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/@babel/helper-compilation-targets/lib/targets.js

@@ -0,0 +1,28 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.unreleasedLabels = exports.browserNameMap = void 0;
+const unreleasedLabels = exports.unreleasedLabels = {
+  safari: "tp"
+};
+const browserNameMap = exports.browserNameMap = {
+  and_chr: "chrome",
+  and_ff: "firefox",
+  android: "android",
+  chrome: "chrome",
+  edge: "edge",
+  firefox: "firefox",
+  ie: "ie",
+  ie_mob: "ie",
+  ios_saf: "ios",
+  node: "node",
+  deno: "deno",
+  op_mob: "opera_mobile",
+  opera: "opera",
+  safari: "safari",
+  samsung: "samsung"
+};
+
+//# sourceMappingURL=targets.js.map