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Stock-Based Compensation (Tables) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 28, 2025 | Dec. 29, 2024
Stock-Based Compensation [Abstract] |  |
Schedule of Stock Option Activity | The information below summarizes the stock option activity under the Plans.
|  | Number of Shares |  |  | Weighted Average Exercise Price per Share |  |  | Weighted Average Contractual Term (Years) |  |  | Aggregate Intrinsic Value (in thousands) |
Outstanding—December 29, 2024 |  |  | 9,997,233 |  |  | $ | 2.77 |  |  |  | 5.29 |  |  | $ | 6,356 |
Options granted |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |
Options exercised |  |  | (712,467 | ) |  |  | 0.73 |  |  |  |  |  |  |  | 88 |
Options canceled |  |  | (4,874,689 | ) |  |  | 2.53 |  |  |  |  |  |  |  |  |
Outstanding—September 28, 2025 |  |  | 4,410,078 |  |  |  | 3.04 |  |  |  |  |  |  |  | 2,157 |
Vested and expected to vest— September 28, 2025 |  |  | 4,410,078 |  |  |  | 3.04 |  |  |  |  |  |  |  | 2,157 |
Vested and exercisable— September 28, 2025 |  |  | 2,364,439 |  |  |  | 6.98 |  |  |  |  |  |  |  | 722 |
| The information below summarizes the stock option activity under the Plans.
|  | Number of Shares |  |  | Weighted Average Exercise Price per Share |  |  | Weighted Average Contractual Term (Years) |  |  | Aggregate Intrinsic Value (in thousands) |
Outstanding-December 31, 2023 |  |  | 11,716,646 |  |  | $ | 3.48 |  |  |  | 8.53 |  |  | $ | 2,756 |
Options granted |  |  | 6,121,251 |  |  |  | 0.93 |  |  |  |  |  |  |  |  |
Options exercised |  |  | (398,883 | ) |  |  | 0.77 |  |  |  |  |  |  |  | 39 |
Options canceled |  |  | (7,441,781 | ) |  |  | 0.17 |  |  |  |  |  |  |  |  |
Outstanding-December 29, 2024 |  |  | 9,997,233 |  |  |  | 2.77 |  |  |  | 5.29 |  |  |  | 6,356 |
Vested and expected to vest- December 29, 2024 |  |  | 9,997,233 |  |  |  | 2.77 |  |  |  | 5.29 |  |  |  | 6,356 |
Vested and exercisable- December 29, 2024 |  |  | 4,264,705 |  |  |  | 3.54 |  |  |  | 3.75 |  |  |  | 1,857 |
Schedule of RSU Activity | The information below summarizes the RSU activity.
|  | Number of RSUs |  |  | Weighted Average Grant Date Fair Value |
Unvested at December 29, 2024 |  |  | 1,982,135 |  |  | $ | 1.78 |
Granted |  |  | 22,235,871 |  |  |  | 1.73 |
Vested and released |  |  | (4,318,313 | ) |  |  | 1.74 |
Cancelled or forfeited |  |  | (3,756,238 | ) |  |  | 1.73 |
Unvested at September 28, 2025 |  |  | 16,143,455 |  |  |  | 1.73 |
| The information below summarizes the RSU activity.
|  | Number of RSUs |  |  | Weighted Average Grant Date Fair Value |
Unvested at December 31, 2023 |  |  | 58,097 |  |  | $ | 2.07 |
Granted |  |  | 2,593,097 |  |  |  | 1.78 |
Vested and released |  |  | (669,059 | ) |  |  | 1.73 |
Cancelled or forfeited |  |  | - |  |  |  | - |
Unvested at December 29, 2024 |  |  | 1,982,135 |  |  |  | 1.79 |
Schedule of Fair Value of Stock-Based Compensation |  | The following assumptions were used to calculate the fair value of stock-based compensation:
|  | Fiscal Year Ended |
|  | December 29, |  |  | December 31, |
|  | 2024 |  |  | 2023 |
Expected term (in years) |  |  | 5.00 - 6.32 |  |  |  | 5.50 - 6.32 |
Expected volatility |  |  | 58.45% - 62.39 | % |  |  | 77.0 | %
Risk-free interest rate |  |  | 3.81% - 4.71 | % |  |  | 1.7% - 4.7 | %
Expected dividends |  |  | 0.0 | % |  |  | 0.0 | %
Schedule of Stock-Based Compensation Expense |  | The following table summarizes stock-based compensation expense and its allocation within the accompanying consolidated statements of operations and comprehensive loss (in thousands):
|  | Fiscal Year Ended |
|  | December 29, |  |  | December 31, |
|  | 2024 |  |  | 2023 |
Cost of revenues |  | $ | 157 |  |  | $ | 84 |
Sales and marketing |  |  | 598 |  |  |  | 487 |
General and administrative |  |  | 2,312 |  |  |  | 2,252 |
Loss from discontinued operations, net of tax |  |  | - |  |  |  | 2,376 |
Total stock-based compensation expense |  | $ | 3,067 |  |  | $ | 5,199 |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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