design(premiere-plugin): align panel UI with web-ui design system
- Add motion tokens (ease-out-quart/expo, dur-fast/normal/slide)
- Add z-layer tokens, overlay, thumb-black, accent-hover/bright
- Restructure signal/status tokens; flip to signal-primary/status-alias pattern
- Add signal-info/info-bg for --status-blue backwards compat
- Buttons: md=32px, sm=28px, lg=36px, icon=28sq, font 500/13px
- Inputs/select: 32px tall, bg-deep background, focus-visible outline
- Slide panel: 460px wide, 52px header, 18px padding, ease-out-expo, min-height:0
- Asset card: intrinsic height, thumb-black thumbnail, border-faint, brightness hover
- Status badges: 18px, font-sans, 0.08em tracking
- Chips: 18px, font-sans, no border, signal-bg backgrounds
- Tabs: 36px, no text-transform, pill badge
- Action bar: bg-deep background
ZGaetano
33239a780e