Porting Test Drive II from SNES to PC, Part 10: Closing the 1014..1021 ownership block

Porting Test Drive II from SNES to PC, Part 10: Closing the 1014..1021 ownership block The previous checkpoint closed the direct bridge-extracted 1006..1013 block with live ownership evidence. That left the next step unchanged: push the same proof surface one block later and see whether the late 01:9FE5 path is still stable when the window reaches frame 1021. This checkpoint does that. Why 1021 mattered 1021 is the end of the next direct bridge-extracted block: 1014..1021 By this point the repo already had a strong bridge-visible story for the block, but that is still weaker than a producer-trace-backed contract. The questions were: does the block still close under the same callback family? do the producer domains stay the same again? does the write pattern change even if the visible overlay stops growing? Those are the questions worth answering if the goal is to replace sampled attract slices with native state playback instead of just collecting screenshots. The checkpoint The workflo