release-validate

Validates package release readiness across version consistency, cross-platform link integrity, npm package content, setup script smoke testing, skill fixture suite runs (Phase 4), shell portability static checks (Phase 5), cross-repo-style fixture coverage (Phase 6, shipped in v1.15.0), cross-AI-tool registration parity (Phase 7, shipped in v1.15.0), and release artifact generation (Phase 8). Use before running pnpm…