Humans will need to have visibility into application code, sure, but not likely optimized visibility - compiling and transpiling are good precedents for this. There was(is?) likely an argument to be made that humans need to be able to directly review bytecode or minified JS, but these certainly aren't optimized for humans. I do think there would be some version of an IDE that makes human traversal of a bot-optimized codebase easier, but the more we expect the LLM to do, the more we will need to favor optimizing for the LLM over optimizing for human developers.