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/Drivers/ZB.MOM.WW.OtOpcUa.Driver.Galaxy/Health/HostConnectivityForwarder.cs

@@ -27,6 +27,10 @@ public sealed class HostConnectivityForwarder : IDisposable
     private readonly ILogger _logger;
     private bool _disposed;
 
+    /// <summary>Initializes a new instance of HostConnectivityForwarder with the given client name, aggregator, and optional logger.</summary>
+    /// <param name="clientName">The client name for the MxAccess connection.</param>
+    /// <param name="aggregator">The host status aggregator to push connectivity state to.</param>
+    /// <param name="logger">The optional logger for diagnostic messages.</param>
     public HostConnectivityForwarder(string clientName, HostStatusAggregator aggregator, ILogger? logger = null)
     {
         ArgumentException.ThrowIfNullOrWhiteSpace(clientName);
@@ -39,6 +43,7 @@ public sealed class HostConnectivityForwarder : IDisposable
     ///     Push a transport state into the aggregator. Idempotent at the aggregator layer —
     ///     repeated calls with the same state don't fan out duplicate transitions.
     /// </summary>
+    /// <param name="state">The host connectivity state to push.</param>
     public void SetTransport(HostState state)
     {
         ObjectDisposedException.ThrowIf(_disposed, this);
@@ -49,6 +54,7 @@ public sealed class HostConnectivityForwarder : IDisposable
             _clientName, state);
     }
 
+    /// <summary>Disposes the forwarder and marks it as disposed.</summary>
     public void Dispose()
     {
         // No-op today; reserved for the eventual gw-6 StreamSessionHealth consumer that