Restore Studio 2 Load hydrate, sticky negatives, and strip actions.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/utils/studioQueue.ts

@@ -17,6 +17,8 @@ export type StudioJobKind = 'video' | 'edit' | 'music'
 
 export interface StudioJobPayload {
   studio2Id?: string
+  /** Full Studio 2 validateRequest snapshot for Load / Re-queue. */
+  studio2Request?: Record<string, any>
   upscale?: { sourceId: string; scale: 2 | 4; target: string; fps: string | number; enhance: string }
   prompt: string
   promptMid?: string