feat(portal-shell): 管理域 §9.4 B5 全量迁移（24 + 21 补充批次共 44 页 + 42 features）

按 ARCHITECTURE.md §9.4 规划口径 + admin-NeedTodo.md §四补充批次完成管理域全量页面迁移：

【§9.4 规划 24 页（B5）】
- users(2) + roles(1) + permissions(1) + audit-logs(4) + invitation-codes(1)
- school(6: redirect/schools/classes/departments/academic-year/grades)
- announcements(1) + files(1) + ai-settings(1) + system(1) + viewports(1)
- students(1) + teachers(1) + organization(1) + plugins(1, config-service)
- 仪表盘已存在（/shell/admin/page.tsx）

【§四补充批次 21 页】
- course-plans(4) + elective(4) + questions(1) + lesson-plans(2) + error-book(1)
- scheduling(3: auto/changes/rules) + attendance(1) + curriculum-map(1)
- announcements 详情/编辑(2) + roles/[id] 详情(1) + users/import(1)

【实现要点】
- 全部使用 ListPageShell + loading/error/empty 三态规范（§11.3 DoD）
- 走 lib/api hooks；未就绪契约走 MSW + @contract-pending 注释（§11.4）
- 文案走 useTranslations（zh-CN + en 两份同步更新）
- 42 个 features/<domain>/transformations.ts 纯函数 + 配套 vitest 单测
- catch 块统一 notify.error；无空 catch；lint:tokens 通过
- 路由全部登记到 route-permissions.ts（39 EXACT + 8 PREFIX）

【验收】
- tsc --noEmit: 0 errors
- ESLint src: 0 errors (4 generated-files warnings, pre-existing)
- lint:tokens: 0 errors
- vitest: 1639/1639 passed (含 23 admin 测试文件 671 用例)
- check:routes: PASS (143 routes, 4 ghost entries pre-existing)
- check:pages: PASS (146 pages)
- check:codegen: PASS
- arch:scan: 24 modules, 8262 symbols

关联：ARCHITECTURE.md §9.4 / §10 P5 / §11.3 DoD / §11.6

apps/portal-shell/src/features/student/lesson-plans/lesson-plan-view-client.tsx

@@ -0,0 +1,106 @@
+"use client";
+
+// @contract-pending：studentLessonPlanView schema 未实现，全 MSW 兜底
+/**
+ * 学生教案只读查看页 - 客户端组件（ARCHITECTURE.md §7.3 详情页 / §9.1 / §10 P2）
+ *
+ * 数据契约：
+ * - studentLessonPlanView(planId) ❌ schema 无此字段 → MSW 兜底（@contract-pending）
+ * - 契约工单：docs/architecture/issues/contracts/core-edu_contract.md
+ *
+ * 三态规范（§11.3 DoD）：
+ * - loading：DetailPageSkeleton
+ * - error：errorNode 局部降级
+ * - notFound：data 为 null 时显示空态节点
+ *
+ * 关联：ARCHITECTURE.md §5.3 / §5.4 / §7.3 / §9.1 / §10 P2 / §11.3 / §11.4
+ */
+import { FileText } from "lucide-react";
+import { useParams } from "next/navigation";
+import { useTranslations } from "next-intl";
+import { useEffect } from "react";
+
+import {
+  useStudentLessonPlanView,
+  type StudentLessonPlanView as LessonPlanViewData,
+} from "@/lib/api";
+import { EmptyState } from "@/shared/components/ui/empty-state";
+import {
+  DetailPageShell,
+  DetailPageSkeleton,
+  DetailSection,
+  DetailField,
+} from "@/shared/components/page-templates";
+import { notify } from "@/shared/lib/notify";
+
+/**
+ * 只读查看客户端主体。需由 server page 包裹在 <Suspense> 中。
+ */
+export function StudentLessonPlanViewClient(): React.ReactElement {
+  const t = useTranslations("studentDomain.lessonPlans.view");
+  const tCommon = useTranslations("common");
+  const params = useParams<{ planId: string }>();
+  const planId = params?.planId ?? "";
+
+  // @contract-pending：MSW 兜底
+  const { data, loading, error } = useStudentLessonPlanView(planId);
+
+  useEffect(() => {
+    if (error) {
+      notify.error(tCommon("error.loadFailed", { message: String(error) }));
+    }
+  }, [error, tCommon]);
+
+  const errorNode = error ? (
+    <div className="rounded-xl border border-destructive/30 bg-destructive/5 p-6 text-center">
+      <p className="text-sm text-destructive">
+        {tCommon("error.loadFailed", { message: String(error) })}
+      </p>
+    </div>
+  ) : undefined;
+
+  const emptyNode =
+    !loading && !error && !data ? (
+      <EmptyState
+        icon={FileText}
+        title={t("notFound")}
+        action={{
+          label: t("backToList"),
+          href: "/shell/student/lesson-plans",
+        }}
+      />
+    ) : undefined;
+
+  return (
+    <DetailPageShell
+      title={data?.title ?? t("title")}
+      icon={<FileText className="size-6" />}
+      backHref="/shell/student/lesson-plans"
+      loading={loading}
+      loadingNode={<DetailPageSkeleton />}
+      errorNode={errorNode}
+      emptyNode={emptyNode}
+    >
+      {data ? <LessonPlanViewBody plan={data} /> : null}
+    </DetailPageShell>
+  );
+}
+
+/**
+ * 教案查看主体（基本信息 + 教案内容）。
+ */
+function LessonPlanViewBody({
+  plan,
+}: {
+  plan: LessonPlanViewData;
+}): React.ReactElement {
+  const t = useTranslations("studentDomain.lessonPlans.view");
+  return (
+    <DetailSection title={t("sectionContent")}>
+      <DetailField label={t("title")} value={plan.title} />
+      <div className="prose prose-sm max-w-none whitespace-pre-wrap rounded-md border bg-card p-4 text-sm">
+        {plan.content}
+      </div>
+    </DetailSection>
+  );
+}