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Fair Value Measurements (Details) - Schedule of Fair Value on a Recurring Basis Using Level 3 Inputs - USD ($) $ in Thousands | 6 Months Ended
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Mar. 31, 2024 | Mar. 30, 2023
Earnout Liability [Member] |  |
Schedule of Fair Value on a Recurring Basis Using Level 3 Inputs [Line Items] |  |
Balance, beginning |  |
Liabilities recognized | 33,559 |
Conversion to Class A Common Stock in the Merger |  |
Change in fair value included in net loss | (29,938) |
Balance, ending | 3,621 |
PIPE Make-Whole Liability [Member] |  |
Schedule of Fair Value on a Recurring Basis Using Level 3 Inputs [Line Items] |  |
Balance, beginning |  |
Liabilities recognized | 2,071 |
Conversion to Class A Common Stock in the Merger |  |
Change in fair value included in net loss | (432) |
Balance, ending | 1,639 |
Private Warrants and Other Warrants [Member] |  |
Schedule of Fair Value on a Recurring Basis Using Level 3 Inputs [Line Items] |  |
Balance, beginning |  |
Liabilities recognized | 882 |
Conversion to Class A Common Stock in the Merger |  |
Change in fair value included in net loss | (46) |
Balance, ending | 836 |
SAFEs [Member] |  |
Schedule of Fair Value on a Recurring Basis Using Level 3 Inputs [Line Items] |  |
Balance, beginning | 1,512 |
Liabilities recognized |  |
Conversion to Class A Common Stock in the Merger | (1,522) |
Change in fair value included in net loss | 10 |
Balance, ending |  |
SAFEs [Member] |  |
Schedule of Fair Value on a Recurring Basis Using Level 3 Inputs [Line Items] |  |
Balance, beginning |  | $ 1,983
Change in fair value included in net loss |  | 558
Balance, ending |  | $ 2,541

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