message: WIP: Fix fork fiberRef behaviour
diff: @@ -101,7 +101,7 @@ const hasPrinter3 = L.hasProcess("printer-3")<never, void>()
  const metrics = F.unsafeMake(
  { counter: 0 },
  - (a) => a,
  + (_) => ({ counter: 0 }),
  (a, b) => ({ counter: a.counter + b.counter })
  )
  