Drizzle

Composition metadata carrier — frontmatter is the product (see commands/apply/references/skill-metadata-schema.md). Body intentionally minimal. Do not delete: compose_stack hard-fails without this registration.

For full schema design + query patterns, see database-schema-designer. For T3-monorepo wrapping (turbo task, package layout), see t3-code-patterns § Database. For the migration-based-only policy (never db:push), see drizzle-best-practices § Migration Safety.