review-pr.sh: After APPROVE verdict, kill tmux session, remove phase
file, review output, sentinel files, and review worktree. Same cleanup
for unknown verdicts. REQUEST_CHANGES keeps session alive per #300.
review-poll.sh: Add safety net in stale session cleanup loop — kill
sessions in terminal phase (PHASE:review_complete) even if review-pr.sh
cleanup was interrupted.
dev/phase-handler.sh: Add sentinel file cleanup (/tmp/ci-result-*,
/tmp/review-injected-*) to PHASE:done and PHASE:failed handlers.
dev-agent.sh: Add sentinel file cleanup to idle_timeout/idle_prompt
exit handler. Add belt-and-suspenders done) case to post-loop handler.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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