ADR-025 I2 Closure Release Integration (Step4 Closed-Loop)¶

Intent¶

Integrate ADR-025 I2 closure evidence into release/promote flows with an explicit mode contract.

Status Sync (2026-02-25)¶

Step4A merged: contract/policy freeze (schemas/closure_release_policy_v1.json) + reviewer gate.
Step4B merged: release wiring + helper script (scripts/ci/adr025-closure-release.sh) + deterministic tests.
Step4C merged: runbook + checklist/review-pack + closure reviewer gate.
Stabilization merged: Stab A/B/C/D (scripts/ci/review-adr025-i2-stab-*.sh) including decision JSON logging coverage.

Scope¶

Release integration consumes the nightly closure artifact: - workflow: adr025-nightly-evidence.yml - artifact: adr025-closure-report - files: - closure_report_v1.json - closure_report_v1.md

Gate Modes (v1)¶

Supported modes: - off: skip closure integration entirely. - attach: fetch closure artifact and attach/persist as release evidence (default). - warn: evaluate closure policy, report non-pass in logs, do not fail release. - enforce: evaluate closure policy and fail release on non-pass.

Default mode: - attach

Exit Contract (integration script)¶

0: pass / completed in current mode.
1: policy fail (closure below threshold or hard violations).
2: measurement/contract fail (missing artifact, parse errors, invalid contract).

Mode handling: - off: always returns 0. - attach: returns 0 on successful fetch/attach, 2 on measurement failure. - warn: converts policy/measurement failures to warnings in release flow. - enforce: propagates 1/2 as hard release failure.

Policy Source¶

schemas/closure_release_policy_v1.json defines: - default mode - score threshold - minimum readiness window - classifier version lock - release evidence requirements

Safety¶

No silent bypass: mode is explicit and logged.
No PR trigger impact (release-lane only integration).
No workflow permission expansion required by the closure helper path.