Code Review

Perform a structured code review. Supports local changes and GitHub PRs.

Instructions

If $ARGUMENTS is a PR number or URL:

1. Run gh pr diff $ARGUMENTS to get the diff
2. Run gh pr view $ARGUMENTS to get PR description and metadata
3. Run gh pr checks $ARGUMENTS to see CI status

If no arguments (local changes):

1. Run git diff --staged first. If empty, git diff. If empty, git diff HEAD~1.