feat: add friend wishlist link

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 {