Fix step 5 ConfigGenerator call and add generateAndApply static helper

src/ConfigGenerator.php

@@ -20,6 +20,15 @@ class ConfigGenerator
 
     public function __construct(private PDO $db) {}
 
+    /**
+     * Helper statique pour générer et appliquer toutes les configurations Asterisk.
+     */
+    public static function generateAndApply(PDO $db): array
+    {
+        $generator = new self($db);
+        return $generator->writeAllConfigs();
+    }
+
     /**
      * Génère le contenu complet de /etc/asterisk/pjsip.custom.conf
      */