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Fair Value Measurements - Schedule of Liabilities by Class and Categorized Within Level 3 Under the Fair Value Hierarchy (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 29, 2026 | Mar. 30, 2025 | Dec. 28, 2025 | Dec. 29, 2024
Schedule of Liabilities by Class and Categorized Within Level 3 Under the Fair Value Hierarchy [Line Items] |  |  |  |
Balance beginning | $ 118,774 | $ 101,699 | $ 101,699 | $ 14,791
Additions | 19,338 |  | 37,687 | 137,108
Conversions | (1,883) |  | (10,931) | (13,556)
Net (gain)/loss recognized within Other non-operating income, net in the consolidated statement of operations | (28,255) | (14,887) | (9,681) | (36,644)
Balance ending | 107,974 | 86,812 | 118,774 | 101,699
Derivative liabilities [Member] |  |  |  |
Schedule of Liabilities by Class and Categorized Within Level 3 Under the Fair Value Hierarchy [Line Items] |  |  |  |
Balance beginning | 95,509 | 97,122 | 97,122 |
Additions | 2,297 |  | 20,808 | 131,108
Conversions | (1,883) |  | (10,931) |
Net (gain)/loss recognized within Other non-operating income, net in the consolidated statement of operations | (26,608) | (15,127) | (11,490) | (33,986)
Balance ending | 69,315 | 81,995 | 95,509 | 97,122
Forward Purchase Agreements [Member] |  |  |  |
Schedule of Liabilities by Class and Categorized Within Level 3 Under the Fair Value Hierarchy [Line Items] |  |  |  |
Balance beginning | 3,965 | 3,494 | 3,494 | 3,831
Additions |  |  |  |
Conversions |  |  |  |
Net (gain)/loss recognized within Other non-operating income, net in the consolidated statement of operations | 1,142 | (268) | 471 | (337)
Balance ending | 5,107 | 3,226 | 3,965 | 3,494
SAFE Agreements [Member] |  |  |  |
Schedule of Liabilities by Class and Categorized Within Level 3 Under the Fair Value Hierarchy [Line Items] |  |  |  |
Balance beginning | 535 | 384 | 384 |
Additions |  |  |  | 6,000
Conversions |  |  |  | (6,250)
Net (gain)/loss recognized within Other non-operating income, net in the consolidated statement of operations | 44 | 20 | 151 | 634
Balance ending | 579 | 404 | 535 | 384
Warrant liabilities [Member] |  |  |  |
Schedule of Liabilities by Class and Categorized Within Level 3 Under the Fair Value Hierarchy [Line Items] |  |  |  |
Balance beginning | 1,886 | 699 | 699 | 10,960
Additions |  |  |  |
Conversions |  |  |  | (7,306)
Net (gain)/loss recognized within Other non-operating income, net in the consolidated statement of operations | (210) | 488 | 1,187 | (2,955)
Balance ending | 1,676 | 1,187 | 1,886 | 699
Deferred Ambia Consideration Shares [Member] |  |  |  |
Schedule of Liabilities by Class and Categorized Within Level 3 Under the Fair Value Hierarchy [Line Items] |  |  |  |
Balance beginning | 16,879 |  |  |
Additions | 6,331 |  | 16,879 |
Conversions |  |  |  |
Net (gain)/loss recognized within Other non-operating income, net in the consolidated statement of operations | (2,943) |  |  |
Balance ending | $ 20,267 |  | $ 16,879 |

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