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/eye-off.js

@@ -0,0 +1,27 @@
+/**
+ * @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 EyeOff = createLucideIcon("EyeOff", [
+  ["path", { d: "M9.88 9.88a3 3 0 1 0 4.24 4.24", key: "1jxqfv" }],
+  [
+    "path",
+    {
+      d: "M10.73 5.08A10.43 10.43 0 0 1 12 5c7 0 10 7 10 7a13.16 13.16 0 0 1-1.67 2.68",
+      key: "9wicm4"
+    }
+  ],
+  [
+    "path",
+    { d: "M6.61 6.61A13.526 13.526 0 0 0 2 12s3 7 10 7a9.74 9.74 0 0 0 5.39-1.61", key: "1jreej" }
+  ],
+  ["line", { x1: "2", x2: "22", y1: "2", y2: "22", key: "a6p6uj" }]
+]);
+
+export { EyeOff as default };
+//# sourceMappingURL=eye-off.js.map