Add step 1a: check open PRs first and recommend /pr-review (review -> merge) before selecting a batch. Open PRs are in-flight WIP; starting new work on top piles up the board, and the cascade-correct next batch is often dependency-gated on an in-review PR (won't show as --unblocked, or must stack on an unmerged branch). Renumber the existing 1a-1d substeps to 1b-1e. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>