feat(lesson-preparation): add AI evaluation, analytics, attachments, calendar, comments, review, substitutes, formative, and version diff

- Add actions-ai-evaluation, actions-analytics, actions-attachments, actions-calendar, actions-comments, actions-formative, actions-questions, actions-review, actions-substitutes

- Add corresponding data-access layers for each new action module

- Add calendar-view, curriculum-map-view, version-diff-viewer components

- Add editor-slice, selection-slice, version-slice hooks for state management

- Add document-diff and scope-check lib utilities

- Add default-question-service and external-questions-bridge services

src/modules/lesson-preparation/components/blocks/exercise-block.tsx

@@ -1,12 +1,14 @@
 "use client";
 
 import { useState } from "react";
+import Link from "next/link";
 import { useRouter } from "next/navigation";
 import { useTranslations } from "next-intl";
 import { useLessonPlanEditor } from "../../hooks/use-lesson-plan-editor";
 import { QuestionBankPicker } from "../question-bank-picker";
 import { InlineQuestionEditor } from "../inline-question-editor";
 import { PublishHomeworkDialog } from "../publish-homework-dialog";
+import { LessonPlanErrorBoundary } from "../lesson-plan-error-boundary";
 import { Button } from "@/shared/components/ui/button";
 import { Plus, Trash2 } from "lucide-react";
 import type {
@@ -120,12 +122,13 @@ export function ExerciseBlock({ blockId, data, classes, textbookId, chapterId }:
             <span className="bg-tertiary-container/20 text-tertiary px-2 py-1 rounded">
               {t("status.publishedAsHomework")}
             </span>
-            <a
+            {/* V4 P1-5 修复：原生 <a> 替换为 next/link 的 <Link> */}
+            <Link
               href="/teacher/homework"
               className="text-primary underline"
             >
               {t("action.viewHomework")}
-            </a>
+            </Link>
           </div>
         ) : (
           data.purpose === "after_class_homework" &&
@@ -140,31 +143,37 @@ export function ExerciseBlock({ blockId, data, classes, textbookId, chapterId }:
         )}
       </div>
       {showBank && (
-        <QuestionBankPicker
-          existingIds={data.items.map((i) => i.questionId)}
-          onPick={addItems}
-          onClose={() => setShowBank(false)}
-        />
+        <LessonPlanErrorBoundary>
+          <QuestionBankPicker
+            existingIds={data.items.map((i) => i.questionId)}
+            onPick={addItems}
+            onClose={() => setShowBank(false)}
+          />
+        </LessonPlanErrorBoundary>
       )}
       {showInline && (
-        <InlineQuestionEditor
-          textbookId={textbookId}
-          chapterId={chapterId}
-          onAdd={(item) => {
-            addItems([item]);
-            setShowInline(false);
-          }}
-          onClose={() => setShowInline(false)}
-        />
+        <LessonPlanErrorBoundary>
+          <InlineQuestionEditor
+            textbookId={textbookId}
+            chapterId={chapterId}
+            onAdd={(item) => {
+              addItems([item]);
+              setShowInline(false);
+            }}
+            onClose={() => setShowInline(false)}
+          />
+        </LessonPlanErrorBoundary>
       )}
       {showPublish && (
-        <PublishHomeworkDialog
-          planId={planId}
-          blockId={blockId}
-          classes={classes}
-          onClose={() => setShowPublish(false)}
-          onPublished={() => router.refresh()}
-        />
+        <LessonPlanErrorBoundary>
+          <PublishHomeworkDialog
+            planId={planId}
+            blockId={blockId}
+            classes={classes}
+            onClose={() => setShowPublish(false)}
+            onPublished={() => router.refresh()}
+          />
+        </LessonPlanErrorBoundary>
       )}
     </div>
   );