Back off dispatch before the host starves the agentSlow-act strikes cluster between 72% and 88% host CPU, but the scheduler onlystarted shedding workers at 88%, so the guard sat above the band doing thedamage. High moves to 78% and critical to 88%.The reference model already spends 260.8ms of the per-step budget, leaving under2x headroom, so the budget goes to 0.600s.