Validation Gate

Before this ADR changes from Proposed to Accepted:

1. Run at least two independent read-only reviewers against this exact artifact using materially identical prompts and the complexity, convenience, and evolution dimensions.
2. Normalize their P1, P2, and P3 findings. Resolve every supported P1 or P2 in the owning section and repeat the review until all successful reviewers set p1_p2_clear to true. Record timeout, unavailable-command, or parse evidence for attempted reviewers that cannot participate.
3. Store structured review output under ignored .harness/state/ or attach the same structured evidence to the review surface.
4. Regenerate the required documentation graph, run the focused documentation and package-boundary checks, and run git diff --check.
5. Perform a Change Traceability Review Readiness Check over the final local or staged diff, including the matching spec, acceptance ids, changed owners, generated files, tests, risk, AI marker, and staged/unstaged split.
6. Obtain an explicit maintainer acceptance decision. Passing automated or AI review alone does not change decision status.