Coding skills

• Reviewing Pull Requests — free — Reviews a pull request or diff for correctness bugs, missing tests and unclear naming, ranked by consequence rather than line order. Use when the user asks for a code review, shares a PR link or a diff, or asks whether a change is safe to merge.
• Writing Commit Messages — free — Writes Conventional Commits messages from a staged diff, explaining why a change was made rather than restating what it changed. Use when the user asks for a commit message, mentions committing, or shares a diff and asks how to describe it.
• Debugging Systematically — free — Finds the cause of a bug by reproducing it, forming one hypothesis at a time and testing each against evidence, instead of changing code until symptoms disappear. Use when something fails intermittently, works locally but not in production, or when several attempted fixes have not held.