Consolidated Statement Of Cash Flows - USD ($) $ in Thousands		6 Months Ended	12 Months Ended
		Dec. 31, 2024	Dec. 31, 2025
Cash flows from operating activities:
Net loss		$ (46,979)	$ (127,410)
Adjustments to reconcile net loss to net cash used in operating activities:
Change in fair value of Convertible Notes payable	[1]	12,600	21,584
Stock-based compensation expense		1,256	20,009
Non-cash lease expense			83
Accretion/amortization on investments			(784)
Depreciation expense			26
Changes in operating assets and liabilities:
Prepaid expenses and other current assets		(265)	(11,969)
Other assets			(38)
Accounts payable		1,290	361
Accrued expenses and other current liabilities		3,980	3,944
Operating lease liabilities			40
Related party accrued expenses and other current liabilities		5,504	(535)
Net cash used in operating activities		(22,614)	(94,689)
Cash flows from investing activities:
Purchases of investments			(261,194)
Proceeds from sales/maturities of investments			14,415
Payment of security deposit			(31)
Purchases of property and equipment			(196)
Net cash used in investing activities			(247,006)
Cash flows from financing activities:
Proceeds from issuance of convertible notes payable	[2]	95,000
Payment of deferred offering costs		(3,000)
Proceeds from the Pre-Closing Financing, net of $14,548 offering costs			189,111
Proceeds from stock option exercises			88
Proceeds from ESPP issuances			296
Cash acquired in connection with the reverse recapitalization			156
Net cash provided by financing activities		92,000	360,768
Effect of exchange rates on cash and cash equivalents			(21)
Net increase in cash and cash equivalents		69,386	19,052
Cash and cash equivalents at the beginning of the year		69,386	69,386
Cash and cash equivalents at the end of the period		69,386	88,438
Supplemental disclosure of non-cash operating and financing activities:
Unpaid offering costs		$ 145	840
Deferred offering costs reclassified from other assets to equity			2,998
Operating lease liability arising from obtaining right-of-use asset			773
Assets acquired in connection with the reverse recapitalization			416
Other liabilities assumed in connection with the reverse recapitalization			(1,020)
Reclassification of warrant liability			11,143
Convertible note principal and non-cash accrued interest converted to common stock and pre-funded warrants			129,184
Non-cash exchange of Pre-Merger Jade Series Seed Convertible Preferred Stock for Company Series A Non-Voting Convertible Preferred Stock			2
December 2025 PIPE Financing
Cash flows from financing activities:
Proceeds from the PIPE Financing, net of offering costs			44,743
October 2025 PIPE Financing
Cash flows from financing activities:
Proceeds from the PIPE Financing, net of offering costs			$ 126,374

[1] Includes related party amount of $4.6 million for the year ended December 31, 2025 and $2.7 million for the period from June 18, 2024 (inception) to December 31, 2024 (see Note 13).

[2] Includes no related party amount for the year ended December 31, 2025 and $20.0 million for the period from June 18, 2024 (inception) to December 31, 2024.