Initial commit: public frontend for GameNo.

Vue 3 + Vite student-facing app with routing, Pinia state, and API integration.

src/api/classesApi.js

@@ -0,0 +1,5 @@
+import axiosInstance from './axiosInstance'
+
+export const classesApi = {
+  getMyClasses: (params = {}) => axiosInstance.get('/classes/user/my-classes', { params })
+}