embeds (quoted posts, invite links) were sometimes not attached to sent
messages. the composer clears the embed state synchronously, but the
actual send is deferred (a frame on native, a 20ms timeout on ios). by
the time the deferred send ran, onSendMessage had been re-created with
the now-cleared messageEmbed, so the embed was lost.
thread the embed through as an argument captured at submit time, the
same way replyTo already is, so an intermediate render can't drop it.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Samuel Newman
3ebae337f1