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/CommandBaseTests.cs

@@ -8,6 +8,7 @@ namespace ZB.MOM.WW.OtOpcUa.Client.CLI.Tests;
 
 public class CommandBaseTests
 {
+    /// <summary>Verifies that common options map to connection settings correctly.</summary>
     [Fact]
     public async Task CommonOptions_MapToConnectionSettings_Correctly()
     {
@@ -37,6 +38,7 @@ public class CommandBaseTests
         settings.AutoAcceptCertificates.ShouldBeTrue();
     }
 
+    /// <summary>Verifies that encrypt option maps to SignAndEncrypt.</summary>
     [Fact]
     public async Task SecurityOption_Encrypt_MapsToSignAndEncrypt()
     {
@@ -54,6 +56,7 @@ public class CommandBaseTests
         fakeService.LastConnectionSettings!.SecurityMode.ShouldBe(SecurityMode.SignAndEncrypt);
     }
 
+    /// <summary>Verifies that none option maps to None.</summary>
     [Fact]
     public async Task SecurityOption_None_MapsToNone()
     {
@@ -71,6 +74,7 @@ public class CommandBaseTests
         fakeService.LastConnectionSettings!.SecurityMode.ShouldBe(SecurityMode.None);
     }
 
+    /// <summary>Verifies that no failover URLs results in null FailoverUrls.</summary>
     [Fact]
     public async Task NoFailoverUrls_FailoverUrlsIsNull()
     {