feat(lesson-preparation): add readonly view, anchor node selector, and type guards

- Add lesson-plan-readonly-view for viewing published plans

- Add anchor-node-selector and textbook-segments for canvas anchor positioning

- Add i18n-errors and type-guards lib utilities

- Add lesson-plan-provider-setup for provider initialization

- Update actions, data-access (knowledge, versions, main), publish-service

- Update blocks (blackboard, exercise, homework, import, key-point, objective, reflection)

- Update editor, node-editor, node-edit-panel, pickers, and providers

src/modules/lesson-preparation/actions-publish.ts

@@ -9,6 +9,7 @@ import { Permissions } from "@/shared/types/permissions";
 import { handleActionError, safeParseDate } from "@/shared/lib/action-utils";
 import { publishLessonPlanHomework, PublishServiceError } from "./publish-service";
 import { publishLessonPlanHomeworkSchema } from "./schema";
+import { translateFieldErrors } from "./lib/i18n-errors";
 import type { ActionState } from "./types";
 
 export async function publishLessonPlanHomeworkAction(input: {
@@ -22,24 +23,32 @@ export async function publishLessonPlanHomeworkAction(input: {
   try {
     const parsed = publishLessonPlanHomeworkSchema.safeParse(input);
     if (!parsed.success) {
-      return { success: false, errors: parsed.error.flatten().fieldErrors };
+      const errors = await translateFieldErrors(parsed.error.flatten().fieldErrors);
+      return { success: false, errors };
     }
 
     const ctx = await requirePermission(
       Permissions.LESSON_PLAN_PUBLISH,
     );
     await requirePermission(Permissions.HOMEWORK_CREATE);
+    // V3 修复：作业标题/描述由 actions 层 i18n 翻译后传入，避免 service 层硬编码中文
+    const homeworkTitle = t("publish.homeworkTitle", { title: parsed.data.planId });
+    const homeworkDescription = t("publish.homeworkDescription");
+    const availableAtLabel = t("publish.availableAtLabel");
+    const dueAtLabel = t("publish.dueAtLabel");
     const result = await publishLessonPlanHomework({
       planId: parsed.data.planId,
       blockId: parsed.data.blockId,
       userId: ctx.userId,
       classIds: parsed.data.classIds,
       availableAt: parsed.data.availableAt
-        ? safeParseDate(parsed.data.availableAt, "可用时间")
+        ? safeParseDate(parsed.data.availableAt, availableAtLabel)
         : undefined,
       dueAt: parsed.data.dueAt
-        ? safeParseDate(parsed.data.dueAt, "截止时间")
+        ? safeParseDate(parsed.data.dueAt, dueAtLabel)
         : undefined,
+      homeworkTitle,
+      homeworkDescription,
     });
     revalidatePath("/teacher/lesson-plans");
     revalidatePath("/teacher/homework");
@@ -69,4 +78,5 @@ const PUBLISH_ERROR_KEY_MAP: Record<string, string> = {
   ALREADY_PUBLISHED: "publish.alreadyPublished",
   NO_SUBJECT_OR_GRADE: "publish.noSubjectOrGrade",
   NO_STUDENTS: "publish.noStudents",
+  INVALID_QUESTION_TYPE: "error.invalidQuestionType",
 };