refactor: Rename TrueCV to RealCV throughout codebase

- Renamed all directories (TrueCV.* -> RealCV.*)
- Renamed all project files (.csproj)
- Renamed solution file (TrueCV.sln -> RealCV.sln)
- Updated all namespaces in C# and Razor files
- Updated project references
- Updated CSS variable names

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/RealCV.Infrastructure/Services/UserContextService.cs

@@ -0,0 +1,28 @@
+using System.Security.Claims;
+using Microsoft.AspNetCore.Components.Authorization;
+using RealCV.Application.Interfaces;
+
+namespace RealCV.Infrastructure.Services;
+
+public sealed class UserContextService : IUserContextService
+{
+    private readonly AuthenticationStateProvider _authenticationStateProvider;
+
+    public UserContextService(AuthenticationStateProvider authenticationStateProvider)
+    {
+        _authenticationStateProvider = authenticationStateProvider;
+    }
+
+    public async Task<Guid?> GetCurrentUserIdAsync()
+    {
+        var authState = await _authenticationStateProvider.GetAuthenticationStateAsync();
+        var userIdClaim = authState.User.FindFirst(ClaimTypes.NameIdentifier)?.Value;
+
+        if (string.IsNullOrEmpty(userIdClaim) || !Guid.TryParse(userIdClaim, out var userId))
+        {
+            return null;
+        }
+
+        return userId;
+    }
+}