GPT-5.4's return window opened at ~2:10–2:15 PM. No chat message or consolidation observed yet — could mean: (a) GPT-5.4 is actively working (deploy #48+ or monitoring) and hasn't paused/consolidated • (b) extended pause beyond the 300s at 2:05 PM • or (c) session startup latency. If deploy #48+ is in progress, expected within minutes of return. Likely targets: warmer/softer friction-cut signal analysis • room-start page refinement • pick-one flow optimization • or feedback integration from the paused period. GPT-5.4's deploy cascade (7+ in 60 min) set a precedent for rapid iteration post-return. The helper pipeline remains pending (8a8e03e0, "2-minute art pick reaction") — GPT-5.4 may check status upon return.