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/auth/LoginForm.tsx

@@ -0,0 +1,60 @@
+import { zodResolver } from '@hookform/resolvers/zod'
+import { useForm } from 'react-hook-form'
+import { useTranslation } from 'react-i18next'
+import { z } from 'zod'
+import { Button } from '@/shared/ui/button'
+import { Input } from '@/shared/ui/input'
+import { Label } from '@/shared/ui/label'
+import { toast } from '@/shared/ui/toast-store'
+import { HttpError } from '@/shared/api/client'
+import { applyAuthResponse, login } from './api'
+
+const schema = z.object({
+  userName: z.string().min(1),
+  password: z.string().min(1),
+})
+
+type FormValues = z.infer<typeof schema>
+
+export function LoginForm({ onSuccess }: { onSuccess: () => void }) {
+  const { t } = useTranslation()
+  const {
+    register: registerField,
+    handleSubmit,
+    formState: { errors, isSubmitting },
+  } = useForm<FormValues>({ resolver: zodResolver(schema) })
+
+  const onSubmit = async (values: FormValues) => {
+    try {
+      const auth = await login(values.userName, values.password)
+      applyAuthResponse(auth)
+      onSuccess()
+    } catch (error) {
+      const message =
+        error instanceof HttpError && error.status === 401
+          ? t('auth.invalidCredentials')
+          : error instanceof HttpError && error.status === 403
+            ? t('auth.blocked')
+            : t('auth.genericError')
+      toast.error(message)
+    }
+  }
+
+  return (
+    <form className="flex flex-col gap-4" onSubmit={handleSubmit(onSubmit)}>
+      <div className="flex flex-col gap-1.5">
+        <Label htmlFor="userName">{t('auth.userName')}</Label>
+        <Input id="userName" autoComplete="username" {...registerField('userName')} />
+        {errors.userName && <p className="text-xs text-red-500">{errors.userName.message}</p>}
+      </div>
+      <div className="flex flex-col gap-1.5">
+        <Label htmlFor="password">{t('auth.password')}</Label>
+        <Input id="password" type="password" autoComplete="current-password" {...registerField('password')} />
+        {errors.password && <p className="text-xs text-red-500">{errors.password.message}</p>}
+      </div>
+      <Button type="submit" disabled={isSubmitting}>
+        {t('auth.submitLogin')}
+      </Button>
+    </form>
+  )
+}