Turn the Cedar notes into CSV: source_id,item,source_value,source_unit,volume_ml,status.
Preserve source numbers and units literally; C4 source_unit is UNKNOWN.
Conversion map: mL = value; L = value * 1000.
Leave volume_ml empty for a missing or non-volume unit.
Statuses: checked_volume, unit_missing, different_dimension.
Report the known-volume subtotal and excluded IDs. Do not guess units or convert grams to milliliters.