NATS Strict Full Go Parity Map

Capability	Behavior	Tests	Docs
Strict capability inventory guardrail	done	done	closed
Account-scoped remote delivery	done	done	closed
Idempotent inter-server interest propagation	done	done	closed
Gateway reply remap and leaf loop-marker transparency	done	done	closed
MQTT packet-level parser and writer	done	done	closed
MQTT session and QoS acknowledgement runtime	done	done	closed
MQTT auth/TLS/keepalive integration	done	done	closed
JetStream retention runtime semantics	done	done	closed
JetStream consumer ack/backoff/replay/flow state machine	done	done	closed
JetStream mirror/source runtime semantics	done	done	closed
FileStore durable invariants and recovery contract	done	done	closed
RAFT quorum/next-index/snapshot/membership semantics	done	done	closed
JetStream meta/replica governance contracts	done	done	closed
Runtime profiling and config option drift closure	done	done	closed
Differences and parity-map synchronization	done	done	closed