Area 6 Bugged--Level stuck in place, no enemies spawning, music cuts off

Game is stuck on Area 6, whether playing normally or via debug level skips. Arwing moves normally but level-scrolling is stuck with no enemies spawning and the music is cut off. Can't progress after this normally.

Reproduce the issue in Area 6 both during normal play and with debug level skips, checking when scrolling stops and enemies and music disappear. Trace the Area 6 progression, spawning, and music-handling entry points from that reproduction; done means the level scrolls, enemies spawn, music continues, and progression completes normally.

Written by the indexing model from the issue text.