A LITTLE WATER. A LITTLE SUN. A LITTLE FORESIGHT.
Make the most of the light.
Warm the brine. Rake the salt. Bring home both before sunset.

A day at the saltworks
Each action uses one sunlight slot. Warm evaporates 1, 2 or 3 water drops, as shown in the forecast. Every evaporated drop becomes fresh water.
As brine concentrates, one salt crystal forms when the remaining water is at most twice the dissolved salt. Drying a pan crystallizes all its remaining salt. Two or more crystals block the wick. Rake to collect all crystals and clear it.
Meet both the water and salt order before the forecast runs out. Raking on a cloudy slot saves stronger sun for warming. Undo freely. Keys 1/2/3 warm pans; Q/W/E rake them; Z undoes.
This is a small invented strategy model, inspired by solar brine recovery research; quantities are game units.