fix(ui): implement ServerIdentityService to resolve SSR profile fetch issues

- Added ServerIdentityService to handle profile requests directly from DB on server
- Updated Program.cs to use ServerIdentityService in the Web project
- Cleaned up diagnostic logs across the solution
- Finalized Dashboard glass panel animations

src/NexusReader.Web.New/Services/ServerIdentityService.cs

@@ -0,0 +1,74 @@
+using System.Security.Claims;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.EntityFrameworkCore;
+using NexusReader.Application.DTOs.User;
+using NexusReader.Data.Persistence;
+using NexusReader.Domain.Entities;
+using NexusReader.UI.Shared.Services;
+
+namespace NexusReader.Web.New.Services;
+
+public class ServerIdentityService : IIdentityService
+{
+    private readonly UserManager<NexusUser> _userManager;
+    private readonly IHttpContextAccessor _httpContextAccessor;
+    private readonly IDbContextFactory<AppDbContext> _dbContextFactory;
+
+    public ServerIdentityService(
+        UserManager<NexusUser> userManager,
+        IHttpContextAccessor httpContextAccessor,
+        IDbContextFactory<AppDbContext> dbContextFactory)
+    {
+        _userManager = userManager;
+        _httpContextAccessor = httpContextAccessor;
+        _dbContextFactory = dbContextFactory;
+    }
+
+    public Task<bool> LoginAsync(string email, string password, bool rememberMe = false) 
+        => throw new NotSupportedException("Use standard Identity endpoints for login on server.");
+
+    public Task LogoutAsync() 
+        => throw new NotSupportedException("Use standard Identity endpoints for logout on server.");
+
+    public Task<bool> RegisterAsync(string email, string password) 
+        => throw new NotSupportedException("Use standard Identity endpoints for registration on server.");
+
+    public Task<bool> RefreshTokenAsync() => Task.FromResult(true);
+
+    public async Task<UserProfile?> GetProfileAsync()
+    {
+        var user = _httpContextAccessor.HttpContext?.User;
+        if (user == null || !user.Identity?.IsAuthenticated == true) return null;
+
+        var userId = user.FindFirstValue(ClaimTypes.NameIdentifier);
+        if (userId == null) return null;
+
+        using var dbContext = await _dbContextFactory.CreateDbContextAsync();
+        
+        var profile = await dbContext.Users
+            .Where(u => u.Id == userId)
+            .Select(u => new UserProfile(
+                u.Email ?? string.Empty,
+                u.AITokensUsed,
+                u.TenantId != null && u.TenantId.Length == 36 ? new Guid(u.TenantId) : Guid.Empty,
+                u.SubscriptionPlan != null ? new SubscriptionPlanDto
+                {
+                    Id = u.SubscriptionPlan.Id,
+                    Name = u.SubscriptionPlan.PlanName,
+                    AITokenLimit = u.SubscriptionPlan.AITokenLimit,
+                    MonthlyPrice = u.SubscriptionPlan.MonthlyPrice
+                } : new SubscriptionPlanDto(),
+                u.QuizResults.Any(q => q.TotalQuestions > 0) 
+                    ? (int)u.QuizResults.Where(q => q.TotalQuestions > 0).Average(q => (double)q.Score / q.TotalQuestions * 100) 
+                    : 0,
+                u.Ebooks.OrderByDescending(e => e.LastReadDate).Select(e => new LastReadBookDto
+                {
+                    Id = e.Id,
+                    Title = e.Title
+                }).FirstOrDefault()
+            ))
+            .FirstOrDefaultAsync();
+
+        return profile;
+    }
+}