Вывод устаревшего кода и миграция

★ 8.7 · engineering

deprecation-and-migration is a Claude Code skill that manages the full lifecycle of retiring outdated code — from the initial deprecation decision through safe user migration to verified removal of the old system. It provides a structured decision framework with a checklist to evaluate migration scope and maintenance cost, distinguishes between advisory and compulsory deprecation, and covers the Strangler and Adapter patterns for incremental cutover. Built-in templates cover deprecation notices, per-consumer migration steps, the Churn Rule (infrastructure owners must migrate their users), and design-time planning so new systems are easier to sunset later. Ideal for engineering teams replacing legacy APIs, consolidating duplicate implementations, sunsetting unused features, or reducing the ongoing overhead of code that no longer earns its keep.