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.FOCAS/FocasHostAddress.cs

@@ -9,10 +9,14 @@ public sealed record FocasHostAddress(string Host, int Port)
     /// <summary>Fanuc-reserved TCP port for FOCAS Ethernet.</summary>
     public const int DefaultPort = 8193;
 
+    /// <inheritdoc />
     public override string ToString() => Port == DefaultPort
         ? $"focas://{Host}"
         : $"focas://{Host}:{Port}";
 
+    /// <summary>Attempts to parse a FOCAS address string.</summary>
+    /// <param name="value">The address string to parse.</param>
+    /// <returns>A parsed address, or null if the string is invalid.</returns>
     public static FocasHostAddress? TryParse(string? value)
     {
         if (string.IsNullOrWhiteSpace(value)) return null;