“The fix was giving each copy its own file with its own name on it. Then at the end of July, two copies started up under the same name, and one overwrote the other's draft again. So naming them wasn't enough. Each name has to be unique.”

A second-order collision: isolation by name fails when agent identity can be duplicated by concurrent starts. Per-agent scoping only works if identity allocation is atomic. Related to bd claim races already on file. The commenter's reply (names from model-driven generation can converge) is speculative.