Agentic Fungi: How I Learned to Grow a Fleet of AI Strains

I grow mushrooms for farmers markets. I built a fleet of AI agents to run the business so I could get back to the mushrooms, and I have never touched more computer in my life.This is the log of that - what I built, what it cost, and every place it told me something confident and wrong.Agar plates and grain spawn on one bench; a control plane, a signed execution path and an encrypted object store on the other. They turn out to be the same trade. You do not command a living thing. You give it the conditions it needs, keep everything else out, and let it do what it already knows how to do.Book Three of the PARACODING series is a grow log, not a manual. It was written while the farm was running, not afterwards from memory. Where this book says a thing is switched off, I did not read that off a design document and I did not ask the system what it thought it was doing. I opened it. A lot of what is in here came out of that gap - what the system said about itself and what it actually did were two different things. You only find those by hand.Inside: what a strain actually is, and why one jar cannot be four species. Sterile technique for systems that hold real credentials. The label on the jar - and the oldest failure on the farm, which is that a label is accurate the day it is written and has no way of finding out it has become a lie. What still holds when somebody takes the jars. And the morning of the flush.The specifics are in the back. Every control, with a note on whether it refuses a thing or only writes it down. Every finding, including the ones I never closed.Glove up, it's time to grow.