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/react-smooth/lib/index.js

@@ -0,0 +1,29 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+Object.defineProperty(exports, "AnimateGroup", {
+  enumerable: true,
+  get: function get() {
+    return _AnimateGroup.default;
+  }
+});
+Object.defineProperty(exports, "configBezier", {
+  enumerable: true,
+  get: function get() {
+    return _easing.configBezier;
+  }
+});
+Object.defineProperty(exports, "configSpring", {
+  enumerable: true,
+  get: function get() {
+    return _easing.configSpring;
+  }
+});
+exports.default = void 0;
+var _Animate = _interopRequireDefault(require("./Animate"));
+var _easing = require("./easing");
+var _AnimateGroup = _interopRequireDefault(require("./AnimateGroup"));
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+var _default = exports.default = _Animate.default;