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.TemplateEngine/Validation/SemanticValidator.cs

@@ -25,6 +25,8 @@ public class SemanticValidator
     /// </summary>
     /// <param name="configuration">The flattened configuration to validate.</param>
     /// <param name="sharedScripts">Shared scripts available for CallShared references.</param>
+    /// <param name="alarmCapableConnectionNames">Connection names that support alarm subscriptions; used to validate native alarm source bindings.</param>
+    /// <returns>A <see cref="ValidationResult"/> containing all semantic errors and warnings found.</returns>
     public ValidationResult Validate(
         FlattenedConfiguration configuration,
         IReadOnlyList<ResolvedScript>? sharedScripts = null,
@@ -288,6 +290,7 @@ public class SemanticValidator
     /// Parses a parameter definitions JSON string (JSON Schema or legacy flat array) and returns the declared parameter names.
     /// </summary>
     /// <param name="parameterDefinitionsJson">JSON Schema or legacy flat-array string; null/empty returns an empty list.</param>
+    /// <returns>The list of parameter names declared in the definition.</returns>
     internal static List<string> ParseParameterDefinitions(string? parameterDefinitionsJson)
     {
         if (string.IsNullOrWhiteSpace(parameterDefinitionsJson))
@@ -325,6 +328,7 @@ public class SemanticValidator
     /// Looks for CallScript("name", ...) and CallShared("name", ...) patterns.
     /// </summary>
     /// <param name="code">The script source code to scan.</param>
+    /// <returns>The list of call targets found (both <c>CallScript</c> and <c>CallShared</c> invocations).</returns>
     internal static List<CallTarget> ExtractCallTargets(string code)
     {
         var results = new List<CallTarget>();