- NEW: Flexible threshold system (threshold_1, threshold_2, ... unlimited)
- Each threshold: batas_bawah, batas_atas, durasi, smart_mode, pot_aktif[]
- Smart mode: siram sampai batas_atas tercapai
- Fixed mode: siram sesuai durasi tetap
- ThresholdModel: Complete model with validation
- ThresholdService: CRUD operations for threshold management
- ThresholdManagementPage: UI untuk list dan manage threshold
- ThresholdFormPage: Add/edit form dengan slider dan pot selection
- Worker.js: Dynamic threshold_* detection and processing
- Navigation: Sensor button now goes to ThresholdManagementPage
- Firebase: Auto-setup script with example threshold data (threshold_1, threshold_2, threshold_3)
- Path: All threshold data stored in /kontrol_1
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