02 · FIRST_KEY

All agents passed.
The system failed.

Three agents and one rule: nothing executes without the owner’s grant. The engine tries every order in which they can act.

1. 1 Run the world as it is
2. 2 Find the counterexample
3. 3 Break the premise
4. 4 Re-verify
5. 5 Push the boundary

A toy model that runs in your browser now: every interleaving is enumerated (engine toy-0.1). It shows two ideas: who may hand authority on, and where a guarantee stops under concurrency. It is not a proof, and the FIRST_KEY verification engine is not built yet.