Adds a Wear OS companion for sessions, transcripts, text and voice replies, realtime Talk, Gateway controls, notifications, settings, and a launch Tile.

Adds foreground, on-device Voice Wake with editable Gateway-synced wake words, plus copy and save-as-PNG actions for rendered chat widgets.

Fixes composer media leaking across chats and malformed agent or profile initials when display names begin with emoji.

Thanks @sibbl, @IWhatsskill, and @Leon-SK668.
