- Create scripts/init-db.sql for DB schema initialization
- Enhance start-services.sh to auto-initialize DB if needed
- Fix users admin handler: change root route from '/users' to '/' to avoid double prefix
- Remove deprecated handlers (departments/designations/employees) from users service
- Add missing admin route mappings for users and approval/case endpoints in gateway
- Update gateway to correctly handle /api/admin/users, /api/admin/approvals, etc.
- Update .env.example and docs
These changes enable running the stack without Docker and fix admin panel routing.
