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Other Non-Operating Income, Net - Schedule of Other Non-Operating Income, Net (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 28, 2025 | Dec. 29, 2024
Schedule of Other income (Expense), Net [Line Items] |  |  |
Change in fair value of derivative liabilities | [1],[2] | $ 11,490 | $ 33,986
Change in fair value of FACT public, private placement and working capital warrants |  | (2,800) | (1,258)
Loss on conversion of SAFE agreements to common stock with related party |  |  | (1,250)
Change in fair value of SAFE Agreement with related party |  | (151) | 616
Change in fair value of forward purchase agreement liabilities | [3],[4] | (471) | 337
Loss on issuance of derivative liabilities | [5] |  | (24,688)
Other financing costs |  |  | (3,769)
Other, net | [6] | 1,279 | (221)
Total Other non-operating income, net | [7] | 9,347 | 7,932
Redeemable convertible preferred stock warrant liability [Member] |  |  |
Schedule of Other income (Expense), Net [Line Items] |  |  |
Change in fair value |  |  | 2,869
Change in fair value of Carlyle warrants [Member] |  |  |
Schedule of Other income (Expense), Net [Line Items] |  |  |
Change in fair value |  |  | $ 1,310
[1] | Includes $3.5 gain and $0.3 million gain in 2025 and 2024, respectively, in connection with the change in the fair value of derivative liabilities with related parties, the Massey Trust and Carlyle (as later defined in Note 10 – Borrowings and Derivative Liabilities).
[2] | Includes a gain of $3.5 million and $0.3 million on the change in the fair value of derivative liabilities with related parties in the fiscal years ended December 28, 2025 and December 29, 2024, respectively. Refer to Note 10 – Borrowings and Derivative Liabilities for details.
[3] | Change in fair value of forward purchase agreement liabilities with related parties was income of $0.1 million in each of 2025 and 2024, respectively.
[4] | Includes related party income of $0.1 million in each of the years ended December 28, 2025 and December 29, 2024.
[5] | Includes a loss of $3.0 million on the issuance of a derivative liability with a related party in the fiscal year ended December 29, 2024. Refer to Note 10 – Borrowings and Derivative Liabilities for details.
[6] | Includes non-cash income with related party of $0.1 million in the fiscal year ended December 28, 2025.
[7] | Includes the following related party transactions (in millions): Fiscal Year Ended December 28, 2025 December 29, 2024 Loss on issuance of derivative liabilities $ — $ (3.0 ) Gain on remeasurement of derivative liabilities (Refer to Note 10 – Borrowings and Derivative Liabilities for details.) 3.5 0.3 Gain (loss) due to change in fair value of Forward Purchase Agreements 0.1 0.1 Loss on conversion of SAFE Agreements to common stock — (0.7 ) Change in fair value of SAFE Agreement (0.2 ) — Gain due to change in fair value of Carlyle warrants — 2.9

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