product-analyze

What this skill does

Performs read-only product consistency analysis:

1. PDR Quality — completeness, clarity, standards compliance
2. PDR→PRD Drift — decisions not reflected in PRD
3. PRD→PDR Drift — PRD elements without supporting PDRs
4. Cross-PDR Consistency — conflicts between PDRs
5. Staleness — outdated references, placeholders, deprecated PDRs still referenced
6. Mermaid Syntax — invalid diagram blocks flagged with location + suggested patch (the mermaid detection pass)

Output: Structured markdown analysis report (no files modified)

When to use