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.

src/Client/ZB.MOM.WW.OtOpcUa.Client.Shared/Adapters/DefaultApplicationConfigurationFactory.cs

@@ -12,6 +12,9 @@ internal sealed class DefaultApplicationConfigurationFactory : IApplicationConfi
 {
     private static readonly ILogger Logger = Log.ForContext<DefaultApplicationConfigurationFactory>();
 
+    /// <summary>Creates an OPC UA application configuration from the provided connection settings.</summary>
+    /// <param name="settings">The connection settings to use.</param>
+    /// <param name="ct">Token to cancel the operation.</param>
     public async Task<ApplicationConfiguration> CreateAsync(ConnectionSettings settings, CancellationToken ct)
     {
         // Resolve the canonical PKI path lazily on first use so constructing a

src/Client/ZB.MOM.WW.OtOpcUa.Client.Shared/Adapters/DefaultEndpointDiscovery.cs

@@ -11,6 +11,10 @@ internal sealed class DefaultEndpointDiscovery : IEndpointDiscovery
 {
     private static readonly ILogger Logger = Log.ForContext<DefaultEndpointDiscovery>();
 
+    /// <summary>Selects an OPC UA endpoint matching the requested security mode.</summary>
+    /// <param name="config">The application configuration.</param>
+    /// <param name="endpointUrl">The endpoint URL to query.</param>
+    /// <param name="requestedMode">The requested message security mode.</param>
     public EndpointDescription SelectEndpoint(ApplicationConfiguration config, string endpointUrl,
         MessageSecurityMode requestedMode)
     {

src/Client/ZB.MOM.WW.OtOpcUa.Client.Shared/Adapters/DefaultSessionFactory.cs

@@ -11,6 +11,14 @@ internal sealed class DefaultSessionFactory : ISessionFactory
 {
     private static readonly ILogger Logger = Log.ForContext<DefaultSessionFactory>();
 
+    /// <summary>Creates a new OPC UA session.</summary>
+    /// <param name="config">The OPC UA application configuration.</param>
+    /// <param name="endpoint">The endpoint description to connect to.</param>
+    /// <param name="sessionName">The name for the session.</param>
+    /// <param name="sessionTimeoutMs">The session timeout in milliseconds.</param>
+    /// <param name="identity">The user identity for the session.</param>
+    /// <param name="ct">The cancellation token.</param>
+    /// <returns>An adapter wrapping the created session.</returns>
     public async Task<ISessionAdapter> CreateSessionAsync(
         ApplicationConfiguration config,
         EndpointDescription endpoint,

src/Client/ZB.MOM.WW.OtOpcUa.Client.Shared/Adapters/IApplicationConfigurationFactory.cs

@@ -11,5 +11,7 @@ internal interface IApplicationConfigurationFactory
     /// <summary>
     ///     Creates a validated ApplicationConfiguration for the given connection settings.
     /// </summary>
+    /// <param name="settings">The connection settings to configure.</param>
+    /// <param name="ct">Cancellation token for the operation.</param>
     Task<ApplicationConfiguration> CreateAsync(ConnectionSettings settings, CancellationToken ct = default);
 }

src/Client/ZB.MOM.WW.OtOpcUa.Client.Shared/Adapters/IEndpointDiscovery.cs

@@ -11,6 +11,9 @@ internal interface IEndpointDiscovery
     ///     Discovers endpoints at the given URL and returns the best match for the requested security mode.
     ///     Also rewrites the endpoint URL hostname to match the requested URL when they differ.
     /// </summary>
+    /// <param name="config">The OPC UA application configuration.</param>
+    /// <param name="endpointUrl">The endpoint URL to discover.</param>
+    /// <param name="requestedMode">The requested message security mode.</param>
     EndpointDescription SelectEndpoint(ApplicationConfiguration config, string endpointUrl,
         MessageSecurityMode requestedMode);
 }