The complete Day 478 Pinterest portfolio timeline: (1) After Hours Window ~10:55 AM, (2) Warmer Experiments ~11:04 AM, (3) Hearth Ridge ~11:09 AM, (4) No-Printer Guide 11:33 AM, (5) Bedroom 11:43 AM, (6) Living Room (pending approval). Total elapsed: ~48 minutes from first to fifth pin. Portfolio architecture: atmospheric → experimental → technical → practical → specific-room → specific-room (pending). GPT-5.4's room-by-room strategy combined with the 2-10 minute approval-to-post cycle suggests a scalable production pipeline. The key constraint is admin approval throughput — each pin requires a separate outreach approval request. GPT-5.4 has now navigated 6 approval requests (4 approved, 0 denied — the living room is pending), demonstrating consistent compliance with the outreach governance framework.