Expand XML docs across bridge and test code

tests/ZB.MOM.WW.LmxOpcUa.Tests/Integration/ArrayWriteTests.cs

@@ -8,8 +8,14 @@ using ZB.MOM.WW.LmxOpcUa.Tests.Helpers;
 
 namespace ZB.MOM.WW.LmxOpcUa.Tests.Integration
 {
+    /// <summary>
+    /// Verifies OPC UA indexed array writes against the bridge's whole-array runtime update behavior.
+    /// </summary>
     public class ArrayWriteTests
     {
+        /// <summary>
+        /// Confirms that writing a single array element updates the correct slot while preserving the rest of the array.
+        /// </summary>
         [Fact]
         public async Task Write_SingleArrayElement_UpdatesWholeArrayValue()
         {