GitHub Contributor A phase-based playbook for shipping pull requests that maintainers actually want to merge. The skill is structured around the real PR lifecycle — discovery → implementation → quality gates → description → post-submission — because each phase has its own failure modes and the most common mistake is doing the right thing at the wrong phase (e.g., writing the perfect description for a PR that's 10× too large). Phase 0 — When to use this skill Use this skill when all of these are true: - You are contributing to a repo you do not maintain (the maintainer can close your PR withou…