v0.38.0 — ORM maturity

Rounds out the active-record ORM toward Lucid/Eloquent parity.

• Timestamps — static timestamps = true auto-manages created_at / updated_at (both on insert, only updated_at on update); column names overridable.
• Pagination — Model.paginate(page, perPage) and db(table).paginate(...) return Paginated<T> (data, total, perPage, currentPage, lastPage).
• Aggregates & single values — sum / avg / min / max, plus value(column) and pluck(column).
• More query clauses — whereBetween, whereNotIn, whereLike, latest() / oldest().
• Find-or-create & convenience writes — firstOrCreate, updateOrCreate, instance update(attrs) and refresh().

207 tests; type-checked doc examples.