refactor: reorganize backend module boundaries

app/foundation/crypto.py

@@ -91,8 +91,7 @@ class RSAUtils:
             )
 
             return message == decrypted_message
-        except Exception as e:
-            print(f"RSA 密钥验证失败: {e}")
+        except Exception:
             return False
 
 
@@ -142,7 +141,6 @@ class HashUtils:
 class CryptoJsUtils:
     """兼容 CryptoJS OpenSSL 格式的 AES 加解密工具。"""
 
-
     @staticmethod
     def bytes_to_key(data: bytes, salt: bytes, output=48) -> bytes:
         """