- Add _is_adjacent() to check if pitches differ by ±1 in one dimension
- Add _compute_dim_diff() to compute prime * direction for dimension changes
- Add _find_ref_and_dim_diff() to find the ref voice and dim_diff for changed pitches
- Update output_chords_to_music_data() to compute ref and dim_diff by comparing consecutive chords
- Update format_dim_diff() to include dim_diff == 0 check and fix ref mapping for 4 voices
- Compute both c1→c2 and c2→c1 edges independently using _find_valid_edges()
- Fix _is_directly_tunable to properly reorder c2_transposed using movement map
- Clean up unused valid_pairings code in _build_movement_maps
- Add edge_data field to PathStep for debugging
- Convert chord data to LilyPond parts and PDF
- Generate part files for voices I, II, III
- Generate full score from template
- Call LilyPond to create PDF automatically
- CLI with --name, --fundamental, --template options