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.

frontend/src/features/admin/users/api.ts

@@ -0,0 +1,34 @@
+import { apiRequest } from '@/shared/api/client'
+import type { PagedList, UserSummaryDto } from '@/shared/api/types'
+
+export type ListUsersParams = {
+  page: number
+  pageSize: number
+  search?: string
+  roleId?: string
+  isBlocked?: boolean
+}
+
+export function listUsers(params: ListUsersParams) {
+  const query = new URLSearchParams({
+    page: String(params.page),
+    pageSize: String(params.pageSize),
+  })
+  if (params.search) query.set('search', params.search)
+  if (params.roleId) query.set('roleId', params.roleId)
+  if (params.isBlocked !== undefined) query.set('isBlocked', String(params.isBlocked))
+
+  return apiRequest<PagedList<UserSummaryDto>>(`/admin/users?${query.toString()}`)
+}
+
+export function blockUser(id: string) {
+  return apiRequest<void>(`/admin/users/${id}/block`, { method: 'POST' })
+}
+
+export function unblockUser(id: string) {
+  return apiRequest<void>(`/admin/users/${id}/unblock`, { method: 'POST' })
+}
+
+export function deleteUser(id: string) {
+  return apiRequest<void>(`/admin/users/${id}`, { method: 'DELETE' })
+}