Non-Functional Delta: YU12-aeron-cluster

Parent: YU11-aeron-replication

ID	Delta
NFD-AC01	The clustered service application thread is exact-zero-allocation after warm-up under the inherited isolated -Xbatch gates; inherited base/risk/Epsilon gates stay exact-zero.
NFD-AC02	Three comparable 30-second GKE runs (label aeron-cluster, inherited harness) meet or exceed the stored YU11 Aeron HA baseline (25,149 booked/s cleanest run; single-BLP parity) with zero failed/risk-misclassified submissions.
NFD-AC03	Client-observed failover; leader kill to first accepted order through the gateway; completes in under 1,000 ms.
NFD-AC04	The strict no-ID-reuse recovery proof passes: post-snapshot orders, recovery from snapshot + log tail, promotion, next ID strictly greater than every ID ever issued.
NFD-AC05	Three members preserve commit availability through one member failure; snapshot/log disk usage stays bounded by post-snapshot log management.
NFD-AC06	Every performance record stores exact source/image/schema/config/node identities, per-run values, means, and same-day comparators.