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/Admin/Users/UnblockUser/UnblockUserCommandHandler.cs

@@ -0,0 +1,12 @@
+using LiteCqrs;
+using TeleWave.Application.Common.Interfaces;
+using TeleWave.Application.Common.Models;
+
+namespace TeleWave.Application.Admin.Users.UnblockUser;
+
+public sealed class UnblockUserCommandHandler(IIdentityService identityService)
+    : ICommandHandler<UnblockUserCommand, Result>
+{
+    public Task<Result> Handle(UnblockUserCommand command, CancellationToken cancellationToken) =>
+        identityService.UnblockUserAsync(command.UserId, cancellationToken);
+}