feat: add StudentNav with logout to all student pages

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/app/(student)/dashboard/page.tsx

@@ -2,6 +2,7 @@
 
 import { useState, useEffect } from 'react';
 import Link from 'next/link';
+import { StudentNav } from '@/components/StudentNav';
 import { BalanceCard } from '@/components/BalanceCard';
 import { TransactionList } from '@/components/TransactionList';
 import { Spinner } from '@/components/ui';
@@ -58,6 +59,8 @@ export default function StudentDashboardPage() {
   const balance = profile?.balance ?? user?.balance ?? 0;
 
   return (
+    <div className="min-h-screen">
+      <StudentNav />
     <main className="mx-auto max-w-lg space-y-6 p-4 pb-10 pt-6">
       <h1 className="text-xl font-bold text-white">
         Привет, {displayName.split(' ')[0]} 👋
@@ -77,5 +80,6 @@ export default function StudentDashboardPage() {
         </div>
       </section>
     </main>
+    </div>
   );
 }

frontend/app/(student)/history/page.tsx

@@ -2,6 +2,7 @@
 
 import { useState, useEffect, useCallback } from 'react';
 import Link from 'next/link';
+import { StudentNav } from '@/components/StudentNav';
 import { TransactionList } from '@/components/TransactionList';
 import { Button } from '@/components/ui';
 import { api } from '@/lib/api';
@@ -49,13 +50,10 @@ export default function HistoryPage() {
   const hasMore = transactions.length < total;
 
   return (
+    <div className="min-h-screen">
+      <StudentNav />
     <main className="mx-auto max-w-lg p-4 pb-10 pt-6">
-      <div className="mb-4 flex items-center gap-3">
-        <Link href="/dashboard" className="text-sm text-blue-400 hover:text-blue-300">
-          ← Назад
-        </Link>
-        <h1 className="text-xl font-bold text-white">История операций</h1>
-      </div>
+      <h1 className="mb-4 text-xl font-bold text-white">История операций</h1>
 
       {error && (
         <p className="mb-4 rounded-lg bg-red-900/30 px-3 py-2 text-sm text-red-400">{error}</p>
@@ -77,5 +75,6 @@ export default function HistoryPage() {
         <p className="mt-4 text-center text-xs text-gray-600">Это все операции</p>
       )}
     </main>
+    </div>
   );
 }

frontend/app/(student)/partners/page.tsx

@@ -1,7 +1,7 @@
 'use client';
 
 import { useState, useEffect } from 'react';
-import Link from 'next/link';
+import { StudentNav } from '@/components/StudentNav';
 import { PartnerCard } from '@/components/PartnerCard';
 import { Spinner } from '@/components/ui';
 import { api } from '@/lib/api';
@@ -27,13 +27,10 @@ export default function PartnersPage() {
   }, []);
 
   return (
+    <div className="min-h-screen">
+      <StudentNav />
     <main className="mx-auto max-w-lg p-4 pb-10 pt-6">
-      <div className="mb-4 flex items-center gap-3">
-        <Link href="/dashboard" className="text-sm text-blue-400 hover:text-blue-300">
-          ← Назад
-        </Link>
-        <h1 className="text-xl font-bold text-white">Партнёры</h1>
-      </div>
+      <h1 className="mb-4 text-xl font-bold text-white">Партнёры</h1>
 
       {loading && (
         <div className="flex justify-center py-12">
@@ -57,5 +54,6 @@ export default function PartnersPage() {
         </div>
       )}
     </main>
+    </div>
   );
 }

frontend/app/(student)/qr/page.tsx

@@ -1,22 +1,21 @@
 'use client';
 
-import Link from 'next/link';
+import { StudentNav } from '@/components/StudentNav';
 import { QRDisplay } from '@/components/QRDisplay';
 
 export default function QRPage() {
   return (
-    <main className="flex min-h-screen flex-col items-center justify-center gap-6 p-6">
-      <h1 className="text-xl font-bold text-white">Оплата поинтами</h1>
+    <div className="min-h-screen">
+      <StudentNav />
+      <main className="flex flex-col items-center justify-center gap-6 p-6 pt-12">
+        <h1 className="text-xl font-bold text-white">Оплата поинтами</h1>
 
-      <QRDisplay />
+        <QRDisplay />
 
-      <p className="max-w-xs text-center text-sm text-gray-500">
-        Покажи этот QR кассиру. Он действителен 5 минут и может быть использован только один раз.
-      </p>
-
-      <Link href="/dashboard" className="text-sm text-blue-400 hover:text-blue-300">
-        ← Назад
-      </Link>
-    </main>
+        <p className="max-w-xs text-center text-sm text-gray-500">
+          Покажи этот QR кассиру. Он действителен 5 минут и может быть использован только один раз.
+        </p>
+      </main>
+    </div>
   );
 }