fix issues

core/identity/domain/services/AdminTrustRatingCalculator.test.ts

@@ -396,7 +396,7 @@ describe('AdminTrustRatingCalculator', () => {
       ];
 
       const delta = AdminTrustRatingCalculator.calculateTotalDelta(voteInputs, systemInputs);
-      expect(delta.value).toBe(8); // 15 (vote) + 5 (SLA) + (-10) (reversal) = 10
+      expect(delta.value).toBe(10); // 15 (vote) + 5 (SLA) + (-10) (reversal) = 10
     });
 
     it('should handle empty inputs', () => {

core/identity/domain/services/RatingEventFactory.ts

@@ -596,8 +596,12 @@ export class RatingEventFactory {
     startPosition: number,
     fieldStrength: number
   ): number {
+    // Handle edge cases where data might be inconsistent
+    // If totalDrivers is less than position, use position as totalDrivers for calculation
+    const effectiveTotalDrivers = Math.max(totalDrivers, position);
+    
     // Base score from position (reverse percentile)
-    const positionScore = ((totalDrivers - position + 1) / totalDrivers) * 100;
+    const positionScore = ((effectiveTotalDrivers - position + 1) / effectiveTotalDrivers) * 100;
 
     // Bonus for positions gained
     const positionsGained = startPosition - position;