fix upload: parse nested message.url, backup retries=1, connect.php auth

siro_driver/lib/controller/auth/syria/registration_controller.dart

@@ -359,11 +359,11 @@ class RegistrationController extends GetxController {
     String link, {
     String? backupLink,
   }) async {
-    const int maxRetries = 3;
-
     final List<String> urlsToTry = [link, if (backupLink != null && backupLink.trim().isNotEmpty) backupLink];
 
-    for (final currentUrl in urlsToTry) {
+    for (int i = 0; i < urlsToTry.length; i++) {
+      final currentUrl = urlsToTry[i];
+      final maxRetries = (i == 0) ? 3 : 1; // 3 attempts for primary, 1 for backup
       for (int attempt = 1; attempt <= maxRetries; attempt++) {
         try {
           final uri = Uri.parse(currentUrl);
@@ -399,7 +399,15 @@ class RegistrationController extends GetxController {
           }
 
           final body = jsonDecode(res.body);
-          final String? url = body['url'] ??
+          String? url;
+          // بعض السيرفرات تعيد الرابط داخل message
+          if (body['message'] is Map) {
+            url = body['message']['url'] ??
+                body['message']['file_link'] ??
+                body['message']['image_url'];
+          }
+          // وإلا حاول من الجذر
+          url ??= body['url'] ??
               body['file_link'] ??
               body['image_url'] ??
               (body['data'] is Map ? body['data']['url'] : null);