fix(mobile): align practice position label

mobile-uni/src/pages/user/practice/index.vue

@@ -18,7 +18,7 @@
     <view v-if="loggedIn" class="panel scenario-card employee-card">
       <view class="scenario-headline">
         <text class="scenario-title">{{ activeScenarioName }}</text>
-        <text class="scenario-desc">生活顾问 · 业主服务场景</text>
+        <text class="scenario-desc">{{ positionLabel }} · 业主服务场景</text>
       </view>
       <view class="scenario-persona">
         <view class="persona-avatar">业</view>
@@ -263,7 +263,7 @@ import type {
   PracticeRecord
 } from '@/types/api';
 import { answerDailyDrill, finishPractice, getPracticeAssignments, getPracticeHistory, getPracticePrepCard, startPractice, submitPracticeSatisfaction, submitPracticeTurn } from '@/services/practice';
-import { isLoggedIn, rememberLoginRedirect } from '@/services/auth';
+import { getSelectedPosition, isLoggedIn, rememberLoginRedirect } from '@/services/auth';
 import { searchKnowledge } from '@/services/knowledge';
 import { resetPageScroll } from '@/services/navigation';
 import { ensureEmployeePosition } from '@/services/position';
@@ -299,6 +299,7 @@ const selectedScenarioId = ref(defaultScenarioId);
 const prepCard = ref<PracticePrepCard | null>(null);
 const prepLoading = ref(false);
 const activeScenarioName = ref(defaultScenarioName);
+const positionLabel = ref(getSelectedPosition() || '生活顾问');
 const helpLoading = ref(false);
 const helpAnswer = ref('');
 const helpRefs = ref<string[]>([]);
@@ -918,6 +919,7 @@ const handleShow = async () => {
   if (loggedIn.value && !(await ensureEmployeePosition('/pages/user/practice/index'))) {
     return;
   }
+  positionLabel.value = getSelectedPosition() || '生活顾问';
   void loadAssignments();
   void loadPrepCard();
 };