test(cli): avoid built binary in help snapshots

[radist2s]

Fixes the main CI failure by testing CLI help output through source main() instead of the built bin.mjs, with a file-level Vitest timeout for slower CI.

[changeset-bot]

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Latest commit: 85ba182

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[radist2s]

Closing this: the fix addressed the test timeout symptom instead of the Turbo task contract root cause.