Add dedicated request/response DTOs for all controllers, replacing raw JsonNode parameters with validated types. Move OpenAPI path-prefix stripping and ProcessorNode children injection into OpenApiCustomizer beans so the spec served at /api/v1/api-docs is already clean — eliminating the need for the ui/scripts/process-openapi.mjs post-processing script. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>