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/waypoints.js

@@ -0,0 +1,21 @@
+/**
+ * @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 Waypoints = createLucideIcon("Waypoints", [
+  ["circle", { cx: "12", cy: "4.5", r: "2.5", key: "r5ysbb" }],
+  ["path", { d: "m10.2 6.3-3.9 3.9", key: "1nzqf6" }],
+  ["circle", { cx: "4.5", cy: "12", r: "2.5", key: "jydg6v" }],
+  ["path", { d: "M7 12h10", key: "b7w52i" }],
+  ["circle", { cx: "19.5", cy: "12", r: "2.5", key: "1piiel" }],
+  ["path", { d: "m13.8 17.7 3.9-3.9", key: "1wyg1y" }],
+  ["circle", { cx: "12", cy: "19.5", r: "2.5", key: "13o1pw" }]
+]);
+
+export { Waypoints as default };
+//# sourceMappingURL=waypoints.js.map