- Detect all threshold_* nodes from kontrol_1
- Support unlimited threshold configurations
- Each threshold: batas_bawah, batas_atas, smart_mode, pot_aktif[], pompa settings
- Smart mode: water until batas_atas reached
- Fixed mode: water for fixed duration
- Setup script: setup-firebase-threshold.js for auto Firebase initialization
- Improved logging: show threshold ID, mode, and pot info on trigger