Prepare PR

Overview

Prepare the PR head branch for merge after /review-pr.

Inputs

• Ask for PR number or URL.
• If missing, use .local/pr-meta.env if present in the PR worktree.

Safety

• Never push to main.
• Only push to PR head with explicit --force-with-lease against known head SHA.
• Do not run git clean -fdx.
• Wrappers are cwd-agnostic; run from repo root or PR worktree.

Execution Contract