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/lucide-react/dist/esm/icons/wind.js

@@ -0,0 +1,17 @@
+/**
+ * @license lucide-react v0.303.0 - ISC
+ *
+ * This source code is licensed under the ISC license.
+ * See the LICENSE file in the root directory of this source tree.
+ */
+
+import createLucideIcon from '../createLucideIcon.js';
+
+const Wind = createLucideIcon("Wind", [
+  ["path", { d: "M17.7 7.7a2.5 2.5 0 1 1 1.8 4.3H2", key: "1k4u03" }],
+  ["path", { d: "M9.6 4.6A2 2 0 1 1 11 8H2", key: "b7d0fd" }],
+  ["path", { d: "M12.6 19.4A2 2 0 1 0 14 16H2", key: "1p5cb3" }]
+]);
+
+export { Wind as default };
+//# sourceMappingURL=wind.js.map