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.AbCip.Tests/AbCipHostProbeTests.cs

@@ -9,6 +9,7 @@ namespace ZB.MOM.WW.OtOpcUa.Driver.AbCip.Tests;
 [Trait("Category", "Unit")]
 public sealed class AbCipHostProbeTests
 {
+    /// <summary>Verifies that GetHostStatuses returns one entry per configured device.</summary>
     [Fact]
     public async Task GetHostStatuses_returns_one_entry_per_device()
     {
@@ -29,6 +30,7 @@ public sealed class AbCipHostProbeTests
         statuses.ShouldAllBe(s => s.State == HostState.Unknown);
     }
 
+    /// <summary>Verifies that a successful probe read transitions the host state to Running.</summary>
     [Fact]
     public async Task Probe_with_successful_read_transitions_to_Running()
     {
@@ -55,6 +57,7 @@ public sealed class AbCipHostProbeTests
         await drv.ShutdownAsync(CancellationToken.None);
     }
 
+    /// <summary>Verifies that a failed probe read transitions the host state to Stopped.</summary>
     [Fact]
     public async Task Probe_with_read_failure_transitions_to_Stopped()
     {
@@ -83,6 +86,7 @@ public sealed class AbCipHostProbeTests
         await drv.ShutdownAsync(CancellationToken.None);
     }
 
+    /// <summary>Verifies that the probe is disabled when the Enabled option is false.</summary>
     [Fact]
     public async Task Probe_disabled_when_Enabled_is_false()
     {
@@ -103,6 +107,7 @@ public sealed class AbCipHostProbeTests
         await drv.ShutdownAsync(CancellationToken.None);
     }
 
+    /// <summary>Verifies that the probe is skipped when ProbeTagPath is null.</summary>
     [Fact]
     public async Task Probe_skipped_when_ProbeTagPath_is_null()
     {
@@ -119,6 +124,7 @@ public sealed class AbCipHostProbeTests
         await drv.ShutdownAsync(CancellationToken.None);
     }
 
+    /// <summary>Verifies that the probe loops across multiple devices independently.</summary>
     [Fact]
     public async Task Probe_loops_across_multiple_devices_independently()
     {
@@ -155,6 +161,7 @@ public sealed class AbCipHostProbeTests
 
     // ---- IPerCallHostResolver ----
 
+    /// <summary>Verifies that ResolveHost returns the declared device for a known tag.</summary>
     [Fact]
     public async Task ResolveHost_returns_declared_device_for_known_tag()
     {
@@ -178,6 +185,7 @@ public sealed class AbCipHostProbeTests
         drv.ResolveHost("B").ShouldBe("ab://10.0.0.6/1,0");
     }
 
+    /// <summary>Verifies that ResolveHost falls back to the first device for an unknown tag reference.</summary>
     [Fact]
     public async Task ResolveHost_falls_back_to_first_device_for_unknown_reference()
     {
@@ -191,6 +199,7 @@ public sealed class AbCipHostProbeTests
         drv.ResolveHost("does-not-exist").ShouldBe("ab://10.0.0.5/1,0");
     }
 
+    /// <summary>Verifies that ResolveHost falls back to the driver instance ID when no devices are configured.</summary>
     [Fact]
     public async Task ResolveHost_falls_back_to_DriverInstanceId_when_no_devices()
     {
@@ -200,6 +209,7 @@ public sealed class AbCipHostProbeTests
         drv.ResolveHost("anything").ShouldBe("drv-1");
     }
 
+    /// <summary>Verifies that ResolveHost for a UDT member walks to the synthesized definition.</summary>
     [Fact]
     public async Task ResolveHost_for_UDT_member_walks_to_synthesised_definition()
     {