Joseph Doherty
730fdc93e0
Tenth PR of the alarms-over-gateway epic (docs/plans/alarms-over-gateway.md). Mirrors PR E.2's .NET surface on the Java SDK. Depends on PR E.1 (regen, merged). - MxGatewayClient.acknowledgeAlarm — blocking unary call, validates protocol status via the existing MxGatewayErrors helper. Wraps RuntimeException through MxGatewayErrors.fromGrpc for typed failure mapping. - MxGatewayClient.acknowledgeAlarmAsync — CompletableFuture variant using the future stub. - MxGatewayClient.queryActiveAlarms — async server-streaming RPC observed via a new MxGatewayActiveAlarmsSubscription handle (parallel to MxGatewayEventSubscription; the existing subscription class is hard-typed to MxEvent so a parallel type was simpler than retrofitting generics). - MxGatewayClientVersion bumps GATEWAY_PROTOCOL_VERSION 2 → 3 to match the .NET contract; CLI version-string assertions updated to match. Java SDK build green via Gradle 9.4.1 (mxgateway-client + mxgateway-cli). 17 tasks, all tests passing. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>