Upgrade Breaking Change Navigator

Source mapping: Tier 3 specialized skill derived from Kotlin_Spring_Developer_Pipeline.md (SK-22).

Mission

Turn a risky platform upgrade into a controlled sequence of small, verifiable moves. Optimize for incremental confidence, not for a single giant leap that hides the source of breakage.

Read First

• Current Gradle wrapper, Kotlin plugin, Spring Boot plugin, JDK, and key dependency versions.
• Version catalogs, convention plugins, and BOM ownership.
• Build failures, test failures, runtime startup failures, and deprecation reports.
• The actual libraries and features in use: Security, Data JPA, WebFlux, AOT/native, messaging, serialization, cloud config.
• Official upgrade notes when available.

Upgrade Strategy