Agent Skills: uuid-primary-keys

Expert guidance for implementing UUID primary keys in Rails applications. Use when setting up UUIDs as primary keys, choosing between UUIDv4 and UUIDv7, configuring generators for UUID defaults, writing migrations with id colon uuid, adding UUID foreign keys, implementing base36 encoding for URL-friendly IDs, configuring PostgreSQL pgcrypto or gen_random_uuid, implementing SQLite binary UUID storage, choosing a primary key type, using non-sequential IDs, secure IDs, random IDs, or any ID generation strategy beyond auto-increment integers.