feat: 新增备课模块并修复全模块 P0/P1/P2 缺陷

主要变更:

- 新增 lesson-preparation 模块: 备课编辑器、节点编辑、AI 建议、知识点选择、版本历史、作业发布

- 新增 shared 通用组件: charts/question-bank-filters/schedule-list/ui (chip-nav/filter-bar/page-header/stat-card/stat-item)

- 新增 student/admin 端 loading.tsx 与 error.tsx, 优化加载与错误态体验

- 新增 teacher/lesson-plans 页面 (列表/新建/编辑)

- 新增 drizzle 迁移 0002_tiny_lionheart 及 snapshot

- 新增 textbooks/schema.ts 与 exams/utils/normalize-structure.ts

- 修复 Tiptap v3 SSR hydration 崩溃 (rich-text-block immediatelyRender: false)

- 重构多模块 data-access/actions/组件, 修复权限校验与类型规范

- 同步架构文档 004/005 反映新增模块、导出、依赖关系

- 归档 bugs/* 测试报告与 e2e 测试脚本 (admin/parent/student/teacher web_test)

src/app/(dashboard)/admin/users/import/page.tsx

@@ -1,9 +1,18 @@
-import { Metadata } from "next"
+import { Metadata } from "next"
+import type { JSX } from "react"
 import Link from "next/link"
 import { ArrowLeft, Users, FileSpreadsheet, Info } from "lucide-react"
 
 import { Button } from "@/shared/components/ui/button"
 import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/shared/components/ui/card"
+import {
+  Table,
+  TableBody,
+  TableCell,
+  TableHead,
+  TableHeader,
+  TableRow,
+} from "@/shared/components/ui/table"
 import { UserImportDialog } from "@/modules/users/components/user-import-dialog"
 
 export const metadata: Metadata = {
@@ -11,7 +20,9 @@ export const metadata: Metadata = {
   description: "通过 Excel 批量导入用户",
 }
 
-export default function UserImportPage() {
+export const dynamic = "force-dynamic"
+
+export default function UserImportPage(): JSX.Element {
   return (
     <div className="h-full flex-1 flex-col space-y-6 p-8 md:flex">
       <div className="flex items-center justify-between space-y-2">
@@ -64,7 +75,7 @@ export default function UserImportPage() {
         <Card>
           <CardHeader>
             <div className="flex items-center gap-2">
-              <Info className="h-5 w-5 text-amber-500" />
+              <Info className="h-5 w-5 text-muted-foreground" />
               <CardTitle className="text-base">注意事项</CardTitle>
             </div>
             <CardDescription>导入前请仔细阅读</CardDescription>
@@ -90,42 +101,42 @@ export default function UserImportPage() {
         </CardHeader>
         <CardContent>
           <div className="overflow-x-auto">
-            <table className="w-full text-sm">
-              <thead>
-                <tr className="border-b">
-                  <th className="py-2 pr-4 text-left font-medium">列名</th>
-                  <th className="py-2 pr-4 text-left font-medium">是否必填</th>
-                  <th className="py-2 pr-4 text-left font-medium">说明</th>
-                </tr>
-              </thead>
-              <tbody className="divide-y">
-                <tr>
-                  <td className="py-2 pr-4 font-medium">姓名</td>
-                  <td className="py-2 pr-4">必填</td>
-                  <td className="py-2 pr-4 text-muted-foreground">用户姓名</td>
-                </tr>
-                <tr>
-                  <td className="py-2 pr-4 font-medium">邮箱</td>
-                  <td className="py-2 pr-4">必填</td>
-                  <td className="py-2 pr-4 text-muted-foreground">登录账号，需符合邮箱格式且唯一</td>
-                </tr>
-                <tr>
-                  <td className="py-2 pr-4 font-medium">角色</td>
-                  <td className="py-2 pr-4">必填</td>
-                  <td className="py-2 pr-4 text-muted-foreground">admin / teacher / student / parent / grade_head / teaching_head</td>
-                </tr>
-                <tr>
-                  <td className="py-2 pr-4 font-medium">手机</td>
-                  <td className="py-2 pr-4">选填</td>
-                  <td className="py-2 pr-4 text-muted-foreground">联系电话</td>
-                </tr>
-                <tr>
-                  <td className="py-2 pr-4 font-medium">班级邀请码</td>
-                  <td className="py-2 pr-4">选填</td>
-                  <td className="py-2 pr-4 text-muted-foreground">仅 student 角色有效，6 位邀请码</td>
-                </tr>
-              </tbody>
-            </table>
+            <Table>
+              <TableHeader>
+                <TableRow>
+                  <TableHead>列名</TableHead>
+                  <TableHead>是否必填</TableHead>
+                  <TableHead>说明</TableHead>
+                </TableRow>
+              </TableHeader>
+              <TableBody>
+                <TableRow>
+                  <TableCell className="font-medium">姓名</TableCell>
+                  <TableCell>必填</TableCell>
+                  <TableCell className="text-muted-foreground">用户姓名</TableCell>
+                </TableRow>
+                <TableRow>
+                  <TableCell className="font-medium">邮箱</TableCell>
+                  <TableCell>必填</TableCell>
+                  <TableCell className="text-muted-foreground">登录账号，需符合邮箱格式且唯一</TableCell>
+                </TableRow>
+                <TableRow>
+                  <TableCell className="font-medium">角色</TableCell>
+                  <TableCell>必填</TableCell>
+                  <TableCell className="text-muted-foreground">admin / teacher / student / parent / grade_head / teaching_head</TableCell>
+                </TableRow>
+                <TableRow>
+                  <TableCell className="font-medium">手机</TableCell>
+                  <TableCell>选填</TableCell>
+                  <TableCell className="text-muted-foreground">联系电话</TableCell>
+                </TableRow>
+                <TableRow>
+                  <TableCell className="font-medium">班级邀请码</TableCell>
+                  <TableCell>选填</TableCell>
+                  <TableCell className="text-muted-foreground">仅 student 角色有效，6 位邀请码</TableCell>
+                </TableRow>
+              </TableBody>
+            </Table>
           </div>
         </CardContent>
       </Card>