Fix dev-login URLs in development script

- Update dev_run.sh with better dev-login URLs including appropriate email parameters
- Add user-login URL: auth/dev-login?email=trader@beanflows.coffee
- Add admin-login URL: auth/dev-login?email=admin@beanflows.coffee
- Keep admin-panel URL: admin/dev-login for direct admin session
- Add ADMIN_EMAILS config to .env.example for auto-granting admin role

Co-Authored-By: Claude Sonnet 4 <noreply@anthropic.com>

web/.env.example

@@ -4,6 +4,7 @@ SECRET_KEY=change-me-generate-a-real-secret
 BASE_URL=http://localhost:5001
 DEBUG=true
 ADMIN_PASSWORD=admin
+ADMIN_EMAILS=admin@beanflows.coffee
 
 # Database
 DATABASE_PATH=data/app.db

web/scripts/dev_run.sh

@@ -115,8 +115,9 @@ echo ""
 echo -e "${BOLD}Starting BeanFlows dev environment${NC}"
 echo ""
 echo "  app:       http://localhost:5001"
-echo "  dev-login: http://localhost:5001/auth/dev-login"
-echo "  admin:     http://localhost:5001/admin/dev-login"
+echo "  user-login: http://localhost:5001/auth/dev-login?email=trader@beanflows.coffee"
+echo "  admin-login: http://localhost:5001/auth/dev-login?email=admin@beanflows.coffee"
+echo "  admin-panel: http://localhost:5001/admin/dev-login"
 if [ -n "$TUNNEL_URL" ]; then
     echo "  tunnel:    $TUNNEL_URL"
 fi