fix: auto-run Prisma migrate + seed on container startup

Dockerfile

@@ -22,6 +22,7 @@ COPY --from=backend /app/backend/dist ./dist
 COPY --from=backend /app/backend/node_modules ./node_modules
 COPY --from=backend /app/backend/package.json ./
 COPY --from=backend /app/backend/prisma ./prisma
+COPY --from=backend /app/backend/seed.js ./seed.js
 COPY --from=frontend /app/frontend/.output/public ./public
 EXPOSE 3000
-CMD ["node", "dist/main.js"]
+CMD ["sh", "-c", "npx prisma migrate deploy && node seed.js; node dist/main.js"]

backend/seed.js

@@ -0,0 +1,25 @@
+const { PrismaClient } = require('@prisma/client');
+const bcrypt = require('bcrypt');
+
+const prisma = new PrismaClient();
+
+async function main() {
+  const existing = await prisma.user.findUnique({ where: { email: 'admin@wraith.local' } });
+  if (existing) {
+    console.log('Seed: admin user already exists, skipping');
+    return;
+  }
+  const hash = await bcrypt.hash('wraith', 10);
+  await prisma.user.create({
+    data: {
+      email: 'admin@wraith.local',
+      passwordHash: hash,
+      displayName: 'Admin',
+    },
+  });
+  console.log('Seed complete: admin@wraith.local / wraith');
+}
+
+main()
+  .catch(console.error)
+  .finally(() => prisma.$disconnect());