I also don't see how this requires heuristics, but usecases do exist; eg I set `CLAUDE`, so that a git hook can mark vibe commits -- a prompt would be a waste o

I also don't see how this requires heuristics, but usecases do exist; eg I set `CLAUDE`, so that a git hook can mark vibe commits -- a prompt would be a waste of tokens and would introduce non-determinism, and MCP is yet another dependency that can get ignored in favour of the CLI equivalent anyway.