feat: add friend wishlist link

Reviewed-on: #11

apps/backend/src/modules/profile/profile.routes.ts

@@ -3,6 +3,7 @@ import { updateProfileSchema } from '@family-wishlist/shared';
 import { ConflictError, NotFoundError, ValidationError } from '../../utils/errors.js';
 import { Prisma } from '@prisma/client';
 import { deleteLocalImageIfAny, saveUploadedAvatar } from '../images/storage.service.js';
+import { usersRegistry } from '../../auth/users.registry.js';
 
 const MAX_AVATAR_BYTES = 2 * 1024 * 1024;
 
@@ -15,6 +16,16 @@ export default async function profileRoutes(app: FastifyInstance) {
     return profile;
   });
 
+  app.get('/friend', async (request) => {
+    const friend = usersRegistry.all().find((u) => u.id !== request.user.id);
+    if (!friend) return null;
+
+    return app.prisma.user.findUnique({
+      where: { id: friend.id },
+      select: { slug: true, displayName: true, avatarUrl: true },
+    });
+  });
+
   app.patch('/', async (request) => {
     const body = updateProfileSchema.parse(request.body);
     try {

apps/frontend/src/components/Layout/Header.tsx

@@ -1,14 +1,22 @@
 import { Link, NavLink, useNavigate } from 'react-router-dom';
-import { Archive, Gift, LogOut, Sparkles, Trash2, UserCog, CheckCircle2 } from 'lucide-react';
+import { Archive, CheckCircle2, Gift, LogOut, Sparkles, Trash2, UserCog, Users } from 'lucide-react';
 import type { ComponentType } from 'react';
+import { useQuery } from '@tanstack/react-query';
 import { Button } from '../ui/Button';
 import { useAuthStore } from '@/features/auth/authStore';
 import { cn } from '@/lib/cn';
 import { useI18n, type TranslationKey } from '@/i18n/i18n';
 import { LanguageSwitcher } from '../LanguageSwitcher';
+import { api } from '@/lib/api';
 
 type NavIcon = ComponentType<{ className?: string }>;
 
+interface FriendProfile {
+  slug: string;
+  displayName: string;
+  avatarUrl: string | null;
+}
+
 const links = [
   { to: '/', label: 'header.active', icon: Sparkles, end: true },
   { to: '/completed', label: 'header.fulfilled', icon: CheckCircle2 },
@@ -26,6 +34,12 @@ export function Header() {
   const logout = useAuthStore((s) => s.logout);
   const navigate = useNavigate();
   const { t } = useI18n();
+  const friend = useQuery({
+    queryKey: ['profile-friend'],
+    queryFn: () => api.get<FriendProfile | null>('/api/profile/friend'),
+    staleTime: 10 * 60 * 1000,
+    enabled: user != null,
+  });
 
   if (!user) return null;
 
@@ -61,6 +75,20 @@ export function Header() {
               {t(l.label)}
             </NavLink>
           ))}
+          {friend.data && (
+            <NavLink
+              to={`/u/${friend.data.slug}`}
+              className={({ isActive }) =>
+                cn(
+                  'inline-flex items-center gap-1.5 rounded-md px-3 py-1.5 text-sm font-medium transition-colors',
+                  isActive ? 'bg-primary text-primary-foreground shadow-card' : 'text-ink hover:bg-ink/5',
+                )
+              }
+            >
+              <Users className="h-4 w-4" />
+              {t('header.friendWishes', { name: friend.data.displayName })}
+            </NavLink>
+          )}
         </nav>
 
         <div className="flex items-center gap-1">

apps/frontend/src/i18n/i18n.tsx

@@ -36,6 +36,7 @@ const translations = {
     'header.signedInAs': 'вошли как {name}',
     'header.profileSettings': 'Настройки профиля',
     'header.profile': 'Профиль',
+    'header.friendWishes': 'Желания {name}',
     'header.logout': 'Выйти',
     'login.title': 'С возвращением',
     'login.description': 'Войдите, чтобы управлять списком желаний. Доступы задаются на сервере.',
@@ -151,6 +152,7 @@ const translations = {
     'header.signedInAs': 'signed in as {name}',
     'header.profileSettings': 'Profile settings',
     'header.profile': 'Profile',
+    'header.friendWishes': "{name}'s wishes",
     'header.logout': 'Log out',
     'login.title': 'Welcome back',
     'login.description': 'Sign in to manage your wishlist. Credentials are set up via the server environment.',

packages/shared/src/profile.schema.ts

@@ -15,6 +15,14 @@ export const profileSchema = z.object({
 
 export type Profile = z.infer<typeof profileSchema>;
 
+export const friendProfileSchema = z.object({
+  slug: z.string(),
+  displayName: z.string(),
+  avatarUrl: z.string().nullable(),
+});
+
+export type FriendProfile = z.infer<typeof friendProfileSchema>;
+
 export const updateProfileSchema = z.object({
   slug: z
     .string()