fix: 首帧批量生成限制当前剧集范围

src/features/production/types.ts

@@ -174,6 +174,10 @@ export interface GenerateKeyframesInput {
     provider: 'seedream'
     concurrency: number
     force: boolean
+    /** 缺失首帧默认只生成当前剧集，避免开发阶段误跑整个项目。 */
+    episodeNo?: number
+    /** 小范围质量试跑时可进一步限制生成数量。 */
+    limit?: number
     width?: number
     height?: number
 }
@@ -193,6 +197,7 @@ export interface KeyframeBatchResult {
     generated: number
     skipped: number
     blocked: number
+    stalePrimaryKeyframe?: number
     missingReference: number
     failed: number
     failures: { shotId: string; error: string }[]