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/Core/ZB.MOM.WW.OtOpcUa.Core.Tests/Resilience/CapabilityInvokerTests.cs

@@ -13,6 +13,7 @@ public sealed class CapabilityInvokerTests
         DriverResilienceOptions options) =>
         new(builder, "drv-test", () => options);
 
+    /// <summary>Verifies that the capability invoker returns the value from the call site.</summary>
     [Fact]
     public async Task Read_ReturnsValue_FromCallSite()
     {
@@ -27,6 +28,7 @@ public sealed class CapabilityInvokerTests
         result.ShouldBe(42);
     }
 
+    /// <summary>Verifies that the capability invoker retries on transient failures.</summary>
     [Fact]
     public async Task Read_Retries_OnTransientFailure()
     {
@@ -49,6 +51,7 @@ public sealed class CapabilityInvokerTests
         attempts.ShouldBe(2);
     }
 
+    /// <summary>Verifies that non-idempotent writes do not retry even when the policy has retries configured.</summary>
     [Fact]
     public async Task Write_NonIdempotent_DoesNotRetry_EvenWhenPolicyHasRetries()
     {
@@ -81,6 +84,7 @@ public sealed class CapabilityInvokerTests
         attempts.ShouldBe(1, "non-idempotent write must never replay");
     }
 
+    /// <summary>Verifies that idempotent writes retry when the policy has retries configured.</summary>
     [Fact]
     public async Task Write_Idempotent_Retries_WhenPolicyHasRetries()
     {
@@ -111,6 +115,7 @@ public sealed class CapabilityInvokerTests
         attempts.ShouldBe(2);
     }
 
+    /// <summary>Verifies that writes do not retry when the policy has zero retries configured.</summary>
     [Fact]
     public async Task Write_Default_DoesNotRetry_WhenPolicyHasZeroRetries()
     {
@@ -137,6 +142,7 @@ public sealed class CapabilityInvokerTests
         attempts.ShouldBe(1, "tier-A default for Write is RetryCount=0");
     }
 
+    /// <summary>Verifies that different hosts are honored independently in the resilience pipeline.</summary>
     [Fact]
     public async Task Execute_HonorsDifferentHosts_Independently()
     {