docs: backfill XML documentation across 756 files

Adds <summary>, <param>, <typeparam>, and <inheritdoc/> tags to public
members surfaced by commentchecker — resolves 5,847 of 5,869 issues
(99.6%) across three /fixdocs passes.

src/Server/ZB.MOM.WW.OtOpcUa.OpcUaServer/SdkAddressSpaceSink.cs

@@ -12,23 +12,45 @@ public sealed class SdkAddressSpaceSink : IOpcUaAddressSpaceSink
 {
     private readonly OtOpcUaNodeManager _nodeManager;
 
+    /// <summary>Initializes a new instance of the SdkAddressSpaceSink class.</summary>
+    /// <param name="nodeManager">The OPC UA node manager.</param>
     public SdkAddressSpaceSink(OtOpcUaNodeManager nodeManager)
     {
         ArgumentNullException.ThrowIfNull(nodeManager);
         _nodeManager = nodeManager;
     }
 
+    /// <summary>Writes a value to the OPC UA address space.</summary>
+    /// <param name="nodeId">The OPC UA node identifier.</param>
+    /// <param name="value">The value being written.</param>
+    /// <param name="quality">The OPC UA quality status.</param>
+    /// <param name="sourceTimestampUtc">The source timestamp in UTC.</param>
     public void WriteValue(string nodeId, object? value, OpcUaQuality quality, DateTime sourceTimestampUtc)
         => _nodeManager.WriteValue(nodeId, value, quality, sourceTimestampUtc);
 
+    /// <summary>Writes alarm state to the OPC UA address space.</summary>
+    /// <param name="alarmNodeId">The alarm node identifier.</param>
+    /// <param name="active">Whether the alarm is active.</param>
+    /// <param name="acknowledged">Whether the alarm is acknowledged.</param>
+    /// <param name="sourceTimestampUtc">The source timestamp in UTC.</param>
     public void WriteAlarmState(string alarmNodeId, bool active, bool acknowledged, DateTime sourceTimestampUtc)
         => _nodeManager.WriteAlarmState(alarmNodeId, active, acknowledged, sourceTimestampUtc);
 
+    /// <summary>Ensures a folder node exists in the address space.</summary>
+    /// <param name="folderNodeId">The folder node identifier.</param>
+    /// <param name="parentNodeId">The parent folder node identifier.</param>
+    /// <param name="displayName">The display name for the folder.</param>
     public void EnsureFolder(string folderNodeId, string? parentNodeId, string displayName)
         => _nodeManager.EnsureFolder(folderNodeId, parentNodeId, displayName);
 
+    /// <summary>Ensures a variable node exists in the address space.</summary>
+    /// <param name="variableNodeId">The variable node identifier.</param>
+    /// <param name="parentFolderNodeId">The parent folder node identifier.</param>
+    /// <param name="displayName">The display name for the variable.</param>
+    /// <param name="dataType">The OPC UA data type.</param>
     public void EnsureVariable(string variableNodeId, string? parentFolderNodeId, string displayName, string dataType)
         => _nodeManager.EnsureVariable(variableNodeId, parentFolderNodeId, displayName, dataType);
 
+    /// <summary>Rebuilds the entire OPC UA address space.</summary>
     public void RebuildAddressSpace() => _nodeManager.RebuildAddressSpace();
 }