Plan step 38: the corner grid and the shape gallery move onto
<x-grid> and <x-stack>; each corner swatch is a data-md-showcase-
shape-swatch keyed on data-md-corner, one showcase.css rule per
corner token; <x-shape :size="80"> replaces the size-20 utility, its
fill the caller's style="color: var(--md-sys-color-secondary-
container)" since a shape's colour is inherited text colour, not a
class.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9