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Stock-Based Compensation - Schedule of RSU Activity (Details) - Restricted Stock Units [Member] - $ / shares
 9 Months Ended 12 Months Ended
Sep. 28, 2025
Dec. 29, 2024
Schedule of RSU Activity [Line Items]    
Number of RSUs, Unvested, Beginning balance 1,982,135 58,097
Weighted Average Grant Date Fair Value, Unvested, Beginning balance $ 1.78 $ 2.07
Number of RSUs, Granted 22,235,871 2,593,097
Weighted Average Grant Date Fair Value, Granted $ 1.73 $ 1.78
Number of RSUs, Vested and released (4,318,313) (669,059)
Weighted Average Grant Date Fair Value, Vested and released $ 1.74 $ 1.73
Number of RSUs, Cancelled or forfeited (3,756,238)
Weighted Average Grant Date Fair Value, Cancelled or forfeited $ 1.73
Number of RSUs, Unvested, Ending balance 16,143,455 1,982,135
Weighted Average Grant Date Fair Value, Unvested, Ending balance $ 1.73 $ 1.78