C# formatting

Endpoints/AuthEndpoints.cs

@@ -15,7 +15,7 @@ public static class AuthEndpoints
 
         group.MapPost("/register", async ([FromBody] RegisterRequest request, HttpContext ctx, AppDbContext db, IConfiguration config) =>
         {
-            var username = request.Username?.Trim();
+            var username = request.Username.Trim();
             if (string.IsNullOrWhiteSpace(username) || username.Length > 24)
                 return Results.BadRequest(new { error = "Username is required and must be <= 24 characters." });
 
@@ -28,6 +28,7 @@ public static class AuthEndpoints
             var displayName = EndpointHelpers.TrimTo(request.DisplayName, 16);
             if (string.IsNullOrWhiteSpace(displayName))
                 return Results.BadRequest(new { error = "Display name is required." });
+
             var normalized = username.ToLowerInvariant();
 
             var exists = await db.Players.AnyAsync(p => p.NormalizedUsername == normalized);
@@ -43,6 +44,7 @@ public static class AuthEndpoints
                 if (string.IsNullOrWhiteSpace(expectedAdminKey) || adminKey != expectedAdminKey)
                     return Results.BadRequest(new { error = "Invalid admin key." });
             }
+
             var isAdmin = wantsAdmin;
 
             var player = new Player
@@ -63,12 +65,18 @@ public static class AuthEndpoints
 
             await PlayerIdentityExtensions.SignInPlayerAsync(ctx, player);
 
-            return Results.Ok(new { player.Id, player.Username, player.DisplayName, player.IsAdmin });
+            return Results.Ok(new
+            {
+                player.Id,
+                player.Username,
+                player.DisplayName,
+                player.IsAdmin
+            });
         });
 
         group.MapPost("/login", async ([FromBody] LoginRequest request, HttpContext ctx, AppDbContext db) =>
         {
-            var username = request.Username?.Trim();
+            var username = request.Username.Trim();
             if (string.IsNullOrWhiteSpace(username) || string.IsNullOrWhiteSpace(request.Password))
                 return Results.BadRequest(new { error = "Username and password are required." });
             if (username.Length > 24)
@@ -83,12 +91,19 @@ public static class AuthEndpoints
             {
                 player.DisplayName = EndpointHelpers.TrimTo(player.Username, 16);
             }
+
             player.LastLoginAt = DateTimeOffset.UtcNow;
             await db.SaveChangesAsync();
 
             await PlayerIdentityExtensions.SignInPlayerAsync(ctx, player);
 
-            return Results.Ok(new { player.Id, player.Username, player.DisplayName, player.IsAdmin });
+            return Results.Ok(new
+            {
+                player.Id,
+                player.Username,
+                player.DisplayName,
+                player.IsAdmin
+            });
         });
 
         group.MapPost("/logout", async (HttpContext ctx) =>