- Create seed.production.js with admin user, divisions, and competition types only
- Rename seed.js to seed.development.js with all test data
- Add admin@spotlight.cam account with isAdmin flag and COMFORT tier
- Update test users to use @spotlight.cam domain and SUPPORTER tier
- Remove wsdcId from test users
- Add npm scripts: prisma:seed:dev and prisma:seed:prod
- Add Makefile targets: seed-dev and seed-prod
