fix(review-queue): bound collect-evidence timeouts

[scarmani]

Summary

• add reviewer/overall timeout controls to collect-evidence CLI surfaces
• fail closed when reviewer orchestration times out, recording per-family failures and no partial quorum posts
• preserve evidence-lint-before-post and tier-gated posting behavior

Validation

• python3 -m pytest tests/swarm/test_quorum_evidence.py tests/cli/commands/test_review_queue.py
• pre-commit run --files scripts/collect_quorum_evidence.py aragora/swarm/quorum_evidence.py aragora/cli/commands/review_queue.py aragora/cli/parser.py tests/swarm/test_quorum_evidence.py tests/cli/commands/test_review_queue.py

Draft only: do not retry #8457 evidence or merge in this cycle.

[scarmani]

Grok independent model review

Reviewer: grok (xai) — independent adversarial model review via the Aragora Grok reviewer, grounded on the exact PR head.
Head: ff27386 (ff27386), committed 2026-06-16T15:40:13Z.
PR: #8472.
Model family: grok

Verdict: PASS

• No blocking issues identified. Logic is defensive (fail-closed on timeout/invalid fork, validated positive floats, env restore, process group signals with fallbacks). Tests cover key paths (start failures, queue lag, mixed slow reviewers). Dupe parser wiring and thread/process switch are intentional for CLI/script parity.

dogfood: yes

[scarmani]

OpenAI independent model review

Reviewer: openai (openai) — independent adversarial model review via Codex CLI OpenAI harness, grounded on the exact PR head.
Head: ff27386 (ff27386), committed 2026-06-16T15:40:13Z.
PR: #8472.
Model family: openai

Verdict: PASS

• No blocking issues found in the reviewed diff.
• [P3] aragora/swarm/quorum_evidence.py:1104 comment says non-fork platforms get a thread fallback, but implementation later fails all reviewers closed when --overall-timeout is set and fork is unavailable. The behavior is tested, so this is a documentation/comment mismatch rather than a correctness blocker.

dogfood: yes

[github-actions]

Aragora Code Review

Advisory-only review. No issues found.