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

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

@@ -0,0 +1,43 @@
+import type { FastifyInstance } from 'fastify';
+import { loginSchema } from '@family-wishlist/shared';
+import { verifyCredentials } from './auth.service.js';
+import { usersRegistry } from '../../auth/users.registry.js';
+import { UnauthorizedError } from '../../utils/errors.js';
+
+export default async function authRoutes(app: FastifyInstance) {
+  app.post(
+    '/login',
+    {
+      config: {
+        rateLimit: { max: 5, timeWindow: '10 minutes' },
+      },
+    },
+    async (request, reply) => {
+      const body = loginSchema.parse(request.body);
+      const user = await verifyCredentials(body.username, body.password);
+      const token = await reply.jwtSign({ id: user.id, username: user.username });
+      app.setAuthCookie(reply, token);
+      return {
+        id: user.id,
+        username: user.username,
+        slug: user.slug,
+        displayName: user.displayName,
+      };
+    },
+  );
+
+  app.post('/logout', async (_request, reply) => {
+    app.clearAuthCookie(reply);
+    return { ok: true };
+  });
+
+  app.get(
+    '/me',
+    { preHandler: [app.authenticate] },
+    async (request) => {
+      const u = usersRegistry.findById(request.user.id);
+      if (!u) throw new UnauthorizedError();
+      return { id: u.id, username: u.username, slug: u.slug, displayName: u.displayName };
+    },
+  );
+}