docs: complete XML doc comments via fixdocs (2757 to 131 findings)

Add missing <returns>/<param>/<summary>/<typeparam> tags and clean up
misused inheritdoc across 481 files so the documented API surface is
complete. Documentation-only (zero code lines changed). The 131 remaining
findings are inheritdoc-style warnings deliberately left to preserve
hand-written implementation rationale (plan-decision notes, race-condition
explanations).

src/Drivers/Cli/ZB.MOM.WW.OtOpcUa.Driver.TwinCAT.Cli/Commands/BrowseCommand.cs

@@ -90,6 +90,7 @@ public sealed class BrowseCommand : TwinCATCommandBase
     /// </summary>
     /// <param name="source">The source collection to filter.</param>
     /// <param name="prefix">The prefix to filter on, or null to keep everything.</param>
+    /// <returns>A filtered list of variables whose browse names start with the given prefix.</returns>
     internal static List<(string BrowseName, DriverAttributeInfo Info)> FilterByPrefix(
         IReadOnlyList<(string BrowseName, DriverAttributeInfo Info)> source, string? prefix)
         => source
@@ -102,6 +103,7 @@ public sealed class BrowseCommand : TwinCATCommandBase
     /// </summary>
     /// <param name="matchedCount">The number of matched items.</param>
     /// <param name="max">The maximum number to show, or 0 for unbounded.</param>
+    /// <returns>The effective print limit: <paramref name="matchedCount"/> when unbounded, otherwise the lesser of <paramref name="max"/> and <paramref name="matchedCount"/>.</returns>
     internal static int PrintLimit(int matchedCount, int max)
         => max <= 0 ? matchedCount : Math.Min(max, matchedCount);
 
@@ -112,6 +114,7 @@ public sealed class BrowseCommand : TwinCATCommandBase
     ///     authorization is enforced server-side.
     /// </summary>
     /// <param name="info">The attribute info to label.</param>
+    /// <returns>"RO" for view-only attributes; "RW" for all others.</returns>
     internal static string AccessTag(DriverAttributeInfo info)
         => info.SecurityClass == SecurityClassification.ViewOnly ? "RO" : "RW";