Handles the messy reality of major dependency upgrades with a structured approach that actually works. Runs compatibility checks against version matrices, generates migration scripts for breaking changes, and sets up staged rollout plans so you're not upgrading everything at once and breaking your build. Includes automated testing strategies, rollback procedures, and configurations for Renovate and Dependabot to keep dependencies current without the chaos. The compatibility matrix and codemod examples are solid for handling framework upgrades like React major versions where the breaking changes can be subtle but destructive.
npx skills add https://github.com/wshobson/agents --skill dependency-upgrade