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Fair Value Measurements - Schedule of Public Placement Warrant Liability (Details) - USD ($) $ in Thousands |  | 2 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Feb. 14, 2025 | [1] | Mar. 30, 2025 | Feb. 13, 2025 | Jun. 30, 2025 | Mar. 30, 2025 | Jun. 30, 2024 | Mar. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024 | Dec. 31, 2023
Warrant [Member] | Public Placement Warrant Liability [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Public Placement Warrant Liability [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Balance |  |  |  | $ 267 |  |  | $ 267 |  |  | $ 267 |  |  |
Change in estimated fair value |  |  |  |  |  | $ (78) | (184) |  |  |  |  |  |
Balance |  | $ 83 |  |  |  | 5 | 83 |  |  | 5 |  | 267 |
Warrant [Member] | Private Placement Warrant Liability [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Public Placement Warrant Liability [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Balance |  |  |  | 133 |  |  | 133 |  |  | 133 |  |  |
Change in estimated fair value | $ 1,816 | (1,276) | [1] | 71 | [1] | (499) |  |  |  |  |  |  |
Balance |  | $ 744 |  |  |  | 245 | 744 |  |  | 245 |  | 133 |
Warrant [Member] | Convertible Preferred Stock Warrant Liability [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Public Placement Warrant Liability [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Balance |  |  |  |  |  |  |  |  | 203 |  | 203 | 203 | 330
Change in estimated fair value |  |  |  |  |  |  |  | $ (73) | (24) |  |  |  |
Balance |  |  |  |  |  |  |  | 106 | 179 |  | 106 |  | 203
Nonrelated Party [Member] | Convertible Notes Payable [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Public Placement Warrant Liability [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Balance |  |  |  |  |  |  |  |  | 15,604 |  | 15,604 | 15,604 |
Note issuance during the period |  |  |  |  |  |  |  | 10,130 | 3,457 |  |  |  |
Loss on extinguishment |  |  |  |  |  |  |  | 22,183 |  |  |  |  |
Change in estimated fair value |  |  |  |  |  |  |  | 15,874 | 1,213 |  |  |  |
Balance |  |  |  |  |  |  |  | 68,461 | 20,274 |  | 68,461 |  | 15,604
Related Party [Member] | Convertible Notes Payable [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Public Placement Warrant Liability [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Balance |  |  |  |  |  |  |  |  | 2,133 |  | 2,133 | 2,133 |
Note issuance during the period |  |  |  |  |  |  |  | 3,635 | 1,449 |  |  |  |
Loss on extinguishment |  |  |  |  |  |  |  | 4,176 |  |  |  |  |
Change in estimated fair value |  |  |  |  |  |  |  | 5,300 | 248 |  |  |  |
Balance |  |  |  |  |  |  |  | 16,941 | 3,830 |  | 16,941 |  | 2,133
Share-Based Termination Liability [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Public Placement Warrant Liability [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Balance |  |  |  |  |  |  |  |  | 6,349 |  | 6,349 | 6,349 |
Change in estimated fair value |  |  |  |  |  |  |  | 1,498 | (186) |  |  |  |
Balance |  |  |  |  |  |  |  | $ 7,661 | $ 6,163 |  | $ 7,661 |  | $ 6,349
[1] | See Note 7 - Warrants for more information on the exchange of warrants with the Sponsor and modification of the related party private placement warrant liability.

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