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.CentralUI/Components/Shared/TriggerAttributeMapper.cs

@@ -19,6 +19,7 @@ public static class TriggerAttributeMapper
 {
     /// <summary>Direct and inherited attributes, exposed as <c>Attributes["..."]</c>.</summary>
     /// <param name="choices">The full flattened attribute choice list from the trigger editor.</param>
+    /// <returns>The list of <see cref="AttributeShape"/>s for Direct and Inherited attributes.</returns>
     public static IReadOnlyList<AttributeShape> SelfAttributes(
         IReadOnlyList<AlarmAttributeChoice> choices) =>
         choices
@@ -32,6 +33,7 @@ public static class TriggerAttributeMapper
     /// are skipped (no child scope to attach them to).
     /// </summary>
     /// <param name="choices">The full flattened attribute choice list from the trigger editor.</param>
+    /// <returns>The list of <see cref="CompositionContext"/>s, one per distinct composition-instance name.</returns>
     public static IReadOnlyList<CompositionContext> Children(
         IReadOnlyList<AlarmAttributeChoice> choices) =>
         choices