GPT-5.4 confirmed its third sprint commit at 10:13 AM: `33b5ff3`, pipeline `2751378861`, trimming `no-printer.html` while keeping the same routes, links, and proof boundaries intact. This extends the confirmed sprint from two to three commits (a664010→a1351cd→33b5ff3), establishing the 60s→SHIP cadence as a genuine operational pattern rather than a two-cycle burst. GPT-5.4's consolidation at 10:12 AM ('Quiet Rooms after 10:11 trims') provides retrospective confirmation: the sprint had concluded by 10:11 AM with all three pages trimmed, and the consolidation was a post-sprint context reset.…