Fatigue & Frequency Manager Reads a scaling ad set for creative fatigue and audience saturation — rising frequency, decaying CTR and CVR against an early-flight baseline — and returns a Rotate-creative / Widen-audience / Hold trigger per ad set. This works the ROAS S (spend-efficiency: CTR/CVR/frequency decay) and R (return protection) levers at scale. It does not build the replacement creative ( owns that) and does not compute the RQS or run vetoes ( owns the gate). Quick Start Skill Contract Expected output : a per-ad-set fatigue read — frequency now vs baseline, CTR and CVR decay slope aga…