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Summary of Significant Accounting Policies - Schedule of Components of Prepaid Expenses and Other Current Assets (Details) - USD ($)
$ in Thousands
Sep. 28, 2025
Dec. 29, 2024
Dec. 31, 2023
Schedule of Components of Prepaid Expenses and Other Current Assets [Abstract]      
Deferred costs $ 20,737 $ 3,759  
Other 93 4,447  
Total prepaid expenses and other current assets $ 20,830 $ 8,206 $ 5,817