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/ListUsers/ListUsersQueryHandler.cs

@@ -0,0 +1,22 @@
+using LiteCqrs;
+using TeleWave.Application.Common.Interfaces;
+using TeleWave.Application.Common.Models;
+
+namespace TeleWave.Application.Admin.Users.ListUsers;
+
+public sealed class ListUsersQueryHandler(IIdentityService identityService)
+    : IQueryHandler<ListUsersQuery, PagedList<UserSummaryDto>>
+{
+    public Task<PagedList<UserSummaryDto>> Handle(
+        ListUsersQuery query,
+        CancellationToken cancellationToken
+    ) =>
+        identityService.ListUsersAsync(
+            query.Page,
+            query.PageSize,
+            query.Search,
+            query.RoleId,
+            query.IsBlocked,
+            cancellationToken
+        );
+}