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.IntegrationTests/AbServerFixture.cs

@@ -31,11 +31,16 @@ public sealed class AbServerFixture : IAsyncLifetime
     // 10.100.0.35 = the shared Docker host (see CLAUDE.md "Docker Workflow"). Migrated
     // off this VM's 127.0.0.1 on 2026-04-28 alongside the rest of the Docker-host move.
     // Override via AB_SERVER_ENDPOINT to point at a real PLC or a locally-running container.
+    /// <summary>Gets the host address of the AB server.</summary>
     public string Host { get; } = "10.100.0.35";
+    /// <summary>Gets the port of the AB server.</summary>
     public int Port { get; } = AbServerProfile.DefaultPort;
 
+    /// <summary>Initializes a new instance of the AbServerFixture class with the default profile.</summary>
     public AbServerFixture() : this(KnownProfiles.ControlLogix) { }
 
+    /// <summary>Initializes a new instance of the AbServerFixture class with the specified profile.</summary>
+    /// <param name="profile">The AB server profile to use.</param>
     public AbServerFixture(AbServerProfile profile)
     {
         Profile = profile ?? throw new ArgumentNullException(nameof(profile));
@@ -50,7 +55,9 @@ public sealed class AbServerFixture : IAsyncLifetime
         }
     }
 
+    /// <inheritdoc />
     public ValueTask InitializeAsync() => ValueTask.CompletedTask;
+    /// <inheritdoc />
     public ValueTask DisposeAsync() => ValueTask.CompletedTask;
 
     /// <summary>
@@ -92,6 +99,7 @@ public sealed class AbServerFixture : IAsyncLifetime
 /// </summary>
 public sealed class AbServerFactAttribute : FactAttribute
 {
+    /// <summary>Initializes a new instance of the AbServerFactAttribute class.</summary>
     public AbServerFactAttribute()
     {
         if (!AbServerFixture.IsServerAvailable())
@@ -109,6 +117,7 @@ public sealed class AbServerFactAttribute : FactAttribute
 /// </summary>
 public sealed class AbServerTheoryAttribute : TheoryAttribute
 {
+    /// <summary>Initializes a new instance of the AbServerTheoryAttribute class.</summary>
     public AbServerTheoryAttribute()
     {
         if (!AbServerFixture.IsServerAvailable())