feat(app): add error/loading boundaries across all dashboard routes and new routes

- Add error.tsx and loading.tsx boundaries for admin, parent, student, teacher routes

- Add admin announcements edit, audit-logs overview, curriculum-map, invitation-codes, permissions, questions, roles routes

- Add admin elective detail and components, files, course-plans, users, scheduling boundaries

- Add messages group-compose route

- Add parent course-plans, elective, grades report-card, practice routes

- Add student course-plans, elective detail, error-book dialogs, grades report-card, learning study-path, leave, schedule boundaries

- Add teacher attendance report, classes boundaries, course-plans boundaries, elective, exams analytics/edit-rich/all/create/new, grades report-card, homework boundaries, leave, lesson-plans calendar

- Add auth loading, onboarding loading, api cron

src/app/(dashboard)/teacher/lesson-plans/[planId]/edit/page.tsx

@@ -5,48 +5,25 @@ import { getLessonPlanById } from "@/modules/lesson-preparation/data-access"
 import { LessonPlanEditor } from "@/modules/lesson-preparation/components/lesson-plan-editor"
 import { LessonPlanProviderSetup } from "@/modules/lesson-preparation/providers/lesson-plan-provider-setup"
 import { getTeacherClasses } from "@/modules/classes/data-access"
-import { getTextbookById, getChaptersByTextbookId } from "@/modules/textbooks/data-access"
-import { getAuthContext } from "@/shared/lib/auth-guard"
+import { getTextbookById, getChaptersByTextbookId, findChapterById } from "@/modules/textbooks/data-access"
+import { requirePermission } from "@/shared/lib/auth-guard"
+import { Permissions } from "@/shared/types/permissions"
 import { Skeleton } from "@/shared/components/ui/skeleton"
-import {
-  AiClientProvider,
-  type AiClientService,
-} from "@/modules/ai/context/ai-client-provider"
-import {
-  aiChatAction,
-  suggestSimilarQuestionsAction,
-  suggestGradingAction,
-  generateLessonContentAction,
-  generateQuestionVariantAction,
-  analyzeWeaknessAction,
-} from "@/modules/ai/actions"
+import { AiClientProvider } from "@/modules/ai/context/ai-client-provider"
+import { createCoreAiClientService } from "@/modules/ai/context/create-ai-client-service"
+// P0-11 修复：通过 slot 组件注入 AI 功能，避免备课模块直接 import @/modules/ai
+import { AiContentGeneratorSlot } from "./ai-content-generator-slot"
 
 export const dynamic = "force-dynamic"
 
-/**
- * 构建 AI 客户端服务（Server Action 引用集合）
- *
- * 通过 React Context 注入，客户端组件不直接 import actions，
- * 遵循依赖注入模式，便于测试时替换为 mock。
- */
-function createAiClientService(): AiClientService {
-  return {
-    chat: aiChatAction,
-    suggestSimilarQuestions: suggestSimilarQuestionsAction,
-    suggestGrading: suggestGradingAction,
-    generateLessonContent: generateLessonContentAction,
-    generateQuestionVariant: generateQuestionVariantAction,
-    analyzeWeakness: analyzeWeaknessAction,
-  }
-}
-
 export default async function EditLessonPlanPage({
   params,
 }: {
   params: Promise<{ planId: string }>
 }): Promise<JSX.Element> {
   const { planId } = await params
-  const ctx = await getAuthContext()
+  // V4 P0-2 修复：页面层补齐 requirePermission 权限校验
+  const ctx = await requirePermission(Permissions.LESSON_PLAN_READ)
 
   const [plan, teacherClasses] = await Promise.all([
     getLessonPlanById(planId, ctx.userId),
@@ -64,22 +41,13 @@ export default async function EditLessonPlanPage({
     textbookTitle = textbook?.title
     if (plan.chapterId) {
       const chapters = await getChaptersByTextbookId(plan.textbookId)
-      const findChapter = (list: typeof chapters): typeof chapters[number] | undefined => {
-        for (const ch of list) {
-          if (ch.id === plan.chapterId) return ch
-          if (ch.children && ch.children.length > 0) {
-            const found = findChapter(ch.children as typeof chapters)
-            if (found) return found
-          }
-        }
-        return undefined
-      }
-      const chapter = findChapter(chapters)
+      // P1-6 修复：使用共享工具 findChapterById 替代页面内重复的递归函数
+      const chapter = findChapterById(chapters, plan.chapterId)
       chapterTitle = chapter?.title
     }
   }
 
-  const aiClientService = createAiClientService()
+  const aiClientService = createCoreAiClientService()
 
   return (
     <AiClientProvider service={aiClientService}>
@@ -102,6 +70,7 @@ export default async function EditLessonPlanPage({
               textbookTitle={textbookTitle}
               chapterTitle={chapterTitle}
               classes={classes}
+              aiContentGenerator={AiContentGeneratorSlot}
             />
           </Suspense>
         </div>