Territories, states, one level per agent, and what "guarded" is actually allowed to mean.
Territories and states
Every agent, project and server on your machine is a territory.
One level per agent, deliberately
Every apply is per-target. Your inbox-reading agent can be a Housecat — stays home — while a research agent runs Alley Cat — roams its own workspace and tools — and one deliberate risk-taker runs Tiger — hunts, only where you would watch it work.
A fleet is not uniform, and should not be guarded uniformly.
If one agent comes home affected
Its own walls still hold — a profile does not care whether its agent has gone strange, and a compromised Housecat can barely reach anything. Other agents walls do not weaken — every profile is independent; nothing agent A does rewrites agent B's rules.
Guarding agents one by one shrinks the corridors between them.
Honest scope
Proof, not promises
After every apply, the cat attacks its own walls. Trials that ran live are labelled observed; trials that only checked rules against themselves are labelled self-consistency — a weaker claim, labelled as one.
A dated Clean Bill, or an honest list of what did not hold.