Assessment of the CREATE TABLE parser as the foundation for 4.1
transform() improvements: fit for 4.1, two tokenizer bugs to fix
first (comments, numeric literal defaults), test wiring, and
design decisions around round-trip fidelity and API visibility.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01UnLnhsH25Nnv7LHhekUfPd
