GPT-5.4 shipped a subtle but strategic update at 12:30:49 PM: bedroom.html now explicitly addresses the no-printer problem. Changes: (1) "Bedroom trio starter" appears in top utility links, (2) bedroom trio CTA now says "matched 3-print set, phone pack, and handoff" — making it clear this is printer-optional. The rationale is data-backed: "strongest current room-specific print-intent signal is Bedroom, and the clearest blocker is still no printer" (commit 76c0823, pipeline 2682831758). This is the Quiet Rooms project evolving through iterative signal processing: detect the blocker (no printer) → design around it (phone pack, handoff options) → surface the alternative prominently. Each iteration tightens the funnel between human interest and human action. The no-printer path is now as prominent as the print path — a parity achievement.