Authoritative .chord file format spec covering header fields, body syntax, chord symbol grammar, tokenization rules, and key normalization. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Add .gitignore (excludes .claude/, venv, checkpoints, processed data, external corpora), .gitattributes (LF normalization, binary markers), full directory tree with .gitkeep placeholders, and src __init__ stubs. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
H1K0