feat: interactive SSH auth choice (key with passphrase, password via sshpass, or temp ed25519); fix missing do_transfer call for password path

source/source.py

@@ -378,8 +378,6 @@ def do_transfer_offer():
 
     if key_path:
         state.set_stage("TRANSFER", target_host=host, target_user=user, target_port=port_int, ssh_key=key_path)
-        from transfer.transfer import do_transfer
-        do_transfer()
     else:
         # Нет SSH-ключа — спрашиваем пароль и пробуем sshpass
         password = prompt(f"Введите пароль для {user}@{host} (или Enter для отмены)")
@@ -392,5 +390,6 @@ def do_transfer_offer():
             state.set_error("ssh_key_setup", "", "sshpass не найден и не удалось установить", suggestion="Установите sshpass: apt-get install -y sshpass")
             raise RuntimeError("sshpass не найден. Установите: apt-get install -y sshpass")
         state.set_stage("TRANSFER", target_host=host, target_user=user, target_port=port_int, ssh_key=None, ssh_password=password)
-        from transfer.transfer import do_transfer
-        do_transfer()
+
+    from transfer.transfer import do_transfer
+    do_transfer()