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/scroll-text.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 ScrollText = createLucideIcon("ScrollText", [
+  [
+    "path",
+    { d: "M8 21h12a2 2 0 0 0 2-2v-2H10v2a2 2 0 1 1-4 0V5a2 2 0 1 0-4 0v3h4", key: "13a6an" }
+  ],
+  ["path", { d: "M19 17V5a2 2 0 0 0-2-2H4", key: "zz82l3" }],
+  ["path", { d: "M15 8h-5", key: "1khuty" }],
+  ["path", { d: "M15 12h-5", key: "r7krc0" }]
+]);
+
+export { ScrollText as default };
+//# sourceMappingURL=scroll-text.js.map