Chrome extension that makes hidden text and prompt injection visible

I was thinking about ways to deal with prompt injection and kept coming back to a pretty simple problem: an AI agent can read things on a webpage that you never actually see. So I built AgentLens. It surfaces hidden content on webpages and flags anything that looks like it might be trying to give instructions to an AI. The idea is pretty simple: if prompt injection is an invisible problem, make it visible. Would be interested to hear how people here are handling this in their own agents, or if there are edge cases I should be testing against. I'll drop the link in the comments.