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.

tests/Client/ZB.MOM.WW.OtOpcUa.Client.CLI.Tests/BrowseCommandTests.cs

@@ -8,6 +8,7 @@ namespace ZB.MOM.WW.OtOpcUa.Client.CLI.Tests;
 
 public class BrowseCommandTests
 {
+    /// <summary>Verifies that Execute prints browse results correctly.</summary>
     [Fact]
     public async Task Execute_PrintsBrowseResults()
     {
@@ -35,6 +36,7 @@ public class BrowseCommandTests
         output.ShouldContain("[Method] Method1 (NodeId: ns=2;s=Meth1)");
     }
 
+    /// <summary>Verifies that Execute browses from the specified node ID.</summary>
     [Fact]
     public async Task Execute_BrowsesFromSpecifiedNode()
     {
@@ -57,6 +59,7 @@ public class BrowseCommandTests
         fakeService.BrowseNodeIds[0]!.Identifier.ShouldBe("StartNode");
     }
 
+    /// <summary>Verifies that Execute browses from null node when not specified.</summary>
     [Fact]
     public async Task Execute_DefaultBrowsesFromNull()
     {
@@ -77,6 +80,7 @@ public class BrowseCommandTests
         fakeService.BrowseNodeIds[0].ShouldBeNull();
     }
 
+    /// <summary>Verifies that Execute browses only a single level when not recursive.</summary>
     [Fact]
     public async Task Execute_NonRecursive_BrowsesSingleLevel()
     {
@@ -101,6 +105,7 @@ public class BrowseCommandTests
         fakeService.BrowseNodeIds.Count.ShouldBe(1);
     }
 
+    /// <summary>Verifies that Execute browses child nodes when recursive flag is set.</summary>
     [Fact]
     public async Task Execute_Recursive_BrowsesChildren()
     {
@@ -123,6 +128,7 @@ public class BrowseCommandTests
         fakeService.BrowseNodeIds.Count.ShouldBeGreaterThan(1);
     }
 
+    /// <summary>Verifies that Execute disconnects and disposes in the finally block.</summary>
     [Fact]
     public async Task Execute_DisconnectsInFinally()
     {