1. The premise is to see whether the judgment is effective. Because one party appealed, the judgment did not take effect, so it cannot be executed. But according to the principle of no increase in sentence on appeal, your friend’s sentence will definitely still be one year as sentenced. Even if the judgment has not taken effect and the detention period has exceeded the sentence imposed by the first-instance judgment, the judicial authorities should change the criminal coercive measures and change the arrest status to bail pending trial or residential surveillance, and the detention should not continue.
2. If the detention is definitely extended, you can propose to the court measures to change the release of persons, otherwise you will apply for state compensation in the future.