@ -0,0 +1,40 @@
+let Declaration = require('../declaration')
+
+class BorderRadius extends Declaration {
+  /**
+   * Return unprefixed version of property
+   */
+  normalize(prop) {
+    return BorderRadius.toNormal[prop] || prop
+  }
+
+  /**
+   * Change syntax, when add Mozilla prefix
+   */
+  prefixed(prop, prefix) {
+    if (prefix === '-moz-') {
+      return prefix + (BorderRadius.toMozilla[prop] || prop)
+    }
+    return super.prefixed(prop, prefix)
+  }
+}
+
+BorderRadius.names = ['border-radius']
+
+BorderRadius.toMozilla = {}
+BorderRadius.toNormal = {}
+
+for (let ver of ['top', 'bottom']) {
+  for (let hor of ['left', 'right']) {
+    let normal = `border-${ver}-${hor}-radius`
+    let mozilla = `border-radius-${ver}${hor}`
+
+    BorderRadius.names.push(normal)
+    BorderRadius.names.push(mozilla)
+
+    BorderRadius.toMozilla[normal] = mozilla
+    BorderRadius.toNormal[mozilla] = normal
+  }
+}
+
+module.exports = BorderRadius