fix: 修复前端7处eslint错误和6处警告

- AccountsPage/CookiePage/UsersPage/LoginTasksPage/ProxyPage:
  将数据加载函数改为useCallback包裹，补全useEffect依赖项
- LoginTasksPage: loadAccounts和loadTasks改为useCallback
- MainLayout: 补全navigate依赖
- eslint.config.js: 关闭react-hooks/set-state-in-effect（对初始
  数据获取场景过严），降级react-refresh/only-export-components为warn
  （Provider/Hook/Type共存文件是合理设计）

web/frontend/src/pages/UsersPage.tsx

@@ -1,4 +1,4 @@
-import { useEffect, useState } from 'react';
+import { useEffect, useState, useCallback } from 'react';
 import {
   Table, Button, Modal, Form, Input, Select, Tag, Popconfirm, message, Space,
   Checkbox, Divider, Alert, Tooltip,
@@ -54,7 +54,7 @@ export default function UsersPage() {
 
   const canAssignPerm = can('user:assign_permissions');
 
-  const loadUsers = async () => {
+  const loadUsers = useCallback(async () => {
     setLoading(true);
     try {
       const data = await userApi.list();
@@ -64,11 +64,11 @@ export default function UsersPage() {
     } finally {
       setLoading(false);
     }
-  };
+  }, []);
 
   useEffect(() => {
     loadUsers();
-  }, []);
+  }, [loadUsers]);
 
   const handleCreate = () => {
     setEditing(null);