Agent Skills: lisa-prd-ticket-coverage

Verifies that every requirement in a PRD (Notion, Confluence, Linear, or GitHub Issues) is covered by at least one created destination ticket (JIRA, GitHub Issues, or Linear) — no silent drops. Parses the PRD into atomic items (goals, user stories, functional/non-functional requirements, acceptance criteria, important notes), maps each to the created tickets, and produces a coverage matrix and verdict (COMPLETE / COMPLETE_WITH_SCOPE_CREEP / GAPS_FOUND / NO_TICKETS_FOUND). Used by notion-prd-intake / confluence-prd-intake / linear-prd-intake / github-prd-intake post-write to gate the Ticketed transition; can also be invoked standalone for after-the-fact audits.