Joseph Doherty 1d62709060 abstractions+driver+client.shared: extend AlarmEventArgs with rich payload (PR E.7) ...

Fourteenth PR of the alarms-over-gateway epic
(docs/plans/alarms-over-gateway.md). Depends on PR B.2 (GalaxyDriver
implements IAlarmSource, merged) and B.3 (DriverNodeManager prefers
driver-native ack, merged).

Three new optional fields on Core.Abstractions.AlarmEventArgs:

- OperatorComment — populated by the driver-native gateway path on
  Acknowledge transitions. Null on raise / clear, and null on the
  sub-attribute fallback path where the comment collapses into a
  single string write.
- OriginalRaiseTimestampUtc — preserved across Acknowledge so OPC
  UA Part 9 conditions keep the original raise time.
- AlarmCategory — taxonomy bucket from the upstream alarm system.
  Maps to ConditionClassName downstream when a class mapping is
  configured.

GalaxyDriver.OnPumpAlarmTransition populates the new fields from
GalaxyAlarmTransition (PR B.1). Empty strings collapse to null so
consumers can use is-null rather than is-null-or-empty checks.

Client.Shared mirror DTO (Client.Shared/Models/AlarmEventArgs)
gains the same three properties so the Client.UI / Client.CLI
surfaces can reflect the rich payload — the actual UI/CLI
verbose-output and Show-Details rendering ship as a follow-up
PR; this PR locks in the payload contract.

Tests:
- 2 new tests in Driver.Galaxy.Tests pin the populated-vs-null
  behaviour for full-payload Acknowledge and bare-bones Raise
  transitions respectively.
- Solution build clean.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-04-30 17:46:47 -04:00

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