feat(backend): add fastify api, auth, prisma schema and jobs

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

@@ -0,0 +1,58 @@
+import type { FastifyInstance } from 'fastify';
+import { markSeenSchema } from '@family-wishlist/shared';
+import { NotFoundError } from '../../utils/errors.js';
+
+export default async function publicRoutes(app: FastifyInstance) {
+  app.get('/:slug', async (request) => {
+    const { slug } = request.params as { slug: string };
+    const user = await app.prisma.user.findUnique({
+      where: { slug },
+      select: { slug: true, displayName: true, bio: true, avatarUrl: true },
+    });
+    if (!user) throw new NotFoundError('Profile');
+    return user;
+  });
+
+  app.get('/:slug/wishes', async (request) => {
+    const { slug } = request.params as { slug: string };
+    const user = await app.prisma.user.findUnique({ where: { slug }, select: { id: true } });
+    if (!user) throw new NotFoundError('Profile');
+
+    const wishes = await app.prisma.wish.findMany({
+      where: { userId: user.id, status: { in: ['ACTIVE', 'COMPLETED'] } },
+      orderBy: [{ status: 'asc' }, { createdAt: 'desc' }],
+    });
+
+    const wishIds = wishes.map((w) => w.id);
+    const seen = wishIds.length
+      ? await app.prisma.guestView.findMany({
+          where: { guestId: request.guestId, wishId: { in: wishIds } },
+          select: { wishId: true },
+        })
+      : [];
+    const seenSet = new Set(seen.map((s) => s.wishId));
+    return wishes.map((w) => ({
+      ...w,
+      isNewForGuest: w.status === 'ACTIVE' && !seenSet.has(w.id),
+    }));
+  });
+
+  app.post('/:slug/views', async (request) => {
+    const { slug } = request.params as { slug: string };
+    const body = markSeenSchema.parse(request.body);
+
+    const user = await app.prisma.user.findUnique({ where: { slug }, select: { id: true } });
+    if (!user) throw new NotFoundError('Profile');
+
+    // Filter wishIds to those that actually belong to this user (avoid cross-user pollution).
+    const owned = await app.prisma.wish.findMany({
+      where: { userId: user.id, id: { in: body.wishIds } },
+      select: { id: true },
+    });
+    if (owned.length === 0) return { marked: 0 };
+
+    const data = owned.map((w) => ({ guestId: request.guestId, wishId: w.id }));
+    const res = await app.prisma.guestView.createMany({ data, skipDuplicates: true });
+    return { marked: res.count };
+  });
+}