pub fn install_event_ring(cap: usize)Expand description
Install the bounded event ring with capacity cap. Called once by the
supervisor when the served agentd://events resource is wanted (gated by
--serve-mcp plus the events feature at the call site). Idempotent — a
second call resizes and clears. Never fatal: telemetry must not crash the
run, so a poisoned lock is recovered rather than propagated.