Independent re-derivation from the workbook and GLB vertex colours: 42/42 rows, 735/735 stations decoded to the workbook pattern, no mismatches. Boundary blend colours (39) noted as a limitation. V14 remains partial (lining report self-checked). Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01A5Cun3RHQKna9qxE6ybZ4A