Stability checkpoint — svc 1.0.56 (wave 7 SB3 Jackson V3 isolation + ADR-0061) Captures !197 (wave 7) : - ADR-0061 : 14-entry SB3/SB4 incompatibility catalog (living doc) - 3 SB3 overlays : RecentCustomerBuffer + OpenApiConfig (main + 2 tests) - 2 SB3 BOM pins : spring-boot-starter-hateoas + springdoc 2.7.0 Result : 535 SB3 unit tests run (was 0). 4 errors remain (KafkaConfigTest V3 transitive leak via Spring Kafka — deferred per ADR-0061 Entry 4). Default SB4 profile : intact (12/12 tests on RecentCustomerBufferTest + KafkaConfigTest pass).