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/GalaxyDriver.cs

@@ -129,6 +129,10 @@ public sealed class GalaxyDriver
     /// <inheritdoc />
     public event EventHandler<AlarmEventArgs>? OnAlarmEvent;
 
+    /// <summary>Initializes a new instance of the <see cref="GalaxyDriver"/> class.</summary>
+    /// <param name="driverInstanceId">The unique identifier for this driver instance.</param>
+    /// <param name="options">The Galaxy driver configuration options.</param>
+    /// <param name="logger">Optional logger instance for diagnostics.</param>
     public GalaxyDriver(
         string driverInstanceId,
         GalaxyDriverOptions options,
@@ -145,6 +149,15 @@ public sealed class GalaxyDriver
     ///     <see cref="SubscribeAsync"/> can be exercised against canned data without
     ///     building real gRPC channels.
     /// </summary>
+    /// <param name="driverInstanceId">The unique identifier for this driver instance.</param>
+    /// <param name="options">The Galaxy driver configuration options.</param>
+    /// <param name="hierarchySource">Optional custom hierarchy source for testing.</param>
+    /// <param name="dataReader">Optional custom data reader for testing.</param>
+    /// <param name="dataWriter">Optional custom data writer for testing.</param>
+    /// <param name="subscriber">Optional custom subscriber for testing.</param>
+    /// <param name="alarmAcknowledger">Optional custom alarm acknowledger for testing.</param>
+    /// <param name="alarmFeed">Optional custom alarm feed for testing.</param>
+    /// <param name="logger">Optional logger instance for diagnostics.</param>
     internal GalaxyDriver(
         string driverInstanceId,
         GalaxyDriverOptions options,
@@ -188,6 +201,7 @@ public sealed class GalaxyDriver
     ///     <see cref="GalaxyReconnectOptions.ReplayOnSessionLost"/> branch can be
     ///     asserted deterministically (Driver.Galaxy-013).
     /// </summary>
+    /// <param name="cancellationToken">Cancellation token for the replay operation.</param>
     internal Task InvokeReplayForTestAsync(CancellationToken cancellationToken) =>
         ReplayAsync(cancellationToken);
 
@@ -434,6 +448,7 @@ public sealed class GalaxyDriver
     ///     A future PR can swap any of these arms for a DPAPI-backed lookup without
     ///     changing the call site.
     /// </summary>
+    /// <param name="secretRef">The secret reference string to resolve.</param>
     internal static string ResolveApiKey(string secretRef) => ResolveApiKey(secretRef, logger: null);
 
     /// <summary>
@@ -442,6 +457,8 @@ public sealed class GalaxyDriver
     ///     API key in <c>DriverConfig</c> JSON). The <c>dev:</c> prefix is the explicit
     ///     opt-in path that doesn't warn.
     /// </summary>
+    /// <param name="secretRef">The secret reference string to resolve.</param>
+    /// <param name="logger">Optional logger for warning on cleartext keys.</param>
     internal static string ResolveApiKey(string secretRef, ILogger? logger)
     {
         ArgumentException.ThrowIfNullOrEmpty(secretRef);
@@ -1261,15 +1278,26 @@ public sealed class GalaxyDriver
         System.Collections.Concurrent.ConcurrentDictionary<string, SecurityClassification> map)
         : IAddressSpaceBuilder
     {
+        /// <summary>Creates a folder node and returns a builder for populating it.</summary>
+        /// <param name="browseName">The OPC UA BrowseName of the folder.</param>
+        /// <param name="displayName">The display name for the folder.</param>
         public IAddressSpaceBuilder Folder(string browseName, string displayName)
             => new SecurityCapturingBuilder(inner.Folder(browseName, displayName), map);
 
+        /// <summary>Creates a variable node and captures its security classification.</summary>
+        /// <param name="browseName">The OPC UA BrowseName of the variable.</param>
+        /// <param name="displayName">The display name for the variable.</param>
+        /// <param name="attributeInfo">The driver attribute metadata including security classification.</param>
         public IVariableHandle Variable(string browseName, string displayName, DriverAttributeInfo attributeInfo)
         {
             map[attributeInfo.FullName] = attributeInfo.SecurityClass;
             return inner.Variable(browseName, displayName, attributeInfo);
         }
 
+        /// <summary>Adds a property node to the current parent.</summary>
+        /// <param name="browseName">The OPC UA BrowseName of the property.</param>
+        /// <param name="dataType">The OPC UA data type of the property.</param>
+        /// <param name="value">The property value.</param>
         public void AddProperty(string browseName, DriverDataType dataType, object? value)
             => inner.AddProperty(browseName, dataType, value);
     }