feat(auth): подтверждение email + актуализация SMTP/Ollama конфигов

- Резенд письма верификации (/auth/resend-verification), модалка на
  фронте с поллингом статуса, страница /verify-email/:token
- SMTP переведён на собственный Postfix (mail.jze9mail.ru, STARTTLS,
  SMTP_TLS_VERIFY) вместо Yandex-заглушки в дефолтах и .env.example
- OLLAMA_URL и модель в worker-gpu синхронизированы с новым GPU-хостом
  (llama3:8b -> qwen2.5:7b, которой раньше не было на сервере)

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

services/frontend/src/api/client.ts

@@ -40,6 +40,9 @@ export const authApi = {
 
   verifyEmail: (token: string) =>
     api.post(`/auth/verify-email/${token}`),
+
+  resendVerification: () =>
+    api.post('/auth/resend-verification'),
 };
 
 export const tasksApi = {

services/frontend/src/components/EmailVerificationModal.tsx

@@ -0,0 +1,126 @@
+import { useState } from 'react';
+import { useLocation } from 'react-router-dom';
+import { useMutation, useQuery } from '@tanstack/react-query';
+import { Mail, X, CheckCircle2, AlertCircle } from 'lucide-react';
+import toast from 'react-hot-toast';
+import { authApi } from '../api/client';
+import { useAuthStore } from '../store/auth';
+
+export function EmailVerificationModal() {
+  const { user, updateUser } = useAuthStore();
+  const location = useLocation();
+  const [dismissed, setDismissed] = useState(false);
+  const [verified, setVerified] = useState(false);
+
+  // Не показывать на странице подтверждения — там своя UI
+  if (location.pathname.startsWith('/verify-email')) return null;
+
+  const resend = useMutation({
+    mutationFn: () => authApi.resendVerification(),
+    onSuccess: () => toast.success('Письмо отправлено, проверьте почту'),
+    onError: () => toast.error('Не удалось отправить письмо'),
+  });
+
+  useQuery({
+    queryKey: ['email-verification-poll'],
+    queryFn: async () => {
+      const res = await authApi.me();
+      if (res.data.is_verified) {
+        updateUser({ is_verified: true });
+        setVerified(true);
+      }
+      return res.data;
+    },
+    enabled: !!(user && !user.is_verified && !dismissed && !verified),
+    refetchInterval: 5000,
+    staleTime: 0,
+  });
+
+  if (!user || dismissed) return null;
+  if (!user.is_verified && !verified) {
+    return (
+      <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/40 backdrop-blur-sm">
+        <div className="relative w-full max-w-md mx-4 bg-white rounded-2xl shadow-2xl p-8">
+          <button
+            onClick={() => setDismissed(true)}
+            className="absolute top-4 right-4 text-gray-400 hover:text-gray-600 transition-colors"
+          >
+            <X className="w-5 h-5" />
+          </button>
+
+          <div className="flex justify-center mb-5">
+            <div className="p-4 bg-amber-50 rounded-full">
+              <Mail className="w-8 h-8 text-amber-500" />
+            </div>
+          </div>
+
+          <h2 className="text-xl font-bold text-gray-900 text-center mb-1">
+            Подтвердите ваш email
+          </h2>
+          <p className="text-center text-sm text-gray-400 mb-6">{user.email}</p>
+
+          {/* Статус */}
+          <div className="flex items-center justify-center gap-2 mb-6 px-4 py-3 bg-amber-50 rounded-xl">
+            <AlertCircle className="w-4 h-4 text-amber-500 shrink-0" />
+            <span className="text-sm font-medium text-amber-700">Email не подтверждён</span>
+          </div>
+
+          <p className="text-sm text-gray-500 text-center mb-6 leading-relaxed">
+            Мы отправили письмо на{' '}
+            <span className="font-medium text-gray-800">{user.email}</span>.
+            Нажмите кнопку «Подтвердить» в письме для активации аккаунта.
+          </p>
+
+          <button
+            onClick={() => resend.mutate()}
+            disabled={resend.isPending}
+            className="w-full py-3 bg-brand-600 text-white rounded-xl text-sm font-medium hover:bg-brand-700 disabled:opacity-50 transition-colors"
+          >
+            {resend.isPending ? 'Отправляем...' : 'Подтвердить'}
+          </button>
+
+          <button
+            onClick={() => setDismissed(true)}
+            className="w-full mt-3 py-2.5 text-sm text-gray-400 hover:text-gray-600 transition-colors"
+          >
+            Напомнить позже
+          </button>
+        </div>
+      </div>
+    );
+  }
+
+  if (verified) {
+    return (
+      <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/40 backdrop-blur-sm">
+        <div className="relative w-full max-w-md mx-4 bg-white rounded-2xl shadow-2xl p-8 text-center">
+          <div className="flex justify-center mb-5">
+            <div className="p-4 bg-green-50 rounded-full">
+              <CheckCircle2 className="w-8 h-8 text-green-500" />
+            </div>
+          </div>
+
+          <h2 className="text-xl font-bold text-gray-900 mb-2">Email подтверждён!</h2>
+
+          <div className="flex items-center justify-center gap-2 mb-6 px-4 py-3 bg-green-50 rounded-xl">
+            <CheckCircle2 className="w-4 h-4 text-green-500 shrink-0" />
+            <span className="text-sm font-medium text-green-700">Email подтверждён</span>
+          </div>
+
+          <p className="text-sm text-gray-500 mb-6">
+            Аккаунт активирован. Теперь вы получаете уведомления о завершении задач.
+          </p>
+
+          <button
+            onClick={() => setDismissed(true)}
+            className="w-full py-3 bg-brand-600 text-white rounded-xl text-sm font-medium hover:bg-brand-700 transition-colors"
+          >
+            Закрыть
+          </button>
+        </div>
+      </div>
+    );
+  }
+
+  return null;
+}

