v3.26.1
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
Convertible debt at fair value [Member]        
Schedule of Liabilities by Class and Categorized Within Level 3 Under the Fair Value Hierarchy [Line Items]        
Balance beginning      
Additions 10,710      
Conversions      
Net (gain)/loss recognized within Other non-operating income, net in the consolidated statement of operations 320      
Balance ending 11,030    
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 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