build(frontend): 添加不同环境的环境变量配置文件

添加开发、预发和生产环境的环境变量配置文件，包含端口、代理路径和API基地址等配置项

frontend/src/pages/Logs.tsx

@@ -117,7 +117,7 @@ export default function Logs() {
       <PageHeader items={["系统管理","日志管理"]} title="" />
       <Form form={form} layout="inline" onFinish={() => fetchData(1, pageSize)} style={{ marginBottom: 12 }}>
         <Form.Item label="请求路径" name="path">
-          <Input placeholder="like /users" allowClear style={{ width: 260 }} />
+          <Input placeholder="like /users" allowClear style={{ width: 320 }} />
         </Form.Item>
         <Form.Item label="发起时间" name="time">
           <DatePicker.RangePicker showTime allowClear />

frontend/src/pages/Menus.tsx

@@ -448,7 +448,7 @@ export default function Menus(){
 
       <Form form={searchForm} layout="inline" onFinish={(vals: any)=>{ const kw = String(vals?.keyword ?? '').trim(); setKeyword(kw); fetchMenus(kw) }} style={{ marginBottom: 12 }}>
         <Form.Item name="keyword">
-          <Input allowClear placeholder="搜索菜单名称/路径/权限" style={{ width: 360 }} />
+          <Input allowClear placeholder="搜索菜单名称/路径/权限" style={{ width: 320 }} />
         </Form.Item>
         <Form.Item>
           <Space>

frontend/src/pages/Users.tsx

@@ -346,9 +346,9 @@ export default function Users(){
         columns={columns}
         pagination={{ current: page, pageSize, total, showSizeChanger: true, onChange: (p: number, ps?: number) => fetchUsers(p, ps ?? pageSize, keyword) }}
       />
-      <Typography.Paragraph type="secondary" style={{ marginTop: 12 }}>
+      {/* <Typography.Paragraph type="secondary" style={{ marginTop: 12 }}>
         提示：此页面已支持分页、创建、编辑与重置密码。
-      </Typography.Paragraph>
+      </Typography.Paragraph> */}
 
       <Modal title="新增用户" open={createOpen} onOk={handleCreate} onCancel={() => setCreateOpen(false)} okText="创建" width={840}>
         <Form form={form} layout="horizontal" labelCol={{ span: 2 }} wrapperCol={{ span: 22 }} labelAlign="right">

frontend/src/utils/axios.ts

@@ -7,11 +7,9 @@ export type ApiResp<T> = { code: number; message?: string; data?: T }
 // 在请求配置上携带一次性重试标记
 type RetryConfig = InternalAxiosRequestConfig & { _retry?: boolean }
 
-// 使用 Vite 的环境变量类型
-const isDev = import.meta.env.DEV
-const configuredBase = import.meta.env?.VITE_API_BASE || ''
-const baseURL = isDev ? '' : configuredBase
-const api: AxiosInstance = axios.create({ baseURL: baseURL ? `${baseURL}/api` : '/api', withCredentials: true })
+// 从 .env 读取 VITE_API_BASE，若未配置则回退到相对路径 /api
+const configuredBase = (import.meta.env?.VITE_API_BASE as string | undefined)?.trim() || ''
+const api: AxiosInstance = axios.create({ baseURL: configuredBase ? `${configuredBase}/api` : '/api', withCredentials: true })
 
 let isRefreshing = false
 let pendingQueue: { resolve: () => void; reject: (e: unknown) => void; config: RetryConfig }[] = []