Upgrade project dependencies safely — inventories current→target versions from the actual manifest/lockfile, reads the real changelog/release notes for every major bump (a breaking-change claim without a changelog citation is a hypothesis), greps the codebase for each breaking API before declaring it safe, upgrades one major at a time with tests+build quoted green between batches, and reports a per-package table of what changed and what evidence backs "safe". Use this skill whenever the user says "upgrade dependencies", "update packages", "bump <package>", "is it safe to upgrade", "update to the latest", "fix the npm audit", "dependabot PR review", or "/upgrade-deps" — ev…
