fix(mobile): unify empty/loading states on question board and points pages

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

@@ -33,7 +33,7 @@
           </text>
         </view>
       </view>
-      <text v-else class="muted empty">暂无积分明细</text>
+      <StateBlock v-else type="empty" :card="false" title="暂无积分明细" />
     </view>
   </view>
 </template>
@@ -43,6 +43,7 @@ import { ref } from 'vue';
 import { onShow } from '@dcloudio/uni-app';
 import type { IncentiveBalance, IncentiveLedgerItem } from '@/types/api';
 import { getMyIncentiveBalances, getMyIncentiveLedger } from '@/services/questions';
+import StateBlock from '@/components/StateBlock.vue';
 
 const balances = ref<IncentiveBalance[]>([]);
 const ledger = ref<IncentiveLedgerItem[]>([]);

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

@@ -37,11 +37,8 @@
     </view>
 
     <view v-if="message" class="status-message">{{ message }}</view>
-    <view v-if="loading" class="panel employee-card empty">问题加载中…</view>
-    <view v-else-if="!questions.length" class="panel employee-card empty">
-      <text class="empty-title">当前暂无问题</text>
-      <text class="muted">你可以发起第一条真实工作求助。</text>
-    </view>
+    <StateBlock v-if="loading" type="loading" title="问题加载中…" />
+    <StateBlock v-else-if="!questions.length" type="empty" title="当前暂无问题" desc="你可以发起第一条真实工作求助。" />
     <view v-else class="question-list">
       <button v-for="item in questions" :key="item.id" class="question-card employee-card" @click="openQuestion(item.id)">
         <view class="question-meta">
@@ -66,6 +63,7 @@ import type { QuestionBoardItem, QuestionBoardTab } from '@/types/api';
 import { isLoggedIn, rememberLoginRedirect } from '@/services/auth';
 import { listQuestions } from '@/services/questions';
 import { resetPageScroll } from '@/services/navigation';
+import StateBlock from '@/components/StateBlock.vue';
 
 const path = '/pages/user/questions/index';
 const tabs: { key: QuestionBoardTab; label: string }[] = [