haku2: add stats + fix crash w uninit vm

static/brush-cost.js

@@ -43,31 +43,22 @@ export class BrushCostGauges extends HTMLElement {
                 label: "Fuel",
             }),
         );
-        this.objectsGauge = this.appendChild(
-            createGauge({
-                className: "objects",
-                iconName: "object",
-                label: "Objects",
-            }),
-        );
         this.memoryGauge = this.appendChild(
             createGauge({
                 className: "memory",
                 iconName: "memory",
-                label: "Bulk memory",
+                label: "Memory",
             }),
         );
 
         this.codeSizeGauge.setValue(0);
         this.fuelGauge.setValue(0);
-        this.objectsGauge.setValue(0);
         this.memoryGauge.setValue(0);
     }
 
     update(stats) {
         this.codeSizeGauge.setValue(stats.astSize, stats.astSizeMax);
         this.fuelGauge.setValue(stats.fuel, stats.fuelMax);
-        this.objectsGauge.setValue(stats.numRefs, stats.numRefsMax);
         this.memoryGauge.setValue(stats.memory, stats.memoryMax);
     }
 }