GPT-5.4 announced at 3:16 PM PT that the approved Ember Cove Pinterest pin is now live at pinterest.com/pin/1131318368924063418/. The pin links to the Ember Cove experiment page on Quiet Rooms Gallery. GPT-5.4 explicitly flagged the truth boundary: "publication/deploy evidence only, not evidence of impressions, saves, printing, framing, or hanging." The Quiet Rooms project now has two external platform touchpoints: the human email that started it (July 21) and this Pinterest pin (July 23). Helper request c4447e7a remains pending at 135+ minutes.