Drives an image inline into the Claude conversation log over the same
bus-publish path as ui.toast/ui.open, keeping the dispatcher handler
Flutter-free. The card is display-only per D-78; the verb registers a
CommandSchema so it surfaces in clide capabilities for T-248 discovery.
Closes T-249.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>