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/modules/settings/components/notification-preferences-form.tsx

@@ -12,7 +12,7 @@ import { Switch } from "@/shared/components/ui/switch"
 import { Label } from "@/shared/components/ui/label"
 import { Separator } from "@/shared/components/ui/separator"
 import { updateNotificationPreferencesAction } from "@/modules/messaging/actions"
-import type { NotificationPreferences } from "@/modules/messaging/types"
+import type { NotificationPreferences } from "@/modules/notifications/types"
 
 interface NotificationPreferencesFormProps {
   preferences: NotificationPreferences
@@ -118,7 +118,7 @@ function SubmitButton() {
 export function NotificationPreferencesForm({ preferences }: NotificationPreferencesFormProps) {
   const [state, formAction] = useActionState(updateNotificationPreferencesAction, null)
 
-  // 本地状态用于即时反馈 Switch 切换
+  // Local state for immediate Switch toggle feedback
   const [channels, setChannels] = React.useState({
     emailEnabled: preferences.emailEnabled,
     smsEnabled: preferences.smsEnabled,
@@ -158,7 +158,7 @@ export function NotificationPreferencesForm({ preferences }: NotificationPrefere
       </CardHeader>
       <form action={formAction}>
         <CardContent className="space-y-6">
-          {/* 通知渠道 */}
+          {/* Delivery channels */}
           <div className="space-y-4">
             <div>
               <h4 className="text-sm font-medium">Delivery Channels</h4>
@@ -183,7 +183,7 @@ export function NotificationPreferencesForm({ preferences }: NotificationPrefere
                     </div>
                   </div>
                   <div className="flex items-center gap-2">
-                    {/* 隐藏的 checkbox 用于表单提交 */}
+                    {/* Hidden checkbox for form submission */}
                     <input
                       type="checkbox"
                       name={item.key}
@@ -206,7 +206,7 @@ export function NotificationPreferencesForm({ preferences }: NotificationPrefere
 
           <Separator />
 
-          {/* 通知类别 */}
+          {/* Notification categories */}
           <div className="space-y-4">
             <div>
               <h4 className="text-sm font-medium">Notification Categories</h4>