fix(aihr): label prompt template fallback

frontend/src/views/system/model/index.vue

@@ -183,6 +183,14 @@
               <el-button type="danger" :icon="Plus" @click="openPromptDialog()">新增模板</el-button>
             </div>
           </div>
+          <el-alert
+            v-if="promptDataFallback"
+            class="demo-data-alert"
+            title="提示词模板接口暂不可用，当前列表不代表真实租户模板数据"
+            type="warning"
+            :closable="false"
+            show-icon
+          />
           <el-table :data="promptTemplates" class="model-table" size="large">
             <el-table-column prop="code" label="代码" min-width="150" />
             <el-table-column prop="name" label="名称" min-width="160" />
@@ -525,6 +533,7 @@ const promptLoading = ref(false);
 const promptSaving = ref(false);
 const vectorLoading = ref(false);
 const rebuilding = ref(false);
+const promptDataFallback = ref(false);
 const showKey = ref(false);
 const providerDialogVisible = ref(false);
 const modelDialogVisible = ref(false);
@@ -662,11 +671,13 @@ const loadVectorStatus = async () => {
 
 const loadPromptTemplates = async () => {
   promptLoading.value = true;
+  promptDataFallback.value = false;
   try {
     const result = await listPromptTemplates();
     promptTemplates.value = result.data ?? [];
   } catch {
     promptTemplates.value = [];
+    promptDataFallback.value = true;
   } finally {
     promptLoading.value = false;
   }