Resolve all high-severity architecture review findings

src/ZB.MOM.WW.ScadaBridge.InboundAPI/InboundScriptExecutor.cs

@@ -151,6 +151,14 @@ public class InboundScriptExecutor
     /// <param name="methodName">The method name to remove.</param>
     public void RemoveHandler(string methodName) => InvalidateMethod(methodName);
 
+    /// <summary>Checks compilation without publishing or invalidating a live handler.</summary>
+    public bool ValidateCompilation(ApiMethod method, out IReadOnlyList<string> errors)
+    {
+        var (handler, diagnostics) = Compile(method);
+        errors = diagnostics;
+        return handler is not null;
+    }
+
     /// <summary>
     /// Compiles and registers a single API method script. Returns <c>false</c> if the
     /// script is empty, fails Roslyn compilation, or violates the script trust model.