feat: More bonus (exponential) and method to list icons needed

public/js/ui/view.js

@@ -1,7 +1,7 @@
 // Main game view. Static markup lives in index.html; this module binds the
 // controls once, builds the generator/upgrade lists, and refreshes the numbers.
 
-import { generatorQuote, isUnlocked, upgradeVisible } from '../engine/engine.js';
+import { generatorQuote, isUnlocked, materialPurchase, upgradeVisible } from '../engine/engine.js';
 import { t } from '../services/i18n.js';
 import { $, h, icon, refreshStaticIcons } from './dom.js';
 
@@ -232,15 +232,16 @@ export function createView(actions) {
 
     setText(el.makeYield, t('ui.makeYield', { amount: fmt.number(d.clickYield) }));
     el.make.disabled = state.material < d.materialPerUnit;
+    const purchase = materialPurchase(state, d); // a partial lot when funds are short
     setText(
       el.buyMaterialInfo,
       t('ui.batchInfo', {
-        amount: fmt.number(d.batchSize),
-        cost: money(d.batchCost),
+        amount: fmt.number(Math.floor(purchase.amount || d.batchSize)),
+        cost: money(purchase.amount ? purchase.cost : d.batchCost),
         trend: TREND[state.materialTrend] ?? '',
       }),
     );
-    el.buyMaterial.disabled = state.funds < d.batchCost;
+    el.buyMaterial.disabled = purchase.amount <= 0;
 
     updateMarket(state, d);
     updateGenerators(state, d);