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/Cli/ZB.MOM.WW.OtOpcUa.Driver.AbCip.Cli.Tests/SubscribeCommandIntervalTests.cs

@@ -12,6 +12,8 @@ namespace ZB.MOM.WW.OtOpcUa.Driver.AbCip.Cli.Tests;
 [Trait("Category", "Unit")]
 public sealed class SubscribeCommandIntervalTests
 {
+    /// <summary>Verifies that validate interval rejects non-positive milliseconds.</summary>
+    /// <param name="badMs">A non-positive interval value that should be rejected.</param>
     [Theory]
     [InlineData(0)]
     [InlineData(-1)]
@@ -23,6 +25,8 @@ public sealed class SubscribeCommandIntervalTests
         ex.Message.ShouldContain("--interval-ms");
     }
 
+    /// <summary>Verifies that validate interval accepts positive milliseconds.</summary>
+    /// <param name="goodMs">A positive interval value that should be accepted.</param>
     [Theory]
     [InlineData(1)]
     [InlineData(250)]