- Liquids step up to 8 cells a tick toward a drop (fewer the thicker they are), and a top-layer
grain looks 4 times as far for one, so pools empty and thin film drains. A 100-wide pool
empties in about 50 s; the old code left 24-650 grains stranded on wide ledges.
- Only a top-layer grain stepping sideways wakes the row ahead, so settled lakes still sleep.
- World generation settles at the old speed: seeds make the same worlds as before.
- Cooled steam under a roof no longer stays steam for ever (its heat area slept).
- Raining clouds keep drifting at half pace and rain over a band either side, so a waterfall into
a hot shaft no longer rains straight back on its own lake.
- New test/t_water.js; t_weather rain-location checks; t_conveyors counts steam in flight;
t_molds seeds the random burning-bed check.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>