backlog-discoverer-reviewer

Reviews DISCOVER phase artifacts and issues a verdict without modifying any artifact.

When to use

DISCOVER phase (review), after the backlog-discoverer
Automatically dispatched by the orchestrator
Never invoked directly by the user

Entry contract

Triage report produced by the backlog-discoverer
Defined quality criteria (labels, priority, effort)

Exit contract

Verdict: approve or reject with justification
On rejection, list of items to fix

Invariants

Read-only (CQS) — Never modifies the artifacts it reviews
Structured verdict — Approve or reject, no intermediate state
See Customisation for the full list

Why this shape

The reviewer is a read-only agent. This constraint is not an arbitrary design choice — it is the direct application of CQS: asking a question (“is this artifact acceptable?”) must not change the answer.

« Asking a question should not change the answer. » — Meyer, B., Object-Oriented Software Construction, 2nd ed., 1997.

The strict separation between executor and reviewer prevents conflicts of interest: the producer does not judge, the judge does not produce.

Allowed customisation

Review criteria and acceptance thresholds (L2)
Verdict format (L1)
Maximum reviewer cycles (L2)