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/Roles/UpdateRole/UpdateRoleCommandValidator.cs

@@ -0,0 +1,11 @@
+using FluentValidation;
+
+namespace TeleWave.Application.Admin.Roles.UpdateRole;
+
+public sealed class UpdateRoleCommandValidator : AbstractValidator<UpdateRoleCommand>
+{
+    public UpdateRoleCommandValidator()
+    {
+        RuleFor(x => x.Name).NotEmpty().MaximumLength(64);
+    }
+}