feat: refine wooden fish runtime generation

src/services/miniGameDraftGenerationProgress.test.ts

@@ -356,7 +356,7 @@ describe('miniGameDraftGenerationProgress', () => {
     ]);
   });
 
-  test('wooden fish draft generation exposes hit object and sound pipeline', () => {
+  test('wooden fish draft generation exposes hit object, background and sound pipeline', () => {
     const state = createMiniGameDraftGenerationState('wooden-fish');
 
     const progress = buildMiniGameDraftGenerationProgress(
@@ -367,6 +367,7 @@ describe('miniGameDraftGenerationProgress', () => {
     expect(progress?.steps.map((step) => step.id)).toEqual([
       'wooden-fish-draft',
       'wooden-fish-hit-object',
+      'wooden-fish-background',
       'wooden-fish-hit-sound',
       'wooden-fish-write-draft',
     ]);