fix(driver-historian-wonderware-client): suppress xUnit1051 false-positive in ContractsWireParityTests

Add #pragma warning disable xUnit1051 at the top of ContractsWireParityTests.cs.
The xUnit1051 analyser fires on MessagePack's Serialize/Deserialize overloads that
have an optional CancellationToken parameter; these are synchronous parity tests
where the token is not meaningful — the suppression is scoped to this file only.

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

docs/AlarmTracking.md

@@ -110,7 +110,13 @@ AB CIP ALMD) route to AVEVA Historian via the Wonderware sidecar:
   present.
 - `SqliteStoreAndForwardSink` queues each transition to a local
   SQLite database and drains in the background via the resolved
-  writer.
+  writer. **The durability guarantee is bounded**: the queue capacity
+  defaults to 1,000,000 rows; under a sustained historian outage,
+  older non-dead-lettered rows are evicted (oldest first) to make
+  room for new events. The `HistorianSinkStatus.EvictedCount` counter
+  surfaces lifetime eviction events to the Admin UI
+  `/alarms/historian` diagnostics page so operators can detect silent
+  data loss without log scraping.
 - Sidecar (PR C.1 + C.2) forwards the events to `aahClientManaged`'s
   alarm-event write API; the live SDK call site is pinned during
   PR D.1's deploy-rig validation.