The `media-use` SKILL.md `description:` was an unquoted YAML scalar containing
a mid-value `: ` (`...the full cascade: project cache...`). YAML 1.2 reads
that as a nested mapping and the parse fails with "Nested mappings are not
allowed in compact mappings". `skills add` aborts the entire install when any
one skill fails to parse, so this single file blocked installing all 19
skills for everyone following the README's `npx skills add heygen-com/hyperframes`.
- Replace the offending `: ` with ` — ` (keeps the plain-scalar style used by
the other 18 skills; the description already uses `—` as a separator).
- Add a frontmatter guard to scripts/lint-skills.ts that flags unquoted
top-level scalars containing `: ` — the exact ambiguity — so this can't
regress. No new dependency.
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
- Replace hardcoded template list in build:copy with `cp -r src/templates/*`
so new templates are included automatically (kinetic-type, decision-tree,
product-promo, nyt-graph were missing from published package)
- Fix captions SKILL.md: reword `!` and `>` in inline backticks that
triggered Claude Code's bash permission checker
- Add scripts/lint-skills.ts to catch shell-unsafe patterns in SKILL.md
files (runs as part of `bun run lint` in CI)
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
