Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Apr. 27, 2024	Apr. 29, 2023	Apr. 30, 2022
Cash flows from operating activities:
Net loss	$ (28,369)	$ (16,547)	$ (22,176)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	13,771	9,514	4,793
Share-based compensation	39,022	23,516	9,188
Warrant contra revenue	3,925	1,220	640
Write-downs for excess and obsolete inventory	4,354	5,693	1,444
Impairment of assets	765	2,407	4,887
Changes in operating assets and liabilities
Accounts receivable	(10,121)	(20,017)	(15,879)
Inventories	15,762	(24,379)	(21,677)
Contract assets	(12,117)	1,609	(4,673)
Prepaid and other current assets	(7,719)	512	2,808
Other non-current assets	(654)	(7,977)	(1,654)
Accounts payable	8,806	(3,843)	4,748
Accrued expenses, compensation and other liabilities	5,703	491	9,601
Deferred revenue	(391)	3,186	(2,882)
Net cash provided by (used in) operating activities	32,737	(24,615)	(30,832)
Cash flows from investing activities:
Purchases of property and equipment	(15,652)	(21,713)	(17,580)
Purchases of short-term investments	(403,587)	(159,228)	0
Maturities of short-term investments	169,754	50,000	0
Net cash used in investing activities	(249,485)	(130,941)	(17,580)
Cash flows from financing activities:
Proceeds from issuance of ordinary shares in connection with public offering, net of offering costs	173,431	0	194,205
Payments on technology license obligations	(3,052)	(616)	0
Proceeds from employee share incentive plans	7,055	5,501	2,731
Tax withheld related to RSU settlement	(2,158)	0	0
Proceeds from issuance of convertible preferred shares, net of issuance costs	0	0	7,245
Net cash provided by financing activities	175,276	4,885	204,181
Effect of exchange rate changes on cash	(169)	(68)	(204)
Net increase (decrease) in cash and cash equivalents	(41,641)	(150,739)	155,565
Cash and cash equivalents at beginning of the year	108,583	259,322	103,757
Cash and cash equivalents at end of the year	66,942	108,583	259,322
Supplemental cash flow information:
Income taxes paid	(1,054)	(1,204)	(427)
Purchases of property and equipment included in accounts payable, accrued expenses and other liabilities	8,287	10,909	168
Conversion of convertible preferred shares into ordinary shares upon initial public offering	$ 0	$ 0	$ 205,210