wip

packages/racing/domain/services/SkillLevelService.ts

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+export type SkillLevel = 'beginner' | 'intermediate' | 'advanced' | 'pro';
+
+/**
+ * Domain service for determining skill level based on rating.
+ * This encapsulates the business rule for skill tier classification.
+ */
+export class SkillLevelService {
+  /**
+   * Map driver rating to skill level band.
+   * Business rule: iRating thresholds determine skill tiers.
+   */
+  static getSkillLevel(rating: number): SkillLevel {
+    if (rating >= 3000) return 'pro';
+    if (rating >= 2500) return 'advanced';
+    if (rating >= 1800) return 'intermediate';
+    return 'beginner';
+  }
+
+  /**
+   * Map average team rating to performance level.
+   * Business rule: Team ratings use higher thresholds than individual drivers.
+   */
+  static getTeamPerformanceLevel(averageRating: number | null): SkillLevel {
+    if (averageRating === null) {
+      return 'beginner';
+    }
+    if (averageRating >= 4500) return 'pro';
+    if (averageRating >= 3000) return 'advanced';
+    if (averageRating >= 2000) return 'intermediate';
+    return 'beginner';
+  }
+}