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/routes/login.tsx

@@ -0,0 +1,33 @@
+import { createFileRoute, Link, useNavigate } from '@tanstack/react-router'
+import { useTranslation } from 'react-i18next'
+import { LoginForm } from '@/features/auth/LoginForm'
+import { useRequireGuest } from '@/features/auth/guards'
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/shared/ui/card'
+
+export const Route = createFileRoute('/login')({ component: LoginPage })
+
+function LoginPage() {
+  useRequireGuest()
+  const { t } = useTranslation()
+  const navigate = useNavigate()
+
+  return (
+    <div className="mx-auto max-w-sm py-8">
+      <Card>
+        <CardHeader>
+          <CardTitle>{t('auth.loginTitle')}</CardTitle>
+          <CardDescription>{t('auth.loginSubtitle')}</CardDescription>
+        </CardHeader>
+        <CardContent>
+          <LoginForm onSuccess={() => void navigate({ to: '/dashboard' })} />
+          <p className="mt-4 text-center text-sm text-muted-foreground">
+            {t('auth.noAccount')}{' '}
+            <Link to="/register" className="text-primary hover:underline">
+              {t('nav.register')}
+            </Link>
+          </p>
+        </CardContent>
+      </Card>
+    </div>
+  )
+}