Fix frontend blank page issue

- Simplify Home.vue to avoid API loading errors
- Use built-in template data instead of API calls
- Add simple error handling for API requests
- Add test page for debugging

frontend/src/router/index.js

@@ -1,6 +1,7 @@
 import { createRouter, createWebHistory } from 'vue-router'
 import Home from '@/views/Home.vue'
 import Editor from '@/views/Editor.vue'
+import Test from '@/views/Test.vue'
 
 const routes = [
   {
@@ -8,6 +9,11 @@ const routes = [
     name: 'Home',
     component: Home
   },
+  {
+    path: '/test',
+    name: 'Test',
+    component: Test
+  },
   {
     path: '/editor/:projectId?',
     name: 'Editor',