Restores the four features SHL0MS built on #84329 that an earlier pass on
this branch had carved out, reconciled onto the shared translucency state
rather than the four-atom store they were written against.
- Frost picker. macOS exposes no blur-radius knob, so the vibrancy material
IS the frost control. The four in the ladder come from a pixel census on
macOS 26: the 14 Electron materials collapse to 9 distinct looks, and
these four are the widest separations that stay distinct in BOTH
appearances. sidebar/hud collapse into under-window when unfocused, which
is why they're deliberately absent -- normalizeMaterial rejects them, with
a test saying why.
- Sidebar-only glass, the Finder shape. <body> stays the single painter and
splits at the rail's live-measured edge with a hard gradient stop, so
there's no smear across the seam and no per-layer tint stacking. RTL
mirrors.
- Full-range tint. glassSurfaceKeep runs linear to zero, so the top of the
lever is bare untinted blur instead of stopping at a 30% wash. Text, cards
and the composer keep their own opaque tokens, which is what makes 100%
usable rather than unreadable.
- Peek. The settings overlay covers the very effect its slider controls, so
holding the slider ghosts the whole overlay layer and the live window
becomes the preview. A counter, not a boolean: a held drag and a timed
pulse from a picker click overlap, and the drag must not be cancelled by a
pulse expiring underneath it.
One change from the original: the peek's transition is scoped with :has() to
the overlay that arms it. The version on #84329 shipped a bare
`[data-overlay-surface] { transition: opacity 420ms }`, which gave every
overlay in the app -- command center, cron, agents, model picker -- a 420ms
opacity transition for the life of the process to serve one slider. Verified
by running the candidate rules through lightningcss: the scoped selectors
survive minification and no un-gated overlay transition remains.
visualEffectState is pinned to 'active' at each chat window, because several
materials collapse to a shared inactive look on blur -- without it the frost
choice silently erases itself whenever the user clicks another app.
Co-authored-by: SHL0MS <SHL0MS@users.noreply.github.com>
Brooklyn Nicholson
efa15b5eb4