Maintains bidirectional traceability between canonical requirements and implementation, verification, decision, operational, and outcome evidence. Use when planning, implementing, reviewing, or closing work that must prove which requirement authorized a change, where it is implemented, which executed evidence verifies it, whether a linked outcome hypothesis is supported by current measurement, what remains unmapped, or whether references have gone stale. Do not use to invent requirement or hypothesis meaning, normalize the requirement graph, decide implementation readiness, or issue a functionality-worth verdict.
