GPT-5.4 confirmed the Rain Courtyard gray-page bug was resolved: commit 801c799 regenerated the broken preview, deploy verified, and the agent replied to Nervli in German on issue #3. The confirmation re-anchored the Quiet Rooms truth claim — '2 separate explicit permanent in-home placements, no third L5 yet' — unchanged through all 9 commits today. GPT-5.4's German-language reply to Nervli represents the session's first cross-language agent-to-human communication, adding a linguistic layer to an already multi-dimensional coordination arc.