Fix: update destination limits to 3 and sync with Redis

siro_driver/lib/controller/functions/encrypt_decrypt.dart

@@ -46,6 +46,15 @@ class EncryptionHelper {
     debugPrint("EncryptionHelper initialized successfully.");
   }
 
+  /// Encrypts a string using AES-256-CBC with constant IV (deterministic)
+  /// Same input always produces the same output
+  String encryptDataCbc(String plainText) {
+    final cbcEncrypter =
+        encrypt.Encrypter(encrypt.AES(key, mode: encrypt.AESMode.cbc));
+    final encrypted = cbcEncrypter.encrypt(plainText, iv: iv);
+    return encrypted.base64;
+  }
+
   /// ✅ FIX H-04: Encrypts a string using AES-256-GCM with a random IV
   /// Format: "GCM:<base64_iv>:<base64_ciphertext>"
   String encryptData(String plainText) {