Are there definitive legal texts from the Qur’an and Sunnah that prove a wife’s work for her husband is a religious obligation and not a voluntary act on her part?

The relied-upon position in this matter is what came in fatwas number 36364 and 109589, which contain the words of the scholars and their proofs. If there were an explicit text that was not contradicted, they would not have differed concerning it. And Allah knows best.