A shift in the prison kitchen. Every one you finish takes five minutes off your sentence.
Each completed shift grants income and profession XP. Both scale with grade. The first 2 shifts/day get a ร1.5 daily streak bonus; stacked shifts decay (ร1.0 โ ร0.9 โ ร0.75 โ ร0.5) and reset after 4 idle hours.
round(span(level) รท 18) - about 18 shifts per level at any grade.120 ร (1 + level ร 0.05)