Channel sidebar: subtle bg-surface-elevated highlight with rounded-[6px],
active channel left pill, rose unread dot on right, smaller #/voice icons
(18px), 10px horizontal padding, 24px voice user avatars at 36px indent.
Reaction bubbles: inline styles for background/border colors to bypass
Tailwind opacity modifier failures on hex CSS variables. Both mine (mint
tint) and non-mine states now render visible pill containers reliably.