// Integration tests for DynamoDB operations.
// Gated on the "integration" feature — requires Docker for DynamoDB Local.
//
// The four scenario modules each exercise a distinct end-to-end workflow:
// - crud_lifecycle : full CRUD lifecycle with every builder variant
// - query_and_scan : query/scan over a realistic multi-type dataset
// - batch_and_pagination: batch writes, auto-pagination, and streaming
// - transactions : atomic transactions, rollback, and swap