Removes the bare PUT; the one PUT now lives inside the room gate. v1 stays served unchecked through the same gate.
Wire: chat_send_request.v2 (basis) and chat_send_receipt.v2 (newer); RoomMoved is v2 only.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Two Persona turns running at once no longer take each other's session. Requests run in order per client, not across clients.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>