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/vitest/dist/runners.d.ts

@@ -0,0 +1,48 @@
+import { VitestRunner, VitestRunnerImportSource, Suite, Task, CancelReason, Test, Custom, TaskContext, ExtendedContext } from '@vitest/runner';
+import { R as ResolvedConfig } from './reporters-w_64AS5f.js';
+import * as tinybench from 'tinybench';
+import 'vite';
+import 'vite-node';
+import '@vitest/snapshot';
+import '@vitest/expect';
+import '@vitest/runner/utils';
+import '@vitest/utils';
+import 'node:stream';
+import 'vite-node/client';
+import '@vitest/snapshot/manager';
+import 'vite-node/server';
+import 'node:worker_threads';
+import 'node:fs';
+import 'chai';
+
+declare class VitestTestRunner implements VitestRunner {
+    config: ResolvedConfig;
+    private snapshotClient;
+    private workerState;
+    private __vitest_executor;
+    private cancelRun;
+    constructor(config: ResolvedConfig);
+    importFile(filepath: string, source: VitestRunnerImportSource): unknown;
+    onBeforeRunFiles(): void;
+    onAfterRunFiles(): void;
+    onAfterRunSuite(suite: Suite): Promise<void>;
+    onAfterRunTask(test: Task): void;
+    onCancel(_reason: CancelReason): void;
+    onBeforeRunTask(test: Task): Promise<void>;
+    onBeforeRunSuite(suite: Suite): Promise<void>;
+    onBeforeTryTask(test: Task): void;
+    onAfterTryTask(test: Task): void;
+    extendTaskContext<T extends Test | Custom>(context: TaskContext<T>): ExtendedContext<T>;
+}
+
+declare class NodeBenchmarkRunner implements VitestRunner {
+    config: ResolvedConfig;
+    private __vitest_executor;
+    constructor(config: ResolvedConfig);
+    importTinybench(): Promise<typeof tinybench>;
+    importFile(filepath: string, source: VitestRunnerImportSource): unknown;
+    runSuite(suite: Suite): Promise<void>;
+    runTask(): Promise<void>;
+}
+
+export { NodeBenchmarkRunner, VitestTestRunner };