Other Non-Operating Income, Net - Schedule of Other Non-Operating Income, Net (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mar. 29, 2026 |
Mar. 30, 2025 |
Dec. 28, 2025 |
Dec. 29, 2024 |
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| Schedule of Other Non-Operating Income, Net [Line Items] | ||||||||||||||||||||
| Gain on remeasurement of derivative liabilities | [1] | $ 26,608 | $ 15,127 | |||||||||||||||||
| Change in fair value of forward purchase agreement liabilities | [2] | (1,142) | 269 | |||||||||||||||||
| Change in fair value of SAFE Agreement with related party | (44) | (20) | $ (151) | $ 616 | ||||||||||||||||
| Change in fair value of FACT public, private placement and working capital warrants | 615 | (1,092) | 2,800 | 1,258 | ||||||||||||||||
| Change in fair value of Notes valued at fair value | (320) | |||||||||||||||||||
| Change in fair value of Deferred Sunder Consideration with related party | 2,306 | |||||||||||||||||||
| Change in fair value of Deferred Ambia Consideration | 2,943 | |||||||||||||||||||
| Other, net | (205) | [3] | 292 | [3] | 1,279 | [4] | (221) | [4] | ||||||||||||
| Total Other non-operating income, net | $ 30,761 | [5] | $ 14,576 | [5] | $ 9,347 | [6] | $ 7,932 | [6] | ||||||||||||
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