# 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 |