Initial commit: base slice (auth, roles, users, admin) scaffold

Backend: .NET 10 Clean Architecture + LiteCqrs.Net + EF Core/PostgreSQL +
Identity/JWT. Frontend: React 19 + Vite + TanStack Query/Router + Tailwind v4
with a retro CRT theme. Docker/compose deployment mirroring PnvPanel's
conventions, scoped down to the current base feature set.

backend/src/TeleWave.Application/Auth/AuthResult.cs

@@ -0,0 +1,11 @@
+namespace TeleWave.Application.Auth;
+
+public sealed record CurrentUserDto(Guid Id, string UserName, string Role);
+
+public sealed record AuthResult(
+    string AccessToken,
+    DateTimeOffset AccessTokenExpiresAt,
+    string RefreshToken,
+    DateTimeOffset RefreshTokenExpiresAt,
+    CurrentUserDto User
+);