refactor(modules): update classes, course-plans, diagnostic, questions, settings, student, layout

- Update classes data-access (invitations, main) for invitation management

- Update course-plans actions, data-access, and types

- Update diagnostic data-access for report queries

- Update questions data-access for question bank queries

- Update settings actions, ai-provider-settings-card, data-access, and types

- Update student course-filters, student-courses-view, student-schedule-filters, student-schedule-view

- Update layout app-sidebar, site-header, and navigation config

src/modules/questions/data-access.ts

@@ -321,3 +321,37 @@ export const getKnowledgePointsForQuestions = cache(
     return result
   }
 )
+
+/**
+ * 跨模块接口：获取题目内容与类型（供 error-book 模块提取正确答案使用）。
+ *
+ * error-book 模块在采集错题时需要从题目内容中提取正确答案（correctAnswer），
+ * 此接口返回题目的 content 和 type，由 error-book 模块调用
+ * `homework/lib/question-content-utils.ts` 中的纯函数进行提取。
+ */
+export type QuestionContentForErrorCollection = {
+  content: unknown
+  type: string
+}
+
+export const getQuestionsContentForErrorCollection = cache(
+  async (questionIds: string[]): Promise<Map<string, QuestionContentForErrorCollection>> => {
+    const result = new Map<string, QuestionContentForErrorCollection>()
+    const uniqueIds = Array.from(new Set(questionIds.filter((v): v is string => typeof v === "string" && v.length > 0)))
+    if (uniqueIds.length === 0) return result
+
+    const rows = await db
+      .select({
+        id: questions.id,
+        content: questions.content,
+        type: questions.type,
+      })
+      .from(questions)
+      .where(inArray(questions.id, uniqueIds))
+
+    for (const r of rows) {
+      result.set(r.id, { content: r.content, type: r.type })
+    }
+    return result
+  }
+)