feat(seed): split seed scripts into production and development

- 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

Makefile

@@ -12,6 +12,7 @@ endif
 .PHONY: help dev-cli prod-cli \
         dev-up dev-down dev-up-rebuild \
         prod-up prod-down prod-up-rebuild \
+        seed-dev seed-prod \
         test test-watch test-coverage
 
 help:
@@ -24,6 +25,8 @@ help:
 	@echo "  make prod-up                           # docker compose --profile prod up -d"
 	@echo "  make prod-up-rebuild                   # docker compose --profile prod up -d --build"
 	@echo "  make prod-down                         # docker compose --profile prod down"
+	@echo "  make seed-dev                          # Seed database with development data"
+	@echo "  make seed-prod                         # Seed database with production data"
 	@echo "  make test                              # Run backend tests"
 	@echo "  make test-watch                        # Run backend tests in watch mode"
 	@echo "  make test-coverage                     # Run backend tests with coverage report"
@@ -57,6 +60,13 @@ prod-up-rebuild:
 prod-down:
 	$(COMPOSE) --profile prod down
 
+# Database seeding
+seed-dev:
+	$(COMPOSE) exec backend npm run prisma:seed:dev
+
+seed-prod:
+	$(COMPOSE) exec $(BACKEND_SVC) npm run prisma:seed:prod
+
 # Tests
 test:
 	$(COMPOSE) exec $(BACKEND_SVC) npm test