- Implement bidirectional KK-KTP linkage system (address-based & NIK-based) - Optimize scanner for mobile devices (touch slop, larger hit areas, modal locking) - Add NIK validation (16-digit numeric) with client-side feedback - Set default RT/RW values to '000' for both KK and KTP forms - Change 'Kpl Keluarga' label to 'Kepala Keluarga' - Improve scanner error messages and user feedback - Remove redundant 'Deteksi Dokumen' button - Add database schema updates and Docker support files