Agent Circuit Breakers

Per-AgentRole circuit breakers. Closed = healthy; Open = refusing calls until ResetTimeout; HalfOpen = single probe in flight (transient — typically invisible to a snapshot view).

State is in-memory; host restart resets every breaker to Closed.

Refresh
No breakers created No circuit breakers have been created yet. Breakers are lazy-created on first invocation per AgentRole.