feat: squircle corners#1
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Layer continuous-curvature (squircle) corners on top of the existing border-radius on card/lane/button/panel/input surfaces via a `--corner: squircle` token and `corner-shape: var(--corner)`. corner-shape is Chromium-only as of mid-2026 (Safari/WebKit & Firefox ignore it and keep the plain border-radius arc), and it requires a non-zero radius to render — so this is pure progressive enhancement with zero visual regression. Pills (border-radius: 999px) and the full-screen 0-radius editor are deliberately left untouched. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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What
Layers continuous-curvature squircle corners on top of the existing
border-radiusacross marktile's finite-radius UI surfaces — lanes, cards, buttons, inputs, popups, the prompt/edit/archive modals, the lane chevron and the TOC drag ghost.Mechanism (mirrors the standard already shipped in
cver.net&liquidframe)::root { --corner: squircle; }token (a custom property is inherited, so this is the clean carrier).corner-shape: var(--corner);added next to each finiteborder-radiusrule.Zero regression
corner-shapeis Chromium-only as of mid-2026 — Safari/WebKit and Firefox ignore it and keep the plainborder-radiusarc. It also only renders when a non-zero radius is present. So this is pure progressive enhancement with zero visual regression.Pills (
border-radius: 999px) and the full-screenborder-radius: 0focus editor are deliberately left untouched.