Adopt the Stitch google-labs-code/design.md format's two-layer shape:
YAML frontmatter carries machine-readable tokens, prose body covers the
six canonical sections. The sidecar DESIGN.json now extends frontmatter
rather than duplicating it.
- document.md: new frontmatter section, Step 2b staging, sidecar scoped
to extensions, Do's/Don'ts now cite PRODUCT.md anti-references by name,
OKLCH vs hex presented as project posture not mandate.
- design-parser.mjs: tiny YAML-subset reader, exposes model.frontmatter,
schemaVersion bumped to 2, prose-scraping fallback intact.
- live-browser.js: "basic view" CTA copy reflects frontmatter-first model.
- DESIGN.md: add frontmatter with 10 colors, 9 type roles, 7 components;
OKLCH values direct per The OKLCH-Only Rule.
- tests/design-parser.test.mjs: coverage for no-frontmatter, Stitch-shape,
missing-terminator, comment handling.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
