The store rule that is genuinely about AI lives on Google Play
If you want an explicit AI policy from a store, Google has one. Google Play's AI-Generated Content policy covers apps that create content from user prompts, and names the two obvious shapes: a text to text chatbot where talking to it is a central feature of the app, and images or video generated from text, image or voice prompts. Those apps must comply with the existing developer policies, which includes prohibiting and preventing the generation of restricted content, and they must carry in-app reporting or flagging so a user can report offensive output without leaving the app.
Notice what the policy is about. It regulates what the app generates for its users, not what generated the app. Apple's nearest equivalent is guideline 1.2 on user-generated content, which asks for a way to filter objectionable material, a mechanism to report it, the ability to block abusive users and published contact information. If your app has a prompt box or a chat screen, that list is yours whether you typed the code or described it in a sentence.
Put together, the platform position is consistent and not very dramatic. Neither store asks how the project was written. Both care what it does with a model once real people are typing into it. Add the disclosure guideline 5.1.2 wants, the report and block controls, and a privacy policy that matches what you actually send, and the AI specific part of your submission is finished. The mechanics of the submission itself, the screenshots, the age rating and the review notes, are getting it through and a walkthrough of their own.