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/aria-query/lib/index.js

@@ -0,0 +1,17 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.roles = exports.roleElements = exports.elementRoles = exports.dom = exports.aria = void 0;
+var _ariaPropsMap = _interopRequireDefault(require("./ariaPropsMap"));
+var _domMap = _interopRequireDefault(require("./domMap"));
+var _rolesMap = _interopRequireDefault(require("./rolesMap"));
+var _elementRoleMap = _interopRequireDefault(require("./elementRoleMap"));
+var _roleElementMap = _interopRequireDefault(require("./roleElementMap"));
+function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
+var aria = exports.aria = _ariaPropsMap.default;
+var dom = exports.dom = _domMap.default;
+var roles = exports.roles = _rolesMap.default;
+var elementRoles = exports.elementRoles = _elementRoleMap.default;
+var roleElements = exports.roleElements = _roleElementMap.default;