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/Runtime/MxValueEncoder.cs

@@ -13,6 +13,10 @@ namespace ZB.MOM.WW.OtOpcUa.Driver.Galaxy.Runtime;
 /// </summary>
 internal static class MxValueEncoder
 {
+    /// <summary>Encodes a CLR value as an MxValue for transmission to the gateway.</summary>
+    /// <param name="value">The value to encode, or null for a null MxValue.</param>
+    /// <returns>An MxValue instance representing the encoded value.</returns>
+    /// <exception cref="ArgumentException">Thrown if the value type is not supported.</exception>
     public static MxValue Encode(object? value)
     {
         if (value is null) return new MxValue { IsNull = true };