M3 R3.2: AddHistoricalValuesAsync supports Double + Int (Int2/Int4/UInt4)

Extended the historical-write serializer from Float-only to all five analog types EnsureTagAsync
supports. Captured each type's "ON" buffer live from the native client (sandbox tag per type,
written + captured + deleted):

- The 4-byte value descriptor (C0 10 01 00) is CONSTANT across types — it does not encode the type.
- The value is u32(0) + native-width value, width by the tag's declared type:
  Float->float32, Double->double64, Int2->int16, Int4->int32, UInt4->uint32.

HistorianHistoricalWriteProtocol.SerializeAddStreamValuesBuffer now takes the HistorianDataType and
encodes accordingly (unsupported types throw ProtocolEvidenceMissingException). The orchestrator
resolves the type from the tag-info NativeDataTypeDescriptor via MapDataType. Harness capture-write
gained --data-type. Golden-tested against all five live captures + the gated write/read-back test
validated each type end-to-end through the pure-managed SDK; 281 unit tests pass.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B6mcaT2PjRFKcogzp9UkfC

src/AVEVA.Historian.Client/Grpc/HistorianGrpcHistoricalWriteOrchestrator.cs

@@ -77,6 +77,7 @@ internal sealed class HistorianGrpcHistoricalWriteOrchestrator
         }
 
         Guid tagGuid = parsed[0].TypeId;
+        HistorianDataType dataType = HistorianWcfTagClient.MapDataType(parsed[0].NativeDataTypeDescriptor);
 
         var historyClient = new GrpcHistory.HistoryService.HistoryServiceClient(connection.Channel);
         foreach (HistorianHistoricalValue value in values)
@@ -84,6 +85,7 @@ internal sealed class HistorianGrpcHistoricalWriteOrchestrator
             cancellationToken.ThrowIfCancellationRequested();
             byte[] buffer = HistorianHistoricalWriteProtocol.SerializeAddStreamValuesBuffer(
                 tagGuid,
+                dataType,
                 value.TimestampUtc,
                 value.Value,
                 DateTime.UtcNow,