Agent Skills: git-workflow

End-to-end git workflow for coding agents on this machine: wtm worktrees, scoped commit messages (`<scope>: <description>` — NEVER Conventional Commits feat:/fix:/chore:), commit-as-you-work cadence, small-PR contract (~300–500 lines, split bigger) with gh-stack stacked PRs, and a scar-tissue rule-append loop. Use for ANY git or GitHub operation — branching, worktrees, committing, pushing, PRs — and whenever a git/PR mistake needs capturing as a rule.