Agent Skills: resolve-pr-comments

Resolve bot review comments (CodeRabbit, Copilot, Gemini) on GitHub PRs using subagents. Use when: (1) User asks to 'review PR comments' or 'resolve PR comments', (2) User says 'work through PR N comments' or 'handle bot comments', (3) Need to triage CodeRabbit/Copilot/Gemini review comments, (4) Processing PR feedback at scale, (5) Want to see what's already fixed vs still pending. NOT for: creating PRs, reviewing code yourself, writing new reviews. Triggers: review PR comments, resolve PR comments, work through PR comments, handle bot comments, process CodeRabbit comments, triage PR feedback, fix PR review issues, resolve bot comments, pr comment resolver.