feat(admin): migrate admin UI to Vue3

admin-frontend/src/api/client.js

@@ -0,0 +1,30 @@
+import axios from 'axios'
+import { ElMessage } from 'element-plus'
+
+export const api = axios.create({
+  baseURL: '/yuyx/api',
+  timeout: 30_000,
+  withCredentials: true,
+})
+
+api.interceptors.response.use(
+  (response) => response,
+  (error) => {
+    const status = error?.response?.status
+    const payload = error?.response?.data
+    const message = payload?.error || payload?.message || error?.message || '请求失败'
+
+    if (status === 403) {
+      ElMessage.error(message || '需要管理员权限')
+    } else if (status) {
+      ElMessage.error(message)
+    } else if (error?.code === 'ECONNABORTED') {
+      ElMessage.error('请求超时')
+    } else {
+      ElMessage.error(message)
+    }
+
+    return Promise.reject(error)
+  },
+)
+