Verified first: the embed hides Element Call's footer, so its in-call
settings sheet (which has the output picker) is unreachable from Lotus;
the cinny call bar had no output control.
Now a speaker button next to Deafen (desktop bar only; hidden where
setSinkId is unavailable — Firefox, Safari, Android Chrome) opens a menu
of enumerateDevices() audio outputs with the current one checked; picking
one sends io.lotus.set_audio_output to the fork (≥ 0.25.0-lotus.11),
which selects it, and the choice is re-sent with the rest of the sticky
fork state after an EC remount.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PPmy3tPq869XDW4njjVaKA
