do to formatters

apps/website/lib/formatters/WinRateFormatter.ts

@@ -0,0 +1,12 @@
+export class WinRateFormatter {
+  static calculate(racesCompleted: number, wins: number): string {
+    if (racesCompleted === 0) return '0.0';
+    const rate = (wins / racesCompleted) * 100;
+    return rate.toFixed(1);
+  }
+
+  static format(rate: number | null | undefined): string {
+    if (rate === null || rate === undefined) return '0.0%';
+    return `${rate.toFixed(1)}%`;
+  }
+}