My personal lack of imagination (but I could very much be wrong!) tells me that there's no way to prevent prompt injection without losing the main benefit of ac

My personal lack of imagination (but I could very much be wrong!) tells me that there's no way to prevent prompt injection without losing the main benefit of accepting prompts as input in the first place - If we could enumerate a known whitelist before shipping, then there's no need for prompts, at most it'd be just mapping natural language to user actions within your app.