fix: перенёс уровни в бд и пофиксид их отображение на фронте

backend/UniVerse.Application/DTOs/Gamification/GamificationDtos.cs

@@ -11,3 +11,8 @@ public record CoinTransactionDto(
     string? Description,
     DateTime CreatedAt
 );
+
+public record LevelProgressDto(
+    int CurrentLevelXp,
+    int? NextLevelXp
+);

backend/UniVerse.Application/DTOs/Users/UserDtos.cs

@@ -22,7 +22,9 @@ public record UserStatsDto(
     int Xp,
     int Coins,
     int Level,
-    int AchievementsCount
+    int AchievementsCount,
+    int CurrentLevelXp,
+    int? NextLevelXp
 );
 
 public record UpdateUserRequest(

backend/UniVerse.Application/Interfaces/IGamificationService.cs

@@ -10,7 +10,8 @@ public interface IGamificationService
     Task AwardCoinsAsync(int userId, int amount, CoinTransactionType type,
         int? reviewId = null, int? achievementId = null, string? description = null);
     Task CheckAndAwardAchievementsAsync(int userId);
-    int CalculateLevel(int xp);
+    Task<int> CalculateLevelAsync(int xp);
+    Task<LevelProgressDto> GetLevelProgressAsync(int xp);
     Task<List<UserAchievementDto>> GetUserAchievementsAsync(int userId);
     Task<PagedResult<CoinTransactionDto>> GetTransactionsAsync(int userId, PaginationRequest pagination);
 }