K&R C is underspecified. And anyone who whines about AI code quality? Hold my beer, look at our 1980's source.
I routinely have a task manager feed eight parallel Claude Code Opus 4 sessions their next source file to study for a specific purpose, to get through all 57 faster. That will hit my $200 Max limit, reliably.
Of course I should just wait a year, and AI will read the code base all at once. People _talk_ like it does now. It doesn't. Filtering information is THE critical issue for managing AI in 2025.
The most useful tool I've written to support this effort is a tmux interface, so AI and I can debug together two terminal sessions at once: The old 32-bit code running on a Linode instance, and the new 64-bit code running locally on macOS. I wasn't happy with how the tools for this worked, that I could find online. It blows my mind to watch Opus 4 debug.
You could even take it a step further for extra safety: the door handle could have a slot that requires a specifically shaped piece of metal to be inserted. Only a piece of metal with the correct shape would allow the lock to be opened.