Add Research doc: pointer to all 7 agentskillsio entries so the new
validate-provenance.sh upstream checks can resolve the research source.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Records the upstream agentskills.io sources that informed skill-audit,
continuing the research → docs → skill provenance chain.
- New references/sources.md with 7 extracted sources attributed to skill files;
agentskills-llms-txt demoted to discovery-only comment per skill-author precedent
- source_keys frontmatter added to SKILL.md (5 slugs), references/body-discipline.md
(agentskills-spec, agentskills-best-practices), and references/description-quality.md
(agentskills-spec, agentskills-optimizing-descriptions)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
