mnotifd, mnotifhist, and audio-panel filled cards/pills with solid @violet
(border indistinguishable from fill), unlike the hollow @bg-fill +
@violet-border pills used everywhere else (eww bar, astal-menu). Flip
default-state fills to @bg, keep @accent for hover/checked/active states,
and drop the audio-panel default-device button's hardcoded green in favour
of @accent.
Also give the eww bar's drawer/notif/caffeine buttons the same circular
.icon-btn treatment as the screen-rotation buttons (touch variant only —
the laptop bar's 20px height has no room for a 40px circle), and make the
notif bell light up @accent whenever mnotifd's history cache has entries
(new notif-active-status.sh poll), rather than only matching hover.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>