Writes or audits the migration guide for a breaking change - what breaks, ordered by blast radius, with a detection signal and before/after code per entry, a deprecation timeline, the codemod's coverage boundary, and verification by a cold upgrade of a real project.
Install
npx skills add samber/developer-relations-skills --skill version-migration-guidenpx skills add samber/developer-relations-skills --skill version-migration-guide -a claude-code -gnpx skills add samber/developer-relations-skills --skill version-migration-guide -a codex -ggemini skills install https://github.com/samber/developer-relations-skills.git --path skills/version-migration-guidegh skill install samber/developer-relations-skills version-migration-guidegit clone --depth 1 https://github.com/samber/developer-relations-skills /tmp/samber__developer-relations-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/samber__developer-relations-skills/skills/version-migration-guide ~/.claude/skills/version-migration-guide # Claude Code
cp -R /tmp/samber__developer-relations-skills/skills/version-migration-guide ~/.agents/skills/version-migration-guide # Codex, Cursor, Gemini CLI, Copilot, OpenCode