Use main's worktreeEnv test helper
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#2573 added an identical helper to the integration package.
Co-Authored-By: Claude Opus 5.5 (1M context) noreply@anthropic.com Entire-Checkpoint: 01M3CMXPNKPVD9XB99C1PHP9RF
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#2573 added an identical helper to the integration package.
Co-Authored-By: Claude Opus 5.5 (1M context) noreply@anthropic.com Entire-Checkpoint: 01M3CMXPNKPVD9XB99C1PHP9RF