Review All GDDs

This skill reads every system GDD simultaneously and performs two complementary reviews that cannot be done per-GDD in isolation:

1. Cross-GDD Consistency — contradictions, stale references, and ownership conflicts between documents
2. Game Design Holism — issues that only emerge when you see all systems together: dominant strategies, broken economies, cognitive overload, pillar drift, competing progression loops

This is distinct from /gamedev:design-review, which reviews one GDD for internal completeness. This skill reviews the relationships between all GDDs.

When to run:

• After all MVP-tier GDDs are individually approved
• After any GDD is significantly revised mid-production
• Before /gamedev:create-architecture begins (architecture built on inconsistent GDDs inherits those inconsistencies)