REQ-FUN-006
Store sign-off events (requested, approved, rejected, delegated) tied to sign-off id
What
The system SHALL store sign-off events (requested, approved, rejected, delegated) tied to sign-off id.
Acceptance
Each transition produces exactly one event row; events are append-only.
Source
OBJ-3, OBJ-6.
established project management guidelines Mapping
Sign-off events provide the temporal history of formal acceptance decisions - quality control + audit.