Fair Value Measurements - Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Details) - USD ($) |
6 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2025 |
Dec. 31, 2024 |
Jun. 30, 2024 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Fair Value On ARecurring Basis Using Significant Unobservable Inputs Abstract | |||||
| Beginning balance | $ 15,224,665 | $ 2,047,000 | $ 2,047,000 | $ 2,047,000 | |
| SAFE Notes issued during the period | 1,600,800 | 8,190,000 | 1,940,000 | 8,190,000 | 1,500,000 |
| Change in fair value during the period | 3,638,167 | 4,987,665 | 4,987,665 | 547,000 | |
| Ending balance | $ 20,463,632 | $ 15,224,665 | $ 2,047,000 | $ 15,224,665 | $ 2,047,000 |