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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
 12 Months Ended
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 $ 101,699 $ 14,791
Additions 37,687 137,108
Conversions (10,931) (13,556)
Net (gain)/loss recognized within Other non-operating income, net in the consolidated statement of operations (9,681) (36,644)
Balance ending 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 97,122
Additions 20,808 131,108
Conversions (10,931)
Net (gain)/loss recognized within Other non-operating income, net in the consolidated statement of operations (11,490) (33,986)
Balance ending 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 3,494 3,831
Additions
Conversions
Net (gain)/loss recognized within Other non-operating income, net in the consolidated statement of operations 471 (337)
Balance ending 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 384
Additions 6,000
Conversions (6,250)
Net (gain)/loss recognized within Other non-operating income, net in the consolidated statement of operations 151 634
Balance ending 535 384
Warrant liabilities [Member]    
Schedule of Liabilities by Class and Categorized Within Level 3 Under the Fair Value Hierarchy [Line Items]    
Balance beginning 699 10,960
Additions
Conversions (7,306)
Net (gain)/loss recognized within Other non-operating income, net in the consolidated statement of operations 1,187 (2,955)
Balance ending 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  
Additions 16,879  
Conversions  
Net (gain)/loss recognized within Other non-operating income, net in the consolidated statement of operations  
Balance ending $ 16,879