diff --git a/admin-frontend-vue/src/stores/admin-session.ts b/admin-frontend-vue/src/stores/admin-session.ts
index f326fc50..6aadd783 100644
--- a/admin-frontend-vue/src/stores/admin-session.ts
+++ b/admin-frontend-vue/src/stores/admin-session.ts
@@ -1,6 +1,7 @@
 import { defineStore } from 'pinia'
 import { fetchAdminMenuTree, fetchCurrentUser, logout } from '@/api/session'
 import type { AdminMenuNode, AdminUser } from '@/types/admin'
+import { isSuperAdminRole } from '@/types/admin'
 import { firstVisiblePath } from '@/router/helpers'
 
 export const useAdminSessionStore = defineStore('admin-session', {
@@ -12,7 +13,7 @@ export const useAdminSessionStore = defineStore('admin-session', {
     error: '',
   }),
   getters: {
-    isSuperAdmin: (state) => state.user?.role === 'super_admin',
+    isSuperAdmin: (state) => isSuperAdminRole(state.user?.role),
     firstVisible: (state): string => {
       return firstVisiblePath(state.menuTree)
     },
diff --git a/admin-frontend-vue/tests/task-31.test.ts b/admin-frontend-vue/tests/task-31.test.ts
new file mode 100644
index 00000000..48924460
--- /dev/null
+++ b/admin-frontend-vue/tests/task-31.test.ts
@@ -0,0 +1,57 @@
+import test from 'node:test'
+import assert from 'node:assert/strict'
+import { readSource } from './helpers.ts'
+import { isSuperAdminRole, isSuperUser } from '../src/types/admin.ts'
+
+test('test_task_031_super_admin_judge_normal_primary_path', () => {
+  // 正常主路径：super_admin 角色判定为超级管理员，可进全部菜单。
+  assert.equal(isSuperAdminRole('super_admin'), true)
+  assert.equal(isSuperUser({ role: 'super_admin' }), true)
+})
+
+test('test_task_031_super_admin_judge_normal_variant_input', () => {
+  // 正常变体：admin/normal 不是超级管理员。
+  assert.equal(isSuperAdminRole('admin'), false)
+  assert.equal(isSuperAdminRole('normal'), false)
+})
+
+test('test_task_031_super_admin_judge_normal_repeated_operation_is_idempotent', () => {
+  // 正常重复：大小写/空白差异归一后判定稳定。
+  assert.equal(isSuperAdminRole('SUPER_ADMIN'), isSuperAdminRole('super_admin'))
+  assert.equal(isSuperAdminRole('  Super_Admin  '), true)
+})
+
+test('test_task_031_super_admin_judge_boundary_empty_input', () => {
+  // 边界空值：空/null 角色不判为超级管理员，也不抛错。
+  assert.equal(isSuperAdminRole(''), false)
+  assert.equal(isSuperAdminRole(undefined), false)
+  assert.equal(isSuperAdminRole(null), false)
+})
+
+test('test_task_031_super_admin_judge_boundary_single_item', () => {
+  // 边界单元素：单个 super_admin 用户被 store getter 识别。
+  const store = readSource('src/stores/admin-session.ts')
+  assert.match(store, /isSuperAdmin\s*:/, 'store 提供 isSuperAdmin getter')
+  assert.match(store, /isSuperAdminRole/, 'getter 复用角色归一判定')
+})
+
+test('test_task_031_super_admin_judge_boundary_limit_or_missing_field', () => {
+  // 边界上限/缺字段：未知角色串不误判超级管理员。
+  assert.equal(isSuperAdminRole('owner'), false)
+  assert.equal(isSuperAdminRole('xxx'), false)
+})
+
+test('test_task_031_super_admin_judge_invalid_input_rejected', () => {
+  // 异常输入：store getter 不应再用未归一化的原始等值比较。
+  const store = readSource('src/stores/admin-session.ts')
+  assert.equal(store.includes("role === 'super_admin'"), false, '不允许裸等值判定，需走角色归一')
+})
+
+test('test_task_031_super_admin_judge_dependency_failure_returns_actionable_message', () => {
+  // 依赖失败：类型契约模块提供角色判定，供 store 与守卫复用。
+  const source = readSource('src/stores/admin-session.ts')
+  assert.match(source, /isSuperAdminRole/)
+  const adminTypes = readSource('src/types/admin.ts')
+  assert.match(adminTypes, /isSuperAdminRole/)
+  assert.match(adminTypes, /roleKind\(/)
+})