feat: refine wooden fish runtime generation

src/services/miniGameDraftGenerationProgress.ts

@@ -66,6 +66,7 @@ export type MiniGameDraftGenerationPhase =
   | 'jump-hop-write-draft'
   | 'wooden-fish-draft'
   | 'wooden-fish-hit-object'
+  | 'wooden-fish-background'
   | 'wooden-fish-hit-sound'
   | 'wooden-fish-write-draft'
   | 'puzzle-images'
@@ -327,25 +328,31 @@ const WOODEN_FISH_STEPS = [
     id: 'wooden-fish-draft',
     label: '整理玩法草稿',
     detail: '保存作品信息、敲击物、音效和飘字配置。',
-    weight: 10,
+    weight: 8,
   },
   {
     id: 'wooden-fish-hit-object',
     label: '生成敲击物图案',
     detail: '使用 image2 生成最终运行态敲击物图案。',
-    weight: 48,
+    weight: 34,
+  },
+  {
+    id: 'wooden-fish-background',
+    label: '生成背景环境图',
+    detail: '使用 image2 生成敲击背景环境图。',
+    weight: 34,
   },
   {
     id: 'wooden-fish-hit-sound',
     label: '准备敲击音效',
     detail: '生成或写回短促敲击音效资产。',
-    weight: 30,
+    weight: 16,
   },
   {
     id: 'wooden-fish-write-draft',
     label: '写入正式草稿',
-    detail: '保存图案、音效、飘字和封面摘要。',
-    weight: 12,
+    detail: '保存图案、背景、音效、飘字和封面摘要。',
+    weight: 8,
   },
 ] as const satisfies ReadonlyArray<MiniGameStepDefinition>;
 
@@ -530,9 +537,12 @@ function resolveWoodenFishPhaseByElapsedMs(
   if (elapsedMs >= 270_000) {
     return 'wooden-fish-write-draft';
   }
-  if (elapsedMs >= 185_000) {
+  if (elapsedMs >= 240_000) {
     return 'wooden-fish-hit-sound';
   }
+  if (elapsedMs >= 120_000) {
+    return 'wooden-fish-background';
+  }
   if (elapsedMs >= 12_000) {
     return 'wooden-fish-hit-object';
   }