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Fair Value Measurements - Schedule of Financial Assets and Liabilities that are Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | Dec. 29, 2024 | Dec. 31, 2023
--- | --- | ---
Financial Assets |  |  |  |  |
Financial Assets |  | $ 3,841 |  | $ 3,823 |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  | 102,561 |  | 14,958 |
Restricted cash [Member] |  |  |  |  |
Financial Assets |  |  |  |  |
Financial Assets |  | 3,841 |  | 3,823 |
July 2024 derivative liability [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities | [1] | 34,690 |  |  |
September 2024 derivative liability [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities | [1] | 62,432 |  |  |
Forward purchase agreements [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  | 3,494 | [2] | 3,831 | [1]
Public warrants [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  | 862 |  | 167 |
Private placement warrants [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  | 627 |  | 122 |
Working capital warrants [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  | 72 |  | 13 |
SAFE Agreement with related party [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  | 384 |  |  |
Carlyle Warrants [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  |  |  | 9,515 |
Replacement warrants [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  |  |  | 1,310 |
Level 1 [Member] |  |  |  |  |
Financial Assets |  |  |  |  |
Financial Assets |  | 3,841 |  | 3,823 |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  |  |  | 167 |
Level 1 [Member] | Restricted cash [Member] |  |  |  |  |
Financial Assets |  |  |  |  |
Financial Assets |  | 3,841 |  | 3,823 |
Level 1 [Member] | July 2024 derivative liability [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities | [1] |  |  |  |
Level 1 [Member] | September 2024 derivative liability [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities | [1] |  |  |  |
Level 1 [Member] | Forward purchase agreements [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  |  | [2] |  | [1]
Level 1 [Member] | Public warrants [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  |  |  | 167 |
Level 1 [Member] | Private placement warrants [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  |  |  |  |
Level 1 [Member] | Working capital warrants [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  |  |  |  |
Level 1 [Member] | SAFE Agreement with related party [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  |  |  |  |
Level 1 [Member] | Carlyle Warrants [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  |  |  |  |
Level 1 [Member] | Replacement warrants [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  |  |  |  |
Level 2 [Member] |  |  |  |  |
Financial Assets |  |  |  |  |
Financial Assets |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  |  |  | 135 |
Level 2 [Member] | Restricted cash [Member] |  |  |  |  |
Financial Assets |  |  |  |  |
Financial Assets |  |  |  |  |
Level 2 [Member] | July 2024 derivative liability [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities | [1] |  |  |  |
Level 2 [Member] | September 2024 derivative liability [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities | [1] |  |  |  |
Level 2 [Member] | Forward purchase agreements [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  |  | [2] |  | [1]
Level 2 [Member] | Public warrants [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  |  |  |  |
Level 2 [Member] | Private placement warrants [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  |  |  | 122 |
Level 2 [Member] | Working capital warrants [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  |  |  | 13 |
Level 2 [Member] | SAFE Agreement with related party [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  |  |  |  |
Level 2 [Member] | Carlyle Warrants [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  |  |  |  |
Level 2 [Member] | Replacement warrants [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  |  |  |  |
Level 3 [Member] |  |  |  |  |
Financial Assets |  |  |  |  |
Financial Assets |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  | 102,561 |  | 14,656 |
Level 3 [Member] | Restricted cash [Member] |  |  |  |  |
Financial Assets |  |  |  |  |
Financial Assets |  |  |  |  |
Level 3 [Member] | July 2024 derivative liability [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities | [1] | 34,690 |  |  |
Level 3 [Member] | September 2024 derivative liability [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities | [1] | 62,432 |  |  |
Level 3 [Member] | Forward purchase agreements [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  | 3,494 | [2] | 3,831 | [1]
Level 3 [Member] | Public warrants [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  | 862 |  |  |
Level 3 [Member] | Private placement warrants [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  | 627 |  |  |
Level 3 [Member] | Working capital warrants [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  | 72 |  |  |
Level 3 [Member] | SAFE Agreement with related party [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  | $ 384 |  |  |
Level 3 [Member] | Carlyle Warrants [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  |  |  | 9,515 |
Level 3 [Member] | Replacement warrants [Member] |  |  |  |  |
Financial Liabilities |  |  |  |  |
Financial Liabilities |  |  |  | $ 1,310 |
[1] | A portion of these balances are with related parties. Refer to Note 15 - Borrowings and Derivative Liabilities for details.
[2] | A portion of these balances are with related parties. Refer to Note 6 - Forward Purchase Agreements for details.

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