Consolidated Statements of Operations - USD ($)		12 Months Ended
		Sep. 28, 2024	Sep. 30, 2023	Sep. 24, 2022
Revenue:
Total revenue		$ 1,788,179,000	$ 1,176,891,000	$ 593,312,000
Cost of revenue:
Total cost of revenue		1,542,513,000	987,152,000	493,665,000
Gross profit		245,666,000	189,739,000	99,647,000
Operating expenses:
Research and development expenses		173,457,000	195,042,000	124,141,000
Selling, general, and administrative expenses		188,934,000	217,927,000	115,881,000
Total operating expenses		362,391,000	412,969,000	240,022,000
Operating loss		(116,725,000)	(223,230,000)	(140,375,000)
Other income, net		37,042,000	10,716,000	1,286,000
Loss before income tax and equity method investment		(79,683,000)	(212,514,000)	(139,089,000)
Income tax benefit (expense)		(4,212,000)	4,620,000	0
Loss from equity method investment		(777,000)	0	0
Net loss		(84,672,000)	(207,894,000)	(139,089,000)
Net loss attributable to Legacy Warehouse unitholders prior to the Business Combination		0	0	(72,134,000)
Net loss attributable to noncontrolling interests		(71,182,000)	(184,028,000)	(60,092,000)
Net loss attributable to common stockholders		$ (13,490,000)	$ (23,866,000)	$ (6,863,000)
Loss per share of Class A Common Stock:
Basic (in dollars per share)	[1]	$ (0.14)	$ (0.37)	$ (0.13)
Diluted (in dollars per share)	[1]	$ (0.14)	$ (0.37)	$ (0.13)
Weighted-average shares of Class A Common Stock outstanding:
Basic (in shares)		95,697,368	64,338,580	54,086,381
Diluted (in shares)		95,697,368	64,338,580	54,086,381
Systems
Revenue:
Total revenue		$ 1,705,440,000	$ 1,138,059,000	$ 567,993,000
Cost of revenue:
Total cost of revenue		1,466,841,000	940,076,000	464,179,000
Software maintenance and support
Revenue:
Total revenue		14,173,000	6,601,000	3,735,000
Cost of revenue:
Total cost of revenue		8,949,000	9,222,000	4,390,000
Operation services
Revenue:
Total revenue		68,566,000	32,231,000	21,584,000
Cost of revenue:
Total cost of revenue		$ 66,723,000	$ 37,854,000	$ 25,096,000

[1] Loss per share information has not been presented for periods prior to the Business Combination (as defined in Note 4, Mergers and Acquisitions), as it resulted in values that would not be meaningful to the users of these consolidated financial statements. Refer to Note 4, Mergers and Acquisitions for further information.