Grinder and Saw hopper blocks replace the Refiner and Stone cutter in the menu (t4)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/sim/machine-tick.js

@@ -45,6 +45,7 @@ function fanBlow(mm, sat) {
   }
 }
 function machinesTick() {
+  procBlocksTick();
   if (powerDirty && tick >= nextPowerBuild) { rebuildPower(); nextPowerBuild = tick + 6; }
   if (brokenMachines.length) {
     const ids = brokenMachines; brokenMachines = [];