Add Vue frontend application

frontend/src/api/index.ts

@@ -0,0 +1,29 @@
+import axios from 'axios'
+
+const api = axios.create({
+  baseURL: import.meta.env.VITE_API_URL || 'http://localhost:8000',
+  timeout: 30000,
+})
+
+// 请求拦截器：添加 Token
+api.interceptors.request.use((config) => {
+  const token = localStorage.getItem('access_token')
+  if (token) {
+    config.headers.Authorization = `Bearer ${token}`
+  }
+  return config
+})
+
+// 响应拦截器：处理错误
+api.interceptors.response.use(
+  (response) => response,
+  async (error) => {
+    if (error.response?.status === 401) {
+      localStorage.removeItem('access_token')
+      window.location.href = '/login'
+    }
+    return Promise.reject(error)
+  }
+)
+
+export default api