优化数据隔离，进行权限控制

app/routes/_index.tsx

@@ -1,5 +1,5 @@
 import { useState, useEffect } from 'react';
-import { useNavigate, Form } from '@remix-run/react';
+import { useNavigate, Form, useLoaderData } from '@remix-run/react';
 import { type MetaFunction, type ActionFunctionArgs, LoaderFunctionArgs, redirect } from "@remix-run/node";
 import styles from "~/styles/pages/home.css?url";
 import dayjs from 'dayjs';
@@ -30,21 +30,27 @@ export async function action({ request }: ActionFunctionArgs) {
 
 // 验证用户登录状态
 export async function loader({ request }: LoaderFunctionArgs) {
-  const { isAuthenticated } = await getUserSession(request);
+  const { isAuthenticated, userRole } = await getUserSession(request);
   
   if (!isAuthenticated) {
     return redirect("/login");
   }
-  return null;
+  return Response.json({ userRole });
 }
 
 export default function Index() {
   const navigate = useNavigate();
+  const { userRole } = useLoaderData<typeof loader>();
   const [currentDateTime, setCurrentDateTime] = useState({
     date: '',
     time: ''
   });
   
+  // 打印服务器端传递的用户角色
+  useEffect(() => {
+    console.log('_index 服务器返回的用户角色:', userRole);
+  }, [userRole]);
+  
   // 更新日期时间
   useEffect(() => {
     const updateDateTime = () => {
@@ -83,10 +89,8 @@ export default function Index() {
 
   // 处理登出
   const handleLogout = () => {
-    // 清除sessionStorage中的用户角色信息
+    // 清除sessionStorage中的所有数据
     if (typeof window !== 'undefined') {
-      sessionStorage.removeItem('userRole');
-      // 可以根据需要清除其他会话数据
       sessionStorage.clear();
     }
     
@@ -94,6 +98,9 @@ export default function Index() {
     const form = document.getElementById('logout-form') as HTMLFormElement;
     if (form) {
       form.submit();
+    } else {
+      // 如果找不到表单，直接导航到登录页
+      navigate('/login');
     }
   };
 
@@ -117,7 +124,7 @@ export default function Index() {
           <span className="datetime">{currentDateTime.date} {currentDateTime.time}</span>
           <div className="user">
             <img src="/avatar.png" alt="用户头像" className="avatar" />
-            <span className="username">系统管理员</span>
+            <span className="username">{userRole === 'developer' ? '系统管理员' : '普通用户'}</span>
             <button 
               onClick={handleLogout} 
               className="logout-button"
@@ -163,8 +170,8 @@ export default function Index() {
           {/* 智慧法务大模型模块 */}
           <div 
             className="module-card" 
-            onClick={() => handleModuleClick('/prompts', 'model')}
-            onKeyDown={(e) => handleKeyDown('/prompts', 'model', e)}
+            onClick={() => handleModuleClick('/', 'model')}
+            onKeyDown={(e) => handleKeyDown('/', 'model', e)}
             role="button"
             tabIndex={0}
             aria-label="智慧法务大模型"