A green frame in a Unity 6 tunnel on iPhone, never on the Mac. Five fixes that made sense and changed nothing. Then a measurement, a bisect renderer by renderer, and one checkbox on a torch flame: the particle Lights module, spawning a real-time light on every particle, 150 torches deep. The method, the numbers, and the rules that came out of it, for Unity builders.

One week of AI game development on The Magus, nothing left out. The first full mission chain ran on the phone, from the boy at the fire to the pirates' hideout. Two days went to a bug that never existed, a forge got built on the wrong beach, and a stuck shell cost a morning. What worked, what did not, and what each mistake became in the rules file.