Property and Equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 29, 2025	Sep. 28, 2024
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 170,589	$ 131,232
Less accumulated depreciation	(46,883)	(34,123)
Property and equipment, net	123,706	97,109
Computer equipment and software, furniture and fixtures, test equipment, and other equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	153,937	114,515
Internal use software
Property, Plant and Equipment [Line Items]
Total property and equipment	6,366	7,141
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 10,286	$ 9,576