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/PerCallHostResolverDispatchTests.cs

@@ -17,11 +17,18 @@ public sealed class PerCallHostResolverDispatchTests
     private sealed class StaticResolver : IPerCallHostResolver
     {
         private readonly Dictionary<string, string> _map;
+
+        /// <summary>Initializes a new instance of StaticResolver with a predefined mapping.</summary>
+        /// <param name="map">The mapping of full references to host names.</param>
         public StaticResolver(Dictionary<string, string> map) => _map = map;
+
+        /// <summary>Resolves a host name from the static mapping.</summary>
+        /// <param name="fullReference">The full reference to resolve.</param>
         public string ResolveHost(string fullReference) =>
             _map.TryGetValue(fullReference, out var host) ? host : string.Empty;
     }
 
+    /// <summary>Verifies that a dead PLC does not open the breaker for healthy PLCs when using a per-call resolver.</summary>
     [Fact]
     public async Task DeadPlc_DoesNotOpenBreaker_For_HealthyPlc_With_Resolver()
     {
@@ -59,6 +66,7 @@ public sealed class PerCallHostResolverDispatchTests
         aliveAttempts.ShouldBe(1, "decision #144 — per-PLC isolation keeps healthy PLCs serving");
     }
 
+    /// <summary>Verifies that empty string from resolver is treated as single-host fallback.</summary>
     [Fact]
     public void Resolver_EmptyString_Treated_As_Single_Host_Fallback()
     {
@@ -71,6 +79,7 @@ public sealed class PerCallHostResolverDispatchTests
         resolver.ResolveHost("not-in-map").ShouldBe("", "unknown refs return empty so dispatch falls back to single-host");
     }
 
+    /// <summary>Verifies that without a resolver, the same host shares one resilience pipeline.</summary>
     [Fact]
     public async Task WithoutResolver_SameHost_Shares_One_Pipeline()
     {
@@ -88,6 +97,7 @@ public sealed class PerCallHostResolverDispatchTests
         builder.CachedPipelineCount.ShouldBe(1, "single-host drivers share one pipeline");
     }
 
+    /// <summary>Verifies that with a resolver, different hosts get separate resilience pipelines.</summary>
     [Fact]
     public async Task WithResolver_TwoHosts_Get_Two_Pipelines()
     {