do to formatters

apps/website/lib/formatters/LeagueTierFormatter.ts

@@ -0,0 +1,39 @@
+/**
+ * LeagueTierDisplay
+ * 
+ * Deterministic display logic for league tiers.
+ */
+
+export interface LeagueTierDisplayData {
+  color: string;
+  bgColor: string;
+  border: string;
+  icon: string;
+}
+
+export class LeagueTierFormatter {
+  private static readonly CONFIG: Record<string, LeagueTierDisplayData> = {
+    premium: { 
+      color: 'text-yellow-400', 
+      bgColor: 'bg-yellow-500/10', 
+      border: 'border-yellow-500/30', 
+      icon: '⭐' 
+    },
+    standard: { 
+      color: 'text-primary-blue', 
+      bgColor: 'bg-primary-blue/10', 
+      border: 'border-primary-blue/30', 
+      icon: '🏆' 
+    },
+    starter: { 
+      color: 'text-gray-400', 
+      bgColor: 'bg-gray-500/10', 
+      border: 'border-gray-500/30', 
+      icon: '🚀' 
+    },
+  };
+
+  static getDisplay(tier: 'premium' | 'standard' | 'starter'): LeagueTierDisplayData {
+    return this.CONFIG[tier];
+  }
+}