feat(lesson-preparation): add anchor canvas design, new blocks, and textbook content node

- Add anchor injector for canvas-based anchor positioning

- Add new block components: blackboard, homework, import, key-point, new-teaching, objective, summary

- Add textbook content node for React Flow canvas

- Update actions (kp, publish, main), data-access (templates, versions, main)

- Update editor, node-editor, block-renderer, and picker components

- Update schema, types, hooks, and lib utilities (document-migration, node-summary, rf-mappers)

src/modules/lesson-preparation/components/lesson-plan-card.tsx

@@ -32,25 +32,37 @@ export function LessonPlanCard({ plan }: { plan: LessonPlanListItem }) {
   const service = ctx?.service ?? null;
 
   async function handleArchive() {
-    const res = service
-      ? await service.deleteLessonPlan(plan.id)
-      : await deleteLessonPlanAction(plan.id);
-    if (res.success) {
-      tracker.track("lesson_plan.archive", { planId: plan.id });
-      toast.success(t("status.archived"));
-      router.refresh();
-    } else {
-      toast.error(res.message ?? t("error.delete"));
+    try {
+      const res = service
+        ? await service.deleteLessonPlan(plan.id)
+        : await deleteLessonPlanAction(plan.id);
+      if (res.success) {
+        tracker.track("lesson_plan.archive", { planId: plan.id });
+        toast.success(t("status.archived"));
+        router.refresh();
+      } else {
+        toast.error(res.message ?? t("error.delete"));
+      }
+    } catch (e) {
+      console.error("[LessonPlanCard] archive failed", e);
+      toast.error(t("error.delete"));
     }
   }
 
   async function handleDuplicate() {
-    const res = service
-      ? await service.duplicateLessonPlan(plan.id)
-      : await duplicateLessonPlanAction(plan.id);
-    if (res.success) {
-      tracker.track("lesson_plan.duplicate", { planId: plan.id });
-      router.refresh();
+    try {
+      const res = service
+        ? await service.duplicateLessonPlan(plan.id)
+        : await duplicateLessonPlanAction(plan.id);
+      if (res.success) {
+        tracker.track("lesson_plan.duplicate", { planId: plan.id });
+        router.refresh();
+      } else {
+        toast.error(res.message ?? t("error.duplicate"));
+      }
+    } catch (e) {
+      console.error("[LessonPlanCard] duplicate failed", e);
+      toast.error(t("error.duplicate"));
     }
   }