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

backend/UniVerse.Api.Tests/Gamification/GamificationServiceTests.cs

@@ -1,5 +1,4 @@
 using Microsoft.EntityFrameworkCore;
-using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Logging.Abstractions;
 using NSubstitute;
 using UniVerse.Application.DTOs.Notifications;
@@ -18,6 +17,7 @@ public class GamificationServiceTests
     public async Task CheckAndAwardAchievementsAsync_AwardsModernConditionsOnce()
     {
         await using var db = CreateDbContext();
+        SeedLevelThresholds(db);
         var service = CreateService(db);
 
         db.Users.Add(new User
@@ -78,6 +78,7 @@ public class GamificationServiceTests
     public async Task CheckAndAwardAchievementsAsync_CountsConsecutiveIsoWeeksAcrossYears()
     {
         await using var db = CreateDbContext();
+        SeedLevelThresholds(db);
         var service = CreateService(db);
 
         db.Users.Add(new User { Id = 1, Email = "student@test.local" });
@@ -98,6 +99,38 @@ public class GamificationServiceTests
         Assert.True(await db.UserAchievements.AnyAsync(ua => ua.UserId == 1 && ua.AchievementId == 1001));
     }
 
+    [Theory]
+    [InlineData(0, 1)]
+    [InlineData(99, 1)]
+    [InlineData(100, 2)]
+    [InlineData(299, 2)]
+    [InlineData(300, 3)]
+    public async Task CalculateLevelAsync_UsesDatabaseThresholds(int xp, int expectedLevel)
+    {
+        await using var db = CreateDbContext();
+        SeedLevelThresholds(db);
+        var service = CreateService(db);
+
+        var level = await service.CalculateLevelAsync(xp);
+
+        Assert.Equal(expectedLevel, level);
+    }
+
+    [Theory]
+    [InlineData(120, 100, 300)]
+    [InlineData(350, 300, null)]
+    public async Task GetLevelProgressAsync_ReturnsCurrentAndNextThresholds(int xp, int currentLevelXp, int? nextLevelXp)
+    {
+        await using var db = CreateDbContext();
+        SeedLevelThresholds(db);
+        var service = CreateService(db);
+
+        var progress = await service.GetLevelProgressAsync(xp);
+
+        Assert.Equal(currentLevelXp, progress.CurrentLevelXp);
+        Assert.Equal(nextLevelXp, progress.NextLevelXp);
+    }
+
     private static AppDbContext CreateDbContext()
     {
         var options = new DbContextOptionsBuilder<AppDbContext>()
@@ -119,16 +152,16 @@ public class GamificationServiceTests
         notifications.SendAsync(Arg.Any<NotificationMessage>(), Arg.Any<CancellationToken>())
             .Returns(Task.CompletedTask);
 
-        var configuration = new ConfigurationBuilder()
-            .AddInMemoryCollection(new Dictionary<string, string?>
-            {
-                ["Gamification:XpThresholds:0"] = "0",
-                ["Gamification:XpThresholds:1"] = "100",
-                ["Gamification:XpThresholds:2"] = "300"
-            })
-            .Build();
+        return new GamificationService(db, notifications, NullLogger<GamificationService>.Instance);
+    }
 
-        return new GamificationService(db, configuration, notifications, NullLogger<GamificationService>.Instance);
+    private static void SeedLevelThresholds(AppDbContext db)
+    {
+        db.LevelThresholds.AddRange(
+            new LevelThreshold { Level = 1, RequiredXp = 0 },
+            new LevelThreshold { Level = 2, RequiredXp = 100 },
+            new LevelThreshold { Level = 3, RequiredXp = 300 });
+        db.SaveChanges();
     }
 
     private static Achievement Achievement(int id, string name, string condition, int coinReward) => new()