Stack Modernization

Keep a project on current, minimal, idiomatic dependencies. Three jobs: upgrade what is behind, delete what is unused, and migrate patterns a major upgrade left stranded (the v3 config still sitting in a v4 repo). Edits package.json and source, so it runs behind a confirmation gate and verifies before it upgrades.

Never trust training data for a version number — the current latest is looked up, not recalled.