Consolidated Statements of Convertible Preferred Shares and Shareholders' Equity (Deficit) - USD ($) shares in Thousands, $ in Thousands	Total	Series D	Series D+	Ordinary Shares	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance (in shares) at Apr. 30, 2021	50,809
Beginning balance at Apr. 30, 2021	$ 197,965
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of Series D/D+ convertible preferred shares, net of issuance costs (in shares)		1,251
Issuance of Series D/D+ convertible preferred shares, net of issuance costs		$ 7,245
Conversion of preferred shares into ordinary shares (in shares)			(52,060)
Conversion of preferred shares into ordinary shares			$ (205,210)
Ending balance (in shares) at Apr. 30, 2022	0
Ending balance at Apr. 30, 2022	$ 0
Beginning balance (in shares) at Apr. 30, 2021				68,282
Beginning balance at Apr. 30, 2021	(55,431)			$ 3	$ 12,592	$ 227	$ (68,253)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of preferred shares to ordinary shares (in shares)				52,060
Conversion of preferred shares into ordinary shares	205,210			$ 3	205,207
Issuance of ordinary shares in connection with initial and secondary public offering, net of offering costs (in shares)				21,384
Issuance of ordinary shares in connection with initial and secondary public offering, net of offering costs	194,205			$ 1	194,204
Ordinary shares issued under employee share incentive plan (in shares)				3,029
Ordinary shares issued under employee share incentive plans	2,731				2,731
Share-based compensation	9,188				9,188
Warrant contra revenue	640				640
Total comprehensive gain (loss)	(22,380)					(204)	(22,176)
Ending balance (in shares) at Apr. 30, 2022				144,755
Ending balance at Apr. 30, 2022	$ 334,163			$ 7	424,562	23	(90,429)
Ending balance (in shares) at Apr. 29, 2023	0
Ending balance at Apr. 29, 2023	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Ordinary shares issued under employee share incentive plan (in shares)				3,896
Ordinary shares issued under employee share incentive plans	5,497				5,497
Share-based compensation	23,516				23,516
Warrant contra revenue	1,220				1,220
Total comprehensive gain (loss)	$ (16,761)					(214)	(16,547)
Ending balance (in shares) at Apr. 29, 2023	148,651			148,651
Ending balance at Apr. 29, 2023	$ 347,635			$ 7	454,795	(191)	(106,976)
Ending balance (in shares) at Apr. 27, 2024	0
Ending balance at Apr. 27, 2024	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of ordinary shares in connection with initial and secondary public offering, net of offering costs (in shares)				10,440
Issuance of ordinary shares in connection with initial and secondary public offering, net of offering costs	173,416			$ 1	173,415
Ordinary shares issued under employee share incentive plan (in shares)				5,329
Ordinary shares issued under employee share incentive plans	7,055				7,055
Share-based compensation	39,022				39,022
Warrant contra revenue	3,925				3,925
Tax withheld related to RSU settlement (shares)				(115)
Tax withheld related to RSU settlement	(2,158)				(2,158)
Total comprehensive gain (loss)	$ (28,697)					(328)	(28,369)
Ending balance (in shares) at Apr. 27, 2024	164,305			164,305
Ending balance at Apr. 27, 2024	$ 540,198			$ 8	$ 676,054	$ (519)	$ (135,345)