Add npm man page, --clean flag for bundle:compile, fix subclass checks

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

app/RSpade/Integrations/Scss/Scss_ManifestModule.php

@@ -276,7 +276,7 @@ class Scss_ManifestModule extends ManifestModule_Abstract
             // Check for JavaScript class extending Component
             if (isset($file_data['extension']) && $file_data['extension'] === 'js' &&
                 isset($file_data['class']) && $file_data['class'] === $class_name &&
-                isset($file_data['extends']) && $file_data['extends'] === 'Component') {
+                \App\RSpade\Core\Manifest\Manifest::js_is_subclass_of($class_name, 'Component')) {
                 $found_match = true;
             }
         }