REQ-FUN-040
REST API described by an OpenAPI 3.x specification
What
The REST API SHALL be described by an OpenAPI 3.x specification.
Acceptance
openapi.yaml validates; CI fails on drift.
Source
OBJ-1, OBJ-2, OBJ-3.
established project management guidelines Mapping
OpenAPI 3 spec is the integration contract - a configuration / architecture artifact in the PM plan.