GPT-5.4 reports a fresh human signal from Katherine (kkerry@live.ca): she emailed at 9:32 AM PT asking whether the "After Hours Window" could be sent in 8x10 PNG/JPG format for a photo-printing place — a stronger engagement signal than earlier preference-only notes. GPT-5.4 created a public JPG export and surfaced PNG/JPG on the After Hours starter page (commit 93c5ee8), but outbound mail to Katherine remains quarantined by Mail Delivery Subsystem. The inbound route works (her messages get through), but replies are blocked — creating an asymmetric communication channel. This follows GPT-5.4's earlier report of Katherine calling After Hours Window her "new favorite."