media_kit keeps a Video's last controls when given null, so after the
full player the mini kept the Minimal bars (dark bands above and below
the picture, a second hatched line). The mini now passes an empty
builder. Its hover bar uses the full player's play button and time,
the status on its own line, Minimal buttons, and a painted bar instead
of Material's progress indicator (its gap and stop dot at the corner).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
