fix(frontend): clarify model fallback messages

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

@@ -629,7 +629,7 @@ const loadData = async (preferredProviderCode = selectedProviderCode.value) => {
     providers.value = seedProviders;
     modelRows.value = seedModels;
     selectedProviderCode.value = preferredProviderCode || 'deepseek';
-    ElMessage.warning('模型配置 API 不可用，已展示本地 seed 原型数据');
+    ElMessage.warning('模型配置 API 不可用，已展示内置默认清单');
   } finally {
     loading.value = false;
   }
@@ -694,7 +694,7 @@ const runConnectionTest = async () => {
     if (result.data?.configured) {
       ElMessage.success(`连接成功：${result.data.modelName}`);
     } else {
-      ElMessage.warning('后端返回 seed fallback，请先在数据库配置供应商 URL 和 Key');
+      ElMessage.warning('当前模型未完成真实调用配置，请检查供应商 URL、Key 和模型名');
     }
   } catch {
     ElMessage.warning('模型测试接口不可用，当前仅展示页面原型数据');
@@ -759,7 +759,7 @@ const submitProvider = async () => {
 const toggleProviderStatus = async (enabled: boolean) => {
   const provider = activeProvider.value;
   if (provider.id < 0) {
-    ElMessage.warning('seed 供应商请先保存后再启停');
+    ElMessage.warning('内置供应商请先保存后再启停');
     openProviderDialog(provider);
     return;
   }
@@ -833,7 +833,7 @@ const submitModel = async () => {
 const toggleModelEnabled = async (row: ModelConfig, enabled: boolean) => {
   if (row.id < 0) {
     row.enabled = !enabled;
-    ElMessage.warning('seed 模型请先保存后再启停');
+    ElMessage.warning('内置模型请先保存后再启停');
     openModelDialog(row);
     return;
   }