refactor

core/racing/domain/value-objects/MembershipFee.ts

@@ -33,10 +33,6 @@ export class MembershipFee implements IValueObject<MembershipFeeProps> {
       throw new RacingDomainValidationError('MembershipFee amount is required');
     }
 
-    if (amount.amount < 0) {
-      throw new RacingDomainValidationError('MembershipFee amount cannot be negative');
-    }
-
     return new MembershipFee({ type, amount });
   }
 
@@ -62,29 +58,15 @@ export class MembershipFee implements IValueObject<MembershipFeeProps> {
   }
 
   /**
-   * Check if this is a recurring fee
-   */
-  isRecurring(): boolean {
-    return this.type === 'monthly';
-  }
+    * Check if this is a recurring fee
+    */
+   isRecurring(): boolean {
+     return this.type === 'monthly';
+   }
 
-  equals(other: IValueObject<MembershipFeeProps>): boolean {
-    const a = this.props;
-    const b = other.props;
-    return a.type === b.type && a.amount.equals(b.amount);
-  }
-
-  /**
-   * Get display name for fee type
-   */
-  getDisplayName(): string {
-    switch (this.type) {
-      case 'season':
-        return 'Season Fee';
-      case 'monthly':
-        return 'Monthly Subscription';
-      case 'per_race':
-        return 'Per-Race Fee';
-    }
-  }
+   equals(other: IValueObject<MembershipFeeProps>): boolean {
+     const a = this.props;
+     const b = other.props;
+     return a.type === b.type && a.amount.equals(b.amount);
+   }
 }