List contingency schedule changes
The operator-recorded contingency schedule changes, keyset-paged newest announced first. Each row is an out-of-band-received Núclea announcement (OP002 §14 = telephone/e-mail) recorded verbatim by an operator; the câmara’s own wire grids are read at listScheduleGrids, and nothing here computes a schedule. Read-only — the feed is projected, never mutated through this surface.
GET
List contingency schedule changes

