v3.26.3
Income taxes (Details)
12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Income Tax Disclosure [Abstract]    
US Statutory income tax rate 21.00% 21.00%
State income tax rate 2.30% 8.70%
Tax differences from other jurisdictions (0.40%)
R&D expense super deduction (2.70%)  
Change in fair value of simple agreements for future equity (9.00%) (17.90%)
Changes in valuation allowance (11.20%) (11.80%)
Effective income tax rate (0.00%) (0.00%)