fix: stabilize match3d demo discovery

src/components/rpg-entry/rpgEntryWorldPresentation.test.ts

@@ -10,6 +10,7 @@ import {
   formatPlatformWorldTime,
   isBarkBattleGalleryEntry,
   isEdutainmentGalleryEntry,
+  isMatch3DGalleryEntry,
   isVisualNovelGalleryEntry,
   isWoodenFishGalleryEntry,
   mapBabyObjectMatchDraftToPlatformGalleryCard,
@@ -21,6 +22,7 @@ import {
   resolvePlatformPublicWorkCode,
   resolvePlatformWorldFallbackCoverImage,
 } from './rpgEntryWorldPresentation';
+import { buildMatch3DDemoGalleryCard } from '../../data/match3dDemoGalleryCard';
 
 test('formatPlatformWorldTime formats backend seconds timestamp text as date', () => {
   expect(formatPlatformWorldTime('1777110165.990127Z')).toBe('2026-04-25');
@@ -78,6 +80,24 @@ test('platform public cards use play type reference images as cover fallback', (
   );
 });
 
+test('builds local Match3D demo gallery card with generated runtime assets intact', () => {
+  const card = buildMatch3DDemoGalleryCard();
+
+  expect(isMatch3DGalleryEntry(card)).toBe(true);
+  expect(card.publicWorkCode).toBe('M3-20260525');
+  expect(resolvePlatformPublicWorkCode(card)).toBe('M3-20260525');
+  expect(card.coverImageSrc).toBe(
+    '/match3d-demo/undersea-candy-market/level-scene.png',
+  );
+  expect(card.generatedBackgroundAsset?.uiSpritesheetImageSrc).toBe(
+    '/match3d-demo/undersea-candy-market/ui-spritesheet.png',
+  );
+  expect(card.generatedBackgroundAsset?.containerImageSrc).toBeNull();
+  expect(card.generatedItemAssets?.[0]?.imageViews?.[0]?.imageSrc).toBe(
+    '/match3d-demo/undersea-candy-market/item-slices/item-01/view-01.png',
+  );
+});
+
 test('buildPuzzleWorkCoverSlides prefers each level formal image', () => {
   const slides = buildPuzzleWorkCoverSlides({
     workId: 'work-1',