Fix Security Issue

Implement a code fix for a security issue that has already been reviewed by the review-security-issue skill.

Prerequisites

• The gh CLI must be authenticated (gh auth status)
• You must be in a git repository with a GitHub remote
• The issue must have both the topic:security and state:agent-ready labels. If either is missing, do not proceed.
• The issue must have a prior security review comment (posted by review-security-issue) with a Legitimate concern determination and a remediation plan

Agent Comment Marker

All PR descriptions and comments posted by this skill must begin with the following marker line:

> **🔧 security-fix-agent**