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.AbCip/CipTemplateObjectDecoder.cs

@@ -46,6 +46,8 @@ public static class CipTemplateObjectDecoder
     ///     Decode the raw Template Object blob. Returns <c>null</c> when the header indicates
     ///     zero members or the buffer is too short to hold the fixed header.
     /// </summary>
+    /// <param name="buffer">The raw Template Object buffer to decode.</param>
+    /// <returns>An AbCipUdtShape describing the structure, or null if decoding fails.</returns>
     public static AbCipUdtShape? Decode(byte[] buffer)
     {
         ArgumentNullException.ThrowIfNull(buffer);
@@ -105,6 +107,8 @@ public static class CipTemplateObjectDecoder
     ///     the null byte after each semicolon is optional padding per Rockwell's string
     ///     encoding convention. Stops at a trailing null / end of buffer.
     /// </summary>
+    /// <param name="span">The byte span containing semicolon-terminated strings.</param>
+    /// <returns>List of parsed strings, one per name in the span.</returns>
     internal static List<string> ParseSemicolonTerminatedStrings(ReadOnlySpan<byte> span)
     {
         var result = new List<string>();