Convert Spa.action property to Spa.action() method

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Co-Authored-By: Claude <noreply@anthropic.com>

docs/CLAUDE.dist.md

@@ -332,8 +332,8 @@ Rsx::Route('Contacts_View_Action', 123)  // /contacts/123
 
 ```javascript
 Spa.dispatch('/contacts/123');  // Programmatic navigation
-Spa.layout   // Current layout instance
-Spa.action   // Current action instance
+Spa.layout     // Current layout instance
+Spa.action()   // Current action instance
 ```
 
 ### URL Parameters