Update to Kreel

{
  "name": "kreel-creative-fatigue-check",
  "description": "Detect creative fatigue on active Meta ads.",
  "included_files": [],
  "skill_md_contents": "---\nname: kreel-creative-fatigue-check\ndescription: \"Detect creative fatigue on active Meta ads.\"\n---\n\nIf more than one brand is reachable, call `list_brands` first and pass `brand` on every call.\n\nCheck for creative fatigue. Use `get_creatives` with platform='meta', date_range={\"days\": 30}, filters={\"status\": \"ACTIVE\"}. Each creative's `fatigue` block carries window scalars (hook_rate, hold_rate, ctr) and a first-half-vs-second-half `trend` for ctr, hook_rate, and frequency. Flag a creative when its frequency trend is rising or its CTR/hook-rate trend is falling (delta_pct down >20%). Frequency is trend-only — there is no cumulative frequency scalar (ADR-0007).\n"
}