feat: port session 03 — Configuration & Options types, Clone, MergeOptions, SetBaseline
- ServerOptionTypes.cs: all supporting types — ClusterOpts, GatewayOpts, LeafNodeOpts,
WebsocketOpts, MqttOpts, RemoteLeafOpts, RemoteGatewayOpts, CompressionOpts,
TlsConfigOpts, JsLimitOpts, JsTpmOpts, AuthCalloutOpts, ProxiesConfig,
IAuthentication, IAccountResolver, enums (WriteTimeoutPolicy, StoreCipher, OcspMode)
- ServerOptions.cs: full Options struct with ~100 properties across 10 subsystems
(general, logging, networking, TLS, cluster, gateway, leafnode, websocket, MQTT, JetStream)
- ServerOptions.Methods.cs: Clone (deep copy), MergeOptions, SetBaselineOptions,
RoutesFromStr, NormalizeBasePath, OverrideTls, OverrideCluster, ExpandPath,
HomeDir, MaybeReadPidFile, GetDefaultAuthTimeout, ConfigFlags.NoErrOnUnknownFields
- 17 tests covering defaults, random port, merge, clone, expand path, auth timeout,
routes parsing, normalize path, cluster override, config flags
- Config file parsing (processConfigFileLine 765-line function) deferred to follow-up
- All 130 tests pass (129 unit + 1 integration)
- DB: features 344/3673 complete, tests 148/3257 complete (9.1% overall)
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