change(size-chart): centimeter only (drop cm/inch toggle)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/components/store/SizeChartSection.tsx

@@ -20,11 +20,6 @@ interface SizeChartSectionProps {
   showError?: boolean;
 }
 
-const UNITS: { value: string; label: string }[] = [
-  { value: "cm", label: "سانتی‌متر" },
-  { value: "inch", label: "اینچ" },
-];
-
 export function SizeChartSection({
   value,
   onChange,
@@ -171,26 +166,8 @@ export function SizeChartSection({
             </p>
           )}
 
-          {/* Unit toggle */}
-          <div className="flex items-center justify-between">
-            <span className="text-R12 text-GRAY">واحد اندازه‌گیری</span>
-            <div className="flex overflow-hidden rounded-lg border border-GRAY3">
-              {UNITS.map((u) => (
-                <button
-                  key={u.value}
-                  type="button"
-                  onClick={() => emit({ unit: u.value })}
-                  className={cn(
-                    "px-3 py-1 text-R12 transition-colors cursor-pointer",
-                    unit === u.value
-                      ? "bg-BLACK text-WHITE"
-                      : "bg-WHITE text-BLACK2 hover:bg-WHITE3"
-                  )}
-                >
-                  {u.label}
-                </button>
-              ))}
-            </div>
+          <div className="flex items-center justify-end">
+            <span className="text-R12 text-GRAY">اندازه‌ها به سانتی‌متر</span>
           </div>
 
           {/* Grid */}