Use when a large pull request should be merged and deployed in safe parts instead of all at once. Analyzes every commit in the PR, groups them into atomic logical units that each ship independently without downtime, orders the units by dependency and rollback risk, proposes squashes for a clean human-readable history, and proposes corrected subjects for vague or inaccurate commit messages. Read-only — it proposes the plan and never rewrites history, pushes, or merges.
