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/Drivers/ZB.MOM.WW.OtOpcUa.Driver.TwinCAT.Tests/TwinCATAmsAddressTests.cs

@@ -7,6 +7,10 @@ namespace ZB.MOM.WW.OtOpcUa.Driver.TwinCAT.Tests;
 [Trait("Category", "Unit")]
 public sealed class TwinCATAmsAddressTests
 {
+    /// <summary>Verifies that TryParse accepts valid AMS addresses in various formats.</summary>
+    /// <param name="input">The raw AMS address string to parse.</param>
+    /// <param name="netId">The expected AMS Net ID after parsing.</param>
+    /// <param name="port">The expected AMS port after parsing.</param>
     [Theory]
     [InlineData("ads://5.23.91.23.1.1:851", "5.23.91.23.1.1", 851)]
     [InlineData("ads://5.23.91.23.1.1:852", "5.23.91.23.1.1", 852)]
@@ -22,6 +26,8 @@ public sealed class TwinCATAmsAddressTests
         parsed.Port.ShouldBe(port);
     }
 
+    /// <summary>Verifies that TryParse rejects invalid AMS address forms.</summary>
+    /// <param name="input">The invalid AMS address string that should be rejected.</param>
     [Theory]
     [InlineData(null)]
     [InlineData("")]
@@ -41,6 +47,10 @@ public sealed class TwinCATAmsAddressTests
         TwinCATAmsAddress.TryParse(input).ShouldBeNull();
     }
 
+    /// <summary>Verifies that ToString produces canonical AMS address strings.</summary>
+    /// <param name="netId">The AMS Net ID to use.</param>
+    /// <param name="port">The AMS port to use.</param>
+    /// <param name="expected">The expected canonical string representation.</param>
     [Theory]
     [InlineData("5.23.91.23.1.1", 851, "ads://5.23.91.23.1.1")]        // default port stripped
     [InlineData("5.23.91.23.1.1", 852, "ads://5.23.91.23.1.1:852")]
@@ -49,6 +59,7 @@ public sealed class TwinCATAmsAddressTests
         new TwinCATAmsAddress(netId, port).ToString().ShouldBe(expected);
     }
 
+    /// <summary>Verifies that parsing and stringifying an AMS address is stable.</summary>
     [Fact]
     public void RoundTrip_is_stable()
     {