v3.26.3
FAIR VALUE MEASUREMENTS - Carrying value and fair value for the convertible notes payable (Details) - USD ($)
Jun. 30, 2026
Dec. 31, 2025
Dec. 31, 2024
FAIR VALUE MEASUREMENTS      
Convertible debt   $ 3,630,000  
Carrying Amount      
FAIR VALUE MEASUREMENTS      
Convertible debt $ 6,282,197 4,599,225 $ 8,570,000
Carrying Amount | 2025 Convertible Notes      
FAIR VALUE MEASUREMENTS      
Convertible debt 1,963,754 3,212,250  
Carrying Amount | 2026 Convertible Notes      
FAIR VALUE MEASUREMENTS      
Convertible debt 3,712,000    
Carrying Amount | SEPA Convertible Note      
FAIR VALUE MEASUREMENTS      
Convertible debt 606,443 1,386,975 2,500,000
Estimated Fair Value      
FAIR VALUE MEASUREMENTS      
Convertible debt 6,189,849 5,321,303 8,542,323
Estimated Fair Value | 2025 Convertible Notes      
FAIR VALUE MEASUREMENTS      
Convertible debt 2,030,796 3,778,303  
Estimated Fair Value | 2026 Convertible Notes      
FAIR VALUE MEASUREMENTS      
Convertible debt 3,318,053    
Estimated Fair Value | SEPA Convertible Note      
FAIR VALUE MEASUREMENTS      
Convertible debt $ 841,000 $ 1,543,000 $ 2,365,114