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Merge a GitHub PR via squash after /preparepr. Use when asked to merge a ready PR. Do not push to main or modify code. Ensure the PR ends in MERGED state and clean up worktrees after success.

Prepare a GitHub PR for merge by rebasing onto main, fixing review findings, running gates, committing fixes, and pushing to the PR head branch. Use after /reviewpr. Never merge or push to main.

Review-only GitHub pull request analysis with the gh CLI. Use when asked to review a PR, provide structured feedback, or assess readiness to land. Do not merge, push, or make code changes you intend to keep.