WorkCenterTwinState

"""
The live shadow's judgement of a running operation, or the most severe one across a work centre; STEADY and SLOWING belong to the pace track
"""
enum WorkCenterTwinState {
  """Nothing is running on the work centre"""
  IDLE
  """
  Elapsed time and pace are within what the profile expects for this work
  """
  ON_TRACK
  """
  Elapsed time is past the drifting quantile, or the pace-projected finish overshoots the plan by more than the profile's spread
  """
  DRIFTING
  """
  In SETUP or RUNNING with no progress point for longer than the stall window
  """
  STALLED
  """The machine reported PAUSED; no judgement, the clock keeps running"""
  PAUSED
  """The machine's status is DOWN or ERROR"""
  DOWN
  """
  DOWN or ERROR for longer than the profile's repair expectation or the work centre's override
  """
  DOWN_OVERDUE
  """
  The profile has no cell for this work at any depth, so no judgement is possible
  """
  UNCALIBRATED
  """
  Transition target only: the operation stopped reporting; closes its history
  """
  ENDED
  """
  Pace track only: the forecast pace is within the work centre's band of its own history
  """
  STEADY
  """
  Pace track only: the forecast pace is slower than the machine's own history by at least twinPaceSlowingPercent; back to STEADY at half that
  """
  SLOWING
}