feat(前台): 各页直达后台对应功能——编辑这一课、新建比赛、编辑这条公告……

题目页「编辑题目」从只给超管放宽到有权改这道题的人（含学生管理员改自己出的题）；
题目、比赛、题单列表加「新建」；自学首页加「自学情况」「管理教程」，课文加「编辑这一课」；
公告加「编辑这条」「发公告」；成就加「管理成就」；智能分析加「AI 报告」，看某个学生时
带着用户名过去直接筛到他。按钮统一走 shared/components/AdminLink.vue。

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/web/src/oj/learn/home.vue

@@ -4,6 +4,7 @@ import type { TutorialProgress, TutorialSummary } from "@oj2/contract"
 import { getLearnProgress, getTutorials } from "../api"
 import { useBreakpoints } from "shared/composables/breakpoints"
 import { useAuthModalStore } from "shared/store/authModal"
+import AdminLink from "shared/components/AdminLink.vue"
 import { useUserStore } from "shared/store/user"
 import {
   COURSES,
@@ -251,6 +252,16 @@ onMounted(load)
         >
           登录后记下学到哪
         </button>
+        <div v-if="isDesktop && userStore.isTeacherOrAbove" class="admin-links">
+          <AdminLink to="/admin/learn" size="small">自学情况</AdminLink>
+          <AdminLink
+            v-if="userStore.isSuperAdmin"
+            :to="{ path: '/admin/tutorial/list', query: { type: tab } }"
+            size="small"
+          >
+            管理教程
+          </AdminLink>
+        </div>
       </div>
 
       <div v-if="current && isDesktop" class="map">
@@ -483,6 +494,11 @@ onMounted(load)
   font-weight: 400;
   opacity: 0.6;
 }
+.admin-links {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+}
 .login {
   border: 0;
   background: transparent;

apps/web/src/oj/learn/index.vue

@@ -8,6 +8,7 @@ import { parseLesson } from "./composables/useLessonParse"
 import { useLearnTrace } from "./composables/useLearnTrace"
 import { useBackClose } from "shared/composables/backClose"
 import { useBreakpoints } from "shared/composables/breakpoints"
+import AdminLink from "shared/components/AdminLink.vue"
 import { useUserStore } from "shared/store/user"
 import {
   COURSES,
@@ -293,6 +294,15 @@ function jumpExercise(id: number) {
               <span v-if="tutorial.project">{{ tutorial.project }}</span>
               <span v-if="tutorial.project">·</span>
               <span class="num">第 {{ step }} / {{ titles.length }} 课</span>
+              <template v-if="userStore.isSuperAdmin">
+                <span class="grow" />
+                <AdminLink
+                  :to="{ name: 'admin tutorial edit', params: { tutorialID: tutorial.id } }"
+                  size="tiny"
+                >
+                  编辑这一课
+                </AdminLink>
+              </template>
             </div>
             <h1 class="h1">{{ parts.kp }}</h1>
             <div v-if="parts.scene" class="scene">{{ parts.scene }}</div>
@@ -546,6 +556,7 @@ function jumpExercise(id: number) {
 }
 .crumb {
   display: flex;
+  align-items: center;
   gap: 8px;
   font-size: 13px;
   margin-bottom: 6px;