Generate and run post-migration tests from the frozen baseline specification.
Install
npx skills add microsoft/github-copilot-modernization --skill verify-test-baselinenpx skills add microsoft/github-copilot-modernization --skill verify-test-baseline -a claude-code -gnpx skills add microsoft/github-copilot-modernization --skill verify-test-baseline -a codex -ggemini skills install https://github.com/microsoft/github-copilot-modernization.git --path plugins/github-copilot-modernization/skills/verify-test-baselinegh skill install microsoft/github-copilot-modernization verify-test-baselinegit clone --depth 1 https://github.com/microsoft/github-copilot-modernization /tmp/microsoft__github-copilot-modernization
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/microsoft__github-copilot-modernization/plugins/github-copilot-modernization/skills/verify-test-baseline ~/.claude/skills/verify-test-baseline # Claude Code
cp -R /tmp/microsoft__github-copilot-modernization/plugins/github-copilot-modernization/skills/verify-test-baseline ~/.agents/skills/verify-test-baseline # Codex, Cursor, Gemini CLI, Copilot, OpenCode