fix: handle duplicate component keys in conversion cost recipes

src/lib/game/data/conversion-costs.ts

@@ -39,37 +39,46 @@ function baseElementCost(element: string): ConversionCost {
 
 /** Build a ConversionCost for a composite element (distance 2) */
 function compositeElementCost(element: string, components: string[]): ConversionCost {
+  const costPerComponent = computeComponentCost(2); // 30 each
+  const componentCosts: Record<string, number> = {};
+  for (const c of components) {
+    componentCosts[c] = (componentCosts[c] || 0) + costPerComponent;
+  }
   return {
     element,
     distance: 2,
     rawCost: computeRawCost(2), // 1,000
-    componentCosts: Object.fromEntries(
-      components.map(c => [c, computeComponentCost(2)]), // 30 each
-    ),
+    componentCosts,
   };
 }
 
 /** Build a ConversionCost for an exotic element (distance 3) */
 function exoticElementCost(element: string, components: string[]): ConversionCost {
+  const costPerComponent = computeComponentCost(3); // 40 each
+  const componentCosts: Record<string, number> = {};
+  for (const c of components) {
+    componentCosts[c] = (componentCosts[c] || 0) + costPerComponent;
+  }
   return {
     element,
     distance: 3,
     rawCost: computeRawCost(3), // 10,000
-    componentCosts: Object.fromEntries(
-      components.map(c => [c, computeComponentCost(3)]), // 40 each
-    ),
+    componentCosts,
   };
 }
 
 /** Build a ConversionCost for time (distance 4) */
 function timeElementCost(element: string, components: string[]): ConversionCost {
+  const costPerComponent = computeComponentCost(4); // 50 each
+  const componentCosts: Record<string, number> = {};
+  for (const c of components) {
+    componentCosts[c] = (componentCosts[c] || 0) + costPerComponent;
+  }
   return {
     element,
     distance: 4,
     rawCost: computeRawCost(4), // 100,000
-    componentCosts: Object.fromEntries(
-      components.map(c => [c, computeComponentCost(4)]), // 50 each
-    ),
+    componentCosts,
   };
 }