Sounds like OP has multiple org accounts with Anthropic.

The main one in the story (disabled) is banned because iterating on claude.md files looks a lot like iterating on prompt injections, especially as it sounds the multiple Claude's got into it with each other a bit

The other org sounds like the primary account with all the important stuff. Good on OP for doing this work in a separate org, a good recommendation across a lot of vendors and products.