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

apps/backend/prisma/seed.ts

@@ -0,0 +1,37 @@
+import { PrismaClient } from '@prisma/client';
+import { resolveUsers } from '../src/config/env.js';
+
+const prisma = new PrismaClient();
+
+async function main(): Promise<void> {
+  const users = resolveUsers();
+  for (const u of users) {
+    await prisma.user.upsert({
+      where: { username: u.username },
+      update: {
+        id: u.id,
+        slug: u.slug,
+        displayName: u.displayName,
+      },
+      create: {
+        id: u.id,
+        username: u.username,
+        slug: u.slug,
+        displayName: u.displayName,
+      },
+    });
+    // eslint-disable-next-line no-console
+    console.log(`seeded user: ${u.username} (slug=${u.slug}, id=${u.id})`);
+  }
+}
+
+main()
+  .then(async () => {
+    await prisma.$disconnect();
+  })
+  .catch(async (err) => {
+    // eslint-disable-next-line no-console
+    console.error(err);
+    await prisma.$disconnect();
+    process.exit(1);
+  });