feat: add interactive MCQ and code-sort exercise widgets to tutorial lessons

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/admin/api.ts

@@ -6,6 +6,7 @@ import {
   BlankContest,
   BlankProblem,
   Contest,
+  Exercise,
   Server,
   TestcaseUploadedReturns,
   Tutorial,
@@ -261,6 +262,35 @@ export function setTutorialVisibility(id: number, is_public: boolean) {
   return http.put("admin/tutorial/visibility", { id, is_public })
 }
 
+export async function getAdminExercises(tutorialId: number) {
+  const res = await http.get("admin/exercise", { params: { tutorial_id: tutorialId } })
+  return res.data as Exercise[]
+}
+
+export async function createExercise(data: {
+  tutorial_id: number
+  type: "mcq" | "sort"
+  data: object
+  order: number
+}) {
+  const res = await http.post("admin/exercise", data)
+  return res.data as Exercise
+}
+
+export async function updateExercise(data: {
+  id: number
+  type: "mcq" | "sort"
+  data: object
+  order: number
+}) {
+  const res = await http.put("admin/exercise", data)
+  return res.data as Exercise
+}
+
+export function deleteExercise(id: number) {
+  return http.delete("admin/exercise", { params: { id } })
+}
+
 // 将竞赛题目转为公开题目
 export function makeProblemPublic(id: number, display_id: string) {
   return http.post("admin/contest_problem/make_public", {