docs: complete XML doc coverage (returns, summaries, inheritdoc)

Resolve all 622 issues flagged by the enhanced CommentChecker: add missing
<returns> tags (incl. the standard phrasing on non-generic Task methods),
add missing <summary> tags, and replace misused/redundant <inheritdoc/> on
members that override or implement nothing with real documentation.
Documentation-only — no behavior change; solution builds clean.

src/ZB.MOM.WW.ScadaBridge.CLI/Commands/CliOptions.cs

@@ -17,6 +17,7 @@ internal static class CliOptions
     /// typo (e.g. <c>--format tabel</c>) is rejected with a clear parse error rather
     /// than silently falling through to JSON.
     /// </summary>
+    /// <returns>The configured <c>--format</c> option constrained to "json" or "table".</returns>
     internal static Option<string> CreateFormatOption()
     {
         var formatOption = new Option<string>("--format")