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.FOCAS.Cli.Tests/FocasCommandBaseBuildOptionsTests.cs

@@ -18,10 +18,15 @@ public sealed class FocasCommandBaseBuildOptionsTests
     [Command("noop-test", Description = "Test-only probe of FocasCommandBase.BuildOptions.")]
     private sealed class ProbeOnly : FocasCommandBase
     {
+        /// <inheritdoc />
         public override ValueTask ExecuteAsync(IConsole console) => default;
+        /// <summary>Invokes the BuildOptions method with the given tags.</summary>
+        /// <param name="tags">The list of tag definitions.</param>
+        /// <returns>The built driver options.</returns>
         public FocasDriverOptions Invoke(IReadOnlyList<FocasTagDefinition> tags) => BuildOptions(tags);
     }
 
+    /// <summary>Verifies that BuildOptions disables probe for one-shot CLI runs.</summary>
     [Fact]
     public void BuildOptions_disables_probe_for_one_shot_cli_runs()
     {
@@ -39,6 +44,7 @@ public sealed class FocasCommandBaseBuildOptionsTests
         options.Probe.Enabled.ShouldBeFalse();
     }
 
+    /// <summary>Verifies that BuildOptions maps TimeoutMs to Timeout TimeSpan.</summary>
     [Fact]
     public void BuildOptions_maps_TimeoutMs_to_Timeout_TimeSpan()
     {
@@ -49,6 +55,7 @@ public sealed class FocasCommandBaseBuildOptionsTests
         options.Timeout.ShouldBe(TimeSpan.FromMilliseconds(7500));
     }
 
+    /// <summary>Verifies that BuildOptions flows host, port, and series through.</summary>
     [Fact]
     public void BuildOptions_flows_host_port_series_through()
     {
@@ -67,6 +74,7 @@ public sealed class FocasCommandBaseBuildOptionsTests
         options.Devices[0].Series.ShouldBe(FocasCncSeries.Zero_i_F);
     }
 
+    /// <summary>Verifies that BuildOptions forwards tag list verbatim.</summary>
     [Fact]
     public void BuildOptions_forwards_tag_list_verbatim()
     {