No pattern-to-station data exists in the drawings. Per user decision (2026-10-21) the modelled range 4+745..5+480 is split into 2 m segments with arbitrary pattern names, marked placeholder in CSV, meta and viewer, to be replaced later. Ring step reduced to 1 m so that the 2 m segments align. Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01A5Cun3RHQKna9qxE6ybZ4A