"effect/Function#FunctionN":
  replacement: "Function.FunctionN"
  note: "No call-site migration; v4 keeps the same function shape as a type alias."
"effect/Function#isFunction":
  replacement: "Predicate.isFunction"
  note: "The function refinement moved to Predicate."
"effect/Function#LazyArg":
  replacement: "Function.LazyArg"
  note: "No call-site migration; v4 keeps the same lazy function shape as a type alias."
"effect/Function#unsafeCoerce":
  replacement: "Function.cast"
  note: "Renamed type-only cast; runtime behavior remains identity with no validation."