Deduplicate modifiers in KDS display

Prevents showing the same modifier twice when data has duplicates.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

kds/kds.js

@@ -361,12 +361,20 @@ function renderAllModifiers(modifiers, allItems) {
   collectLeafModifiers(modifiers);
 
   console.log(`  Total leaf modifiers found: ${leafModifiers.length}`);
+
+  // Deduplicate modifiers with the same display text
+  const seen = new Set();
   leafModifiers.forEach(({ mod }) => {
     // Use ItemParentName (the category/template name) if available, otherwise just show the item name
     // This gives us "Drink Choice: Coke" instead of "Double Double Combo: Coke"
     const displayText = mod.ItemParentName
       ? `${mod.ItemParentName}: ${mod.ItemName}`
       : mod.ItemName;
+
+    // Skip duplicates
+    if (seen.has(displayText)) return;
+    seen.add(displayText);
+
     html += `<div class="modifier">+ ${escapeHtml(displayText)}</div>`;
   });