>A 500k line codebase for an agent CLI proves one thing: making a probabilistic LLM behave deterministically is a massive state-management nightmare. Right now, they're great for prompting simple sites/platforms but they break at large enterprise repos.

Is that the case? I'm pretty sure Claude Code is one of the most massively successful pieces of software made in the last decade. I don't know how that proves your point. Will this codebase become unmanageable eventually? Maybe, but literally every agent harness out there is just copying their lead at this point.

Claude code is a massively successful generator, I use it all the time, but it's not a governance layer.

The fact that the industry is copying a 500k-line harness is the problem. We're automating security vulnerabilities at scale because people are trying to put the guardrails inside the probabilistic code instead of strictly above it.

Standardizing on half a million lines of defensive spaghetti is a huge liability.