fix: render prompt museum media

tests/e2e/image-workspace-conversations.spec.ts

@@ -1,6 +1,94 @@
 import { closeElectronApp, expect, getStableWindow, test } from './fixtures/electron';
 
 test.describe('AI Design workspace', () => {
+  test('keeps Prompt Museum cards usable when relative media fails', async ({ launchElectronApp }) => {
+    test.setTimeout(90_000);
+    const app = await launchElectronApp({
+      imageWorkspaceMode: 'local',
+      skipSetup: true,
+    });
+
+    try {
+      const page = await getStableWindow(app);
+      await expect(page.getByTestId('ai-module-selection-page')).toBeVisible();
+      await page.getByTestId('ai-module-option-painting').click();
+      const imageSidebar = page.getByTestId('sidebar-image-workspace');
+      await expect(imageSidebar.getByTestId('sidebar-open-image-prompt-museum')).toBeVisible();
+
+      await app.evaluate(({ ipcMain }) => {
+        const image = {
+          url: '/api/image-prompt-museum/e2e-entry/media/thumbnail',
+          width: 1200,
+          height: 900,
+          alt: 'E2E museum thumbnail',
+        };
+        const card = {
+          id: 'e2e-entry',
+          slug: 'e2e-entry',
+          title: '相对媒体 E2E',
+          summary: '验证图片失败不会阻断卡片。',
+          thumbnail: image,
+          categories: [],
+          model: { id: 'e2e-model', name: 'E2E Model' },
+          language: 'zh-CN',
+          attribution: {
+            author: { name: 'E2E 作者' },
+            source: { name: 'E2E 来源' },
+            license: { name: '测试许可', attributionText: 'E2E attribution' },
+          },
+          publishedAt: '2026-08-18T00:00:00.000Z',
+          updatedAt: '2026-08-18T00:00:00.000Z',
+        };
+        const respond = (json: unknown) => ({
+          ok: true,
+          data: { status: 200, ok: true, json },
+        });
+
+        ipcMain.removeHandler('hostapi:fetch');
+        ipcMain.handle('hostapi:fetch', async (_event, request: { path?: string }) => {
+          const path = request.path ?? '';
+          if (path === '/api/works/image-prompt-museum') {
+            return respond({
+              success: true,
+              data: {
+                items: [card],
+                facets: { useCases: [], styles: [], subjects: [] },
+                nextCursor: null,
+                total: 1,
+              },
+            });
+          }
+          if (path === '/api/works/image-prompt-museum/e2e-entry') {
+            return respond({
+              success: true,
+              data: {
+                ...card,
+                prompt: 'Create a resilient image card.',
+                variables: [],
+                images: [image],
+                requiresReferenceImages: false,
+              },
+            });
+          }
+          if (path === '/api/works/image-prompt-museum/e2e-entry/media/thumbnail') {
+            return respond({ mimeType: 'text/html', dataBase64: 'PGgxPnVuc2FmZTwvaDE+' });
+          }
+          return { ok: false, error: { message: `Unexpected E2E Host API request: ${path}` } };
+        });
+      });
+
+      await imageSidebar.getByTestId('sidebar-open-image-prompt-museum').click();
+      const cardButton = page.getByRole('button', { name: '查看 相对媒体 E2E' });
+      await expect(cardButton).toBeVisible();
+      await expect(page.getByLabel('E2E museum thumbnail加载失败')).toBeVisible();
+      await expect(cardButton).toBeEnabled();
+      await cardButton.click();
+      await expect(page.getByRole('button', { name: '关闭详情' })).toBeVisible();
+    } finally {
+      await closeElectronApp(app);
+    }
+  });
+
   test('keeps the conversation and generation task panes full height', async ({ launchElectronApp }) => {
     test.setTimeout(150_000);
     const app = await launchElectronApp({