services/frontend/src/components/Layout.tsx

@@ -3,6 +3,7 @@ import { Link, NavLink, useNavigate } from 'react-router-dom';
 import { GraduationCap, Search, BookOpen, Upload, LayoutDashboard, LogOut, User, BookMarked } from 'lucide-react';
 import { clsx } from 'clsx';
 import { useAuthStore } from '../store/auth';
+import { EmailVerificationModal } from './EmailVerificationModal';
 
 interface LayoutProps {
   children: React.ReactNode;
@@ -144,6 +145,8 @@ export function Layout({ children }: LayoutProps) {
       <main className="max-w-6xl mx-auto px-4 sm:px-6 lg:px-8 py-8">
         {children}
       </main>
+
+      <EmailVerificationModal />
     </div>
   );
 }

services/frontend/src/main.tsx

@@ -14,6 +14,7 @@ import { Task } from './pages/Task';
 import { Pricing } from './pages/Pricing';
 import { Login } from './pages/Login';
 import { Register } from './pages/Register';
+import { VerifyEmail } from './pages/VerifyEmail';
 import { AdminLayout } from './pages/admin/AdminLayout';
 import { Dashboard } from './pages/admin/Dashboard';
 import { Users as AdminUsers } from './pages/admin/Users';
@@ -48,6 +49,7 @@ function PublicApp() {
         <Route path="/pricing" element={<Pricing />} />
         <Route path="/login" element={<Login />} />
         <Route path="/register" element={<Register />} />
+        <Route path="/verify-email/:token" element={<VerifyEmail />} />
       </Routes>
     </Layout>
   );

services/frontend/src/pages/VerifyEmail.tsx

@@ -0,0 +1,83 @@
+import { useEffect } from 'react';
+import { useParams, useNavigate, Link } from 'react-router-dom';
+import { useMutation } from '@tanstack/react-query';
+import { CheckCircle2, XCircle, Loader2 } from 'lucide-react';
+import { authApi } from '../api/client';
+import { useAuthStore } from '../store/auth';
+
+export function VerifyEmail() {
+  const { token } = useParams<{ token: string }>();
+  const navigate = useNavigate();
+  const { updateUser } = useAuthStore();
+
+  const verify = useMutation({
+    mutationFn: () => authApi.verifyEmail(token!),
+    onSuccess: () => {
+      updateUser({ is_verified: true });
+      setTimeout(() => navigate('/cabinet'), 3000);
+    },
+  });
+
+  useEffect(() => {
+    if (token) verify.mutate();
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [token]);
+
+  return (
+    <div className="max-w-md mx-auto pt-16 text-center">
+      <div className="bg-white rounded-2xl border border-gray-100 p-10">
+        {verify.isPending && (
+          <>
+            <div className="flex justify-center mb-5">
+              <Loader2 className="w-14 h-14 text-brand-600 animate-spin" />
+            </div>
+            <h1 className="text-xl font-bold text-gray-900 mb-2">Подтверждаем email…</h1>
+            <p className="text-sm text-gray-500">Пожалуйста, подождите</p>
+          </>
+        )}
+
+        {verify.isSuccess && (
+          <>
+            <div className="flex justify-center mb-5">
+              <div className="p-4 bg-green-50 rounded-full">
+                <CheckCircle2 className="w-14 h-14 text-green-500" />
+              </div>
+            </div>
+            <h1 className="text-2xl font-bold text-gray-900 mb-2">Email подтверждён!</h1>
+            <div className="inline-flex items-center gap-2 px-4 py-2 bg-green-50 rounded-xl mb-4">
+              <CheckCircle2 className="w-4 h-4 text-green-500" />
+              <span className="text-sm font-medium text-green-700">Email подтверждён</span>
+            </div>
+            <p className="text-sm text-gray-500">
+              Аккаунт активирован. Перенаправляем в личный кабинет…
+            </p>
+          </>
+        )}
+
+        {verify.isError && (
+          <>
+            <div className="flex justify-center mb-5">
+              <div className="p-4 bg-red-50 rounded-full">
+                <XCircle className="w-14 h-14 text-red-500" />
+              </div>
+            </div>
+            <h1 className="text-2xl font-bold text-gray-900 mb-2">Ошибка подтверждения</h1>
+            <div className="inline-flex items-center gap-2 px-4 py-2 bg-red-50 rounded-xl mb-4">
+              <XCircle className="w-4 h-4 text-red-500" />
+              <span className="text-sm font-medium text-red-700">Email не подтверждён</span>
+            </div>
+            <p className="text-sm text-gray-500 mb-6">
+              Ссылка недействительна или устарела. Запросите новое письмо в личном кабинете.
+            </p>
+            <Link
+              to="/cabinet"
+              className="inline-block px-6 py-2.5 bg-brand-600 text-white rounded-xl text-sm font-medium hover:bg-brand-700 transition-colors"
+            >
+              В личный кабинет
+            </Link>
+          </>
+        )}
+      </div>
+    </div>
+  );
+}