perf(comms): alarms-only seed, capped buffers, at-least-once audit pull

src/ZB.MOM.WW.ScadaBridge.Communication/Grpc/SiteCommandDtoMapper.cs

@@ -1620,7 +1620,10 @@ public static class SiteCommandDtoMapper
         return new DebugSnapshotRequestDto
         {
             InstanceUniqueName = request.InstanceUniqueName,
-            CorrelationId = request.CorrelationId
+            CorrelationId = request.CorrelationId,
+            // Additive field 3 — proto3 false default means an older site that does
+            // not know the field simply returns the full snapshot (correct, just fatter).
+            AlarmsOnly = request.AlarmsOnly
         };
     }
 
@@ -1631,7 +1634,7 @@ public static class SiteCommandDtoMapper
     {
         ArgumentNullException.ThrowIfNull(dto);
 
-        return new DebugSnapshotRequest(dto.InstanceUniqueName, dto.CorrelationId);
+        return new DebugSnapshotRequest(dto.InstanceUniqueName, dto.CorrelationId, dto.AlarmsOnly);
     }
 
     /// <summary>Projects a <see cref="SubscribeDebugViewRequest"/> onto the wire.</summary>