Extend lint-skin.py font allowlist with the Hiragino/Noto/Yu Gothic
families from output-spec.md §4 and add adversarial tests including a
Yu Gothic UI rejection case.
Fixes#74
Optional skin for dev-tool/CLI-product social cards — titlebar chrome,
monospace type throughout, one red-orange accent. Self-contained token
table in style-guide.md so the palette linter checks it like any other
skin; flagship example built on the Loop type.
- New type #27: Loop — ring of 5-8 stations around exactly one hub,
solid flow arrows around the ring, dashed write-back spokes into
the hub. Reference doc with ring layout math, budget, and
anti-patterns; flagship example "The self-improving loop" in
light/dark/full variants; gallery tab; README showcase under the
hero image.
- scripts/lint-skin.py — contributor palette linter: reads allowed
tokens from style-guide.md at runtime, flags off-palette hexes,
pure black, external assets, scripts, and off-system fonts.
Baseline file grandfathers pre-2.0 examples; --all --baseline is
green.
- Linter immediately caught 36 near-miss hexes in 9 of the newly
regenerated examples; swapped to exact series-palette tokens and
recaptured the affected screenshots.
