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.S7.Cli.Tests/S7CommandBaseBuildOptionsTests.cs

@@ -20,13 +20,20 @@ public sealed class S7CommandBaseBuildOptionsTests
     // helper. The [Command] attribute is required by the CliFx analyzer
     // (CliFx_CommandMustBeAnnotated) — this command is never registered with the CLI app
     // but the analyzer rule fires for every ICommand implementor in the compilation.
+    /// <summary>Test-only S7CommandBase concrete subclass that exposes the protected BuildOptions helper.</summary>
     [Command("noop-test", Description = "Test-only probe of S7CommandBase.BuildOptions.")]
     private sealed class ProbeOnly : S7CommandBase
     {
+        /// <inheritdoc />
         public override ValueTask ExecuteAsync(IConsole console) => default;
+
+        /// <summary>Invokes the BuildOptions method with the given tags.</summary>
+        /// <param name="tags">The tag definitions to pass to BuildOptions.</param>
+        /// <returns>The resulting S7DriverOptions.</returns>
         public S7DriverOptions Invoke(IReadOnlyList<S7TagDefinition> 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()
     {
@@ -46,6 +53,7 @@ public sealed class S7CommandBaseBuildOptionsTests
         options.Probe.Enabled.ShouldBeFalse();
     }
 
+    /// <summary>Verifies that BuildOptions maps TimeoutMs to Timeout TimeSpan.</summary>
     [Fact]
     public void BuildOptions_maps_TimeoutMs_to_Timeout_TimeSpan()
     {
@@ -56,6 +64,7 @@ public sealed class S7CommandBaseBuildOptionsTests
         options.Timeout.ShouldBe(TimeSpan.FromMilliseconds(7500));
     }
 
+    /// <summary>Verifies that BuildOptions flows host, port, cpu, rack, and slot through.</summary>
     [Fact]
     public void BuildOptions_flows_host_port_cpu_rack_slot_through()
     {
@@ -78,6 +87,7 @@ public sealed class S7CommandBaseBuildOptionsTests
         options.Slot.ShouldBe((short)2);
     }
 
+    /// <summary>Verifies that BuildOptions forwards the tag list verbatim.</summary>
     [Fact]
     public void BuildOptions_forwards_tag_list_verbatim()
     {