Security Code Review

Review the changes in a GitHub PR for security. An issue input must identify one open linked PR. Report a verdict for each category.

Prerequisites

• gh (GitHub CLI) must be installed and authenticated.
• git must be available.
• Network access to clone repositories and fetch PR metadata.

Step 1: Parse the GitHub URL

If the user gives a PR or issue URL, extract the owner, repository, and number. Otherwise, ask for the URL.