Implement Django backend and Vue frontend structure

- Django backend with projects, templates, exports apps
- SQLite database models for Project, Asset, CardLayer
- REST API endpoints for project management
- Vue frontend with Vite, Element Plus, Fabric.js
- Home page for project selection
- Editor page with Fabric.js canvas integration

frontend/src/router/index.js

@@ -0,0 +1,23 @@
+import { createRouter, createWebHistory } from 'vue-router'
+import Home from '@/views/Home.vue'
+import Editor from '@/views/Editor.vue'
+
+const routes = [
+  {
+    path: '/',
+    name: 'Home',
+    component: Home
+  },
+  {
+    path: '/editor/:projectId?',
+    name: 'Editor',
+    component: Editor
+  }
+]
+
+const router = createRouter({
+  history: createWebHistory(),
+  routes
+})
+
+export default router