fix: correct import paths and syntax in frontend tests

dashboard/frontend/tests/test_basic.js

@@ -1,6 +1,6 @@
-"""
-Basic diagnostic tests to validate frontend test environment.
-"""
+/**
+ * Basic diagnostic tests to validate frontend test environment.
+ */
 import { describe, it, expect } from 'vitest';
 
 describe('Basic Environment Tests', () => {

dashboard/frontend/tests/unit/api.test.js

@@ -15,7 +15,7 @@ import {
   checkAuth,
   logout,
   tryRefreshSession,
-} from '../src/lib/api.js';
+} from '../../src/lib/api.js';
 
 describe('API Client - Token Management', () => {
   beforeEach(() => {