NOTESPATIAL-COMPOSITION.md reads the movement subtitles as what they already are — spatial verbs (enter, answer, turn, scatter, converge, rest) — and models the live form: each movement a holdable region looping 2–6 passes with re-seated sound, fermatas at the doors while machines re-seat, the score's own level arc as the macro shape. The piece grows the mechanic: hold captures the current movement and loops it at its far door (space toggles, enter jumps to the next door, state file carries both for the conductor), so the length of a night is a performance decision. Claude-Session: https://claude.ai/code/session_01Xju7GpzP6o2JwxtqfKqFiG