Is the husband considered unjust and in violation of the hadith "no divorce without harm" if he divorces his wife after four months of marriage due to her addiction to masturbation, lying, and betrayal of trust, even though he married her for her religiosity?

You are not being unjust to this woman, and there is no blame upon you for divorcing her, because divorce is permissible when there is a need for it due to a woman's bad character, poor companionship, and the harm she causes. However, there is a prohibition against a woman seeking divorce without a valid reason, based on the Prophet's (peace be upon him) saying: "Any woman who asks her husband for divorce without a sound reason, the scent of Paradise will be forbidden to her."