docs(alarms): #656 re-statement flag + ActiveAcknowledged kind (AlarmTracking, OpcUaClient, Galaxy, ScriptedAlarms, CLAUDE.md)

Claude-Session: https://claude.ai/code/session_01Ef2ozxS7QPanGT8uoATbTe

CLAUDE.md

@@ -1132,7 +1132,13 @@ host logger factory (wired in `DriverFactoryBootstrap`; the FOCAS and TwinCAT fa
   `ForwardNativeAlarm` writes no second "Activated" `/alerts` row — every native driver's told-record dies with its
   instance, and a deploy respawns the driver. Only `Retrigger` (or inactive → active) un-acks, so a source whose
   UPSTREAM is authoritative for the ack sends Retrigger for an unacked re-statement: OpcUaClient on first sight of a
-  condition (no prior told), Galaxy for an unacked active snapshot entry.
+  condition (no prior told), Galaxy for an unacked active snapshot entry. **Those two also flag
+  `AlarmEventArgs.IsRestatement` (#656)** — history-only: a flagged Retrigger on an Active+unacked condition with the
+  same message AND severity, or a flagged Clear on an inactive one, writes no `/alerts` row (every Galaxy reconnect used
+  to duplicate them). Active+acked is the atomic **`AlarmTransitionKind.ActiveAcknowledged`** (Galaxy snapshot
+  `ActiveAcked`, OpcUaClient inactive→acked-active) — never Acknowledge (kept a cold host's `Active=false`: the alarm was
+  invisible) nor Raise+Acknowledge (an unacked intermediate). `NativeAlarmProjector` returns the rows to write; unflagged
+  sources (FOCAS/MTConnect/AbCip, live Galaxy) are unchanged. E2E: `Runtime.Tests/NativeAlarmRestatementEndToEndTests`.
 - **Re-Initialize without teardown (#630):** FOCAS, AbLegacy, AbCip, TwinCAT, S7 and OpcUaClient `InitializeAsync`
   first release the prior device/session state (cancel, ≤ 5 s join, dispose — incl. the AbCip alarm projection;
   FOCAS's is PAUSED, its told record kept, #647) — the device-state half of `ShutdownAsync` only; the poll engine is kept and the actor re-subscribes