fix: game audio persistence and editor perf

- Keep game/campaign audio assets referenced (no prune)
- Flush pending project save on quit/switch/export to avoid losing campaignAudios
- Control: prevent game music restarts on scene changes; allow always-on controls; handle autoplay-after-scene-audio
- Editor: reduce ReactFlow churn with stable scene card map; lazy/async image decode
- Add contract/unit tests and update test script

Made-with: Cursor

app/main/project/assetPrune.test.ts

@@ -20,9 +20,10 @@ void test('collectReferencedAssetIds: превью, видео и аудио', (
         },
       },
     },
+    campaignAudios: [{ assetId: 'ca1' as AssetId, autoplay: true, loop: true }],
   } as unknown as Project;
   const s = collectReferencedAssetIds(p);
-  assert.deepEqual([...s].sort(), ['a1', 'pr', 'v1'].sort());
+  assert.deepEqual([...s].sort(), ['a1', 'ca1', 'pr', 'v1'].sort());
 });
 
 void test('reconcileAssetFiles: снимает осиротевшие assets и удаляет файлы', async () => {
@@ -62,11 +63,13 @@ void test('reconcileAssetFiles: снимает осиротевшие assets и
   const prev: Project = {
     ...base,
     scenes: {},
+    campaignAudios: [],
     assets: { orphan: asset } as Project['assets'],
   };
   const next: Project = {
     ...base,
     scenes: {},
+    campaignAudios: [],
     assets: { orphan: asset } as Project['assets'],
   };
 
@@ -111,7 +114,7 @@ void test('reconcileAssetFiles: удаляет файл при исключен
   } as unknown as Project;
 
   const prev: Project = { ...base, assets: { gone: asset } as Project['assets'] };
-  const next: Project = { ...base, assets: {} as Project['assets'] };
+  const next: Project = { ...base, campaignAudios: [], assets: {} as Project['assets'] };
 
   const out = await reconcileAssetFiles(prev, next, tmp);
   assert.deepEqual(out.assets, {});