Add Docker Registry AIO with Nuxt Token Auth and admin UI.

Compose brings up registry:3 plus a Prisma/SQLite Nuxt app for docker login, ACL management, and image browsing with shadcn-vue.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/prisma/seed.ts

@@ -0,0 +1,23 @@
+import type { PrismaClient } from '../../generated/prisma/client'
+import { hashPassword } from '../server/utils/password'
+
+type SeedPrisma = Pick<PrismaClient, 'user'>
+
+export async function seedAdmin(prisma: SeedPrisma) {
+  const username = process.env.ADMIN_USERNAME || 'admin'
+  const password = process.env.ADMIN_PASSWORD || 'admin123'
+
+  const existing = await prisma.user.findUnique({ where: { username } })
+  if (existing) {
+    return existing
+  }
+
+  return prisma.user.create({
+    data: {
+      username,
+      passwordHash: await hashPassword(password),
+      role: 'ADMIN',
+      active: true,
+    },
+  })
+}