v0.9.0 — Radius hard-floor (4/6/8) + softer edge + card unification
Decision #100 — the 0px brutalist corner is retired.
- Radius hard floor
4 / 6 / 8— controls 4px, cards/SelectableCard 6px, Dialog 8px;rounded-fullreserved for round-by-design. - Softer
--edge— darkrgba(255,255,255,0.10), light translucentrgba(0,0,0,0.14)— one "foreground at low alpha" concept across modes. - Unified card family — Card, SelectableCard, and Dialog share
bg-surface+ 1pxborder-edge+ tier radius; Dialog gains the hairline.
~18 components swept rounded-none / rounded-[2px] → rounded-sm. No component-API changes.
PR #25.