fix: 统一AI生成失败提示

core/frontend/src/App.tsx

@@ -19,6 +19,7 @@ import type {
   UserPreference
 } from "./types";
 import { publicModelDisplayName } from "./model-display";
+import { isPublicGenerationError, presentGenerationError } from "./generation-error";
 import { CornerMarks, Decorations, Sidebar, ToastLike } from "./components/app-shell";
 import {
   AccountPage,
@@ -73,6 +74,12 @@ const crumbLabels: Partial<Record<Page, string>> = {
    刷新后可恢复"生成中"占位并继续轮询(worker 在后台出图,任务永不丢)。 */
 const imgwbKey = (mode?: string) => `airshelf:imgwb:${mode || "image"}`;
 type ImgwbSaved = { pending?: string[]; results?: Asset[]; count?: number; ts?: number; productId?: string; productTitle?: string };
+
+function generationTaskErrorText(error: unknown, fallback: string): string {
+  if (!isPublicGenerationError(error)) return fallback;
+  const presentation = presentGenerationError(error);
+  return `${presentation.title}：${presentation.description}`;
+}
 function loadImgwb(mode?: string): ImgwbSaved | null {
   try {
     const raw = localStorage.getItem(imgwbKey(mode));
@@ -622,7 +629,7 @@ export function App() {
         if (!TERMINAL.has(t.status)) continue;
         pending.delete(t.id);
         if (t.status === "succeeded") assets.push(...(t.assets || []));
-        else if (t.error_message) lastErr = t.error_message;
+        else if (t.error_message) lastErr = generationTaskErrorText(t.error, t.error_message);
       }
       // 进度回写:保留还在跑的 id + 已出结果,供刷新后恢复
       saveImgwb(mode, { pending: [...pending], results: assets });
@@ -658,7 +665,7 @@ export function App() {
         if (!TERMINAL.has(t.status)) continue;
         pending.delete(t.id);
         if (t.status === "succeeded") assets.push(...(t.assets || []));
-        else if (t.error_message) error = t.error_message;
+        else if (t.error_message) error = generationTaskErrorText(t.error, t.error_message);
       }
     }
     return { assets, error };