Table DSL and typed registry guide for `@xylex-group/athena`. Use when implementing or debugging `table(...).schema(...).columns(...).primaryKey(...)`, `defineModel` compatibility, `defineSchema` or `defineDatabase` or `defineRegistry`, `createTypedClient`, `fromModel(...)`, tenant context mapping, model-derived form helpers, or consumer code that should derive directly from generated `athena/models/*` contracts. Use when the user runs /athena-js-typed-schema-registry.
