Stability checkpoint — compat matrix officially closed (MR !200 doc) Pipeline post-merge green on main commit 6dca782. ADR-0061 Entry 2 status flipped PARTIAL → FIXED with the verification table showing all 5 cells of the SB3/SB4 × Java17/21/25 matrix exit 0 : | Cell | Command | Result | |---|---|---| | SB4 + J25 | mvn verify | BUILD SUCCESS | | SB4 + J21 | mvn verify -Dcompat | BUILD SUCCESS | | SB4 + J17 | mvn verify -Dcompat -Djava17 | BUILD SUCCESS | | SB3 + J21 | mvn verify -Dsb3 | BUILD SUCCESS | | SB3 + J17 | mvn verify -Dsb3 -Djava17 | BUILD SUCCESS | Compat matrix structural debt section in TASKS.md reduced from 🔴 RED to ✅ DONE. See: previous fixes wave 7 (Jackson V2 overlay) + wave 8 (Spring Kafka 3.3.4 BOM pin + KafkaConfig V2 serializer overlay) covered everything end-to-end ; this checkpoint is a doc-only confirmation.