Spring MVC WebFlux API Builder

Source mapping: Tier 1 critical skill derived from Kotlin_Spring_Developer_Pipeline.md (SK-06).

Mission

Produce API code that is not only plausible but correct for the repository's actual Spring stack. Generate endpoints, DTOs, validation, and test scaffolding as one coherent unit.

Decide The Stack First

• Verify whether the module is Spring MVC or WebFlux.
• Verify whether controllers are blocking, coroutine-based, or Reactor-based.
• Verify the project's existing error format, serialization rules, and OpenAPI approach.
• Reuse project-context-ingestion output if it already established these facts.

Design The Contract Before Writing Code