udmodz0/udwha ? reverse-engineered prompt

Build me a simple update message and alert system that can show different update notices depending on the app version or channel.

I want it to support a few separate message files in JSON and plain text, with versions for things like general, plus, and other variants, and make it easy to swap the text shown to users. It should be able to load the right message, display a friendly alert dialog, and handle different languages if needed.

Keep it lightweight and straightforward, with sensible defaults so I can just drop in new message content later. If you need to, look up current docs online for whatever format you think fits best.