Dependency Upgrade Rehearsal Lab

 Build a dependency-upgrade rehearsal lab that analyzes a software repository and evaluates proposed package or framework upgrades before they are merged. Inspect dependency relationships, breaking changes supplied in release notes, deprecated APIs, version conflicts, runtime requirements, and existing test coverage. Produce a staged upgrade plan, identify files likely to require changes, generate candidate patches, and create regression tests for affected behavior. Compare the current and proposed dependency trees, explain rollback options, and clearly distinguish verified compatibility problems from potential risks.