Brief 1 of unify-glass-panel-surfaces convoy. Adds a `cornerLights`
prop to the <GlassSurface> primitive so corner catch-lights compose
into every consumer (<Modal>, <StatCard>, landing feature cards) by
default — no per-consumer migration needed.
API:
cornerLights: 'subtle' (default) | 'chrome' | 'none'
'subtle' → 4-layer background using --corner-light-warm-subtle /
--corner-light-cool-subtle (matches .glass-panel-strong
post-PR #118; appropriate for most data surfaces).
'chrome' → same recipe with the full-intensity
--corner-light-warm / --corner-light-cool tokens
(matches the Layout sidebar nav-chip and TopSearchBar
header treatments).
'none' → today's pre-Brief-1 behavior. Single-layer background:
var(--glass-surface-{tint}); no transparent border, no
corner radials. Escape hatch for GPU-budget-constrained
tiles that legitimately must skip the gradient-border
treatment.
Composition recipe (verbatim mirror of styles/globals.css's
.glass-panel-strong block post-PR #118):
linear-gradient(<fill>, <fill>) padding-box,
radial-gradient(at 0% 100%, <warm> 0%, transparent 42%) border-box,
radial-gradient(at 100% 0%, <cool> 0%, transparent 42%) border-box,
var(--chip-border-base) border-box
Paired with `border: 1px solid transparent` so the border-box
gradients render through the border. For cornerLights='none', the
border declaration is omitted entirely — preserves today's box-model
exactly.
Other props (`tint`, `blur`, `rim`, `elevation`, `as`, `style`,
`className`) and the `...style` LAST-wins merge order are unchanged.
Test additions (test/components/ui-primitives.test.js, +49 lines):
- cornerLights='subtle' (default): asserts --corner-light-*-subtle
tokens, padding-box/border-box layers, --chip-border-base, and
`border: 1px solid transparent` all present in the rendered
inline style attribute.
- cornerLights='chrome': asserts the full-intensity tokens
(NOT the -subtle variants); same border declaration.
- cornerLights='none': asserts single-layer
`background: var(--glass-surface-mid)`, no corner-light tokens,
no padding-box, no --chip-border-base, no border declaration.
Verification:
- npm run lint passes (1 pre-existing unrelated warning).
- npm run test:run: 116/116 tests pass (was 113; +3 GlassSurface
assertions).
Ripple effect (intentional, per architect plan):
<Modal>, <StatCard>, and the landing-page feature cards all
delegate to <GlassSurface>. Defaulting to cornerLights='subtle'
means each of them now renders with corner catch-lights without
any per-consumer edit. The visual-diff baseline refresh is the
expected side effect; queue on Linux per AGENTS.md § Testing
before Brief 3 + Brief 4 dispatch.
Acceptance criteria from
.convoys/unify-glass-panel-surfaces/brief-1-upgrade-glass-surface-primitive.md
all met. No consumer migrations in this PR.
Co-authored-by: Cursor <cursoragent@cursor.com>
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