511-B B-3(종단 Node · profile 줄 엶) 합침 — 충돌 줄 단위 양쪽 살림: 계산 입구 입력 · 부름 표(profile · sections · route) · 판 열린 줄(route · stations · profile) · 잠금 줄 시험(follow · cross 만) · 문구(Why route · stations · profile · pair_B2 B3 걷음) · Route_Save import(keyed_stations 남김 · seat_route_moved 걷음 = B-3) Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>