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/data-access-versions.ts

@@ -59,9 +59,19 @@ export async function createLessonPlanVersion(input: {
   userId: string;
   isAuto: boolean;
   label?: string;
-}): Promise<{ versionNo: number }> {
+}): Promise<{ versionNo: number } | null> {
   // P0 修复：max(versionNo)+1 必须在事务内完成，避免并发产生重复版本号
   return await db.transaction(async (tx) => {
+    // 校验 planId 归属
+    const plan = await tx
+      .select({ id: lessonPlans.id })
+      .from(lessonPlans)
+      .where(
+        and(eq(lessonPlans.id, input.planId), eq(lessonPlans.creatorId, input.userId)),
+      )
+      .limit(1);
+    if (plan.length === 0) return null;
+
     const maxRow = await tx
       .select({ maxNo: max(lessonPlanVersions.versionNo) })
       .from(lessonPlanVersions)
@@ -151,8 +161,17 @@ export async function revertToVersion(
 
 export async function pruneAutoVersions(
   planId: string,
+  userId: string,
   keep = 50,
-): Promise<void> {
+): Promise<number> {
+  // 校验 planId 归属
+  const plan = await db
+    .select({ id: lessonPlans.id })
+    .from(lessonPlans)
+    .where(and(eq(lessonPlans.id, planId), eq(lessonPlans.creatorId, userId)))
+    .limit(1);
+  if (plan.length === 0) return 0;
+
   const rows = await db
     .select({
       id: lessonPlanVersions.id,
@@ -163,10 +182,10 @@ export async function pruneAutoVersions(
     .where(eq(lessonPlanVersions.planId, planId))
     .orderBy(desc(lessonPlanVersions.versionNo));
 
-  if (rows.length <= keep) return;
+  if (rows.length <= keep) return 0;
   // 保留前 keep 条；超出部分只删 isAuto=true 的
   const toDelete = rows.slice(keep).filter((r) => r.isAuto);
-  if (toDelete.length === 0) return;
+  if (toDelete.length === 0) return 0;
   await db
     .delete(lessonPlanVersions)
     .where(
@@ -178,4 +197,5 @@ export async function pruneAutoVersions(
         ),
       ),
     );
+  return toDelete.length;
 }