fix: CodeRabbit auto-fixes for PR #10

[coderabbitai]

This stacked PR contains CodeRabbit auto-fixes for #10.

Files modified:

• src/adapters/process-transport.ts
• tests/adapters/process-transport.test.ts

[coderabbitai]

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[LogicDuke]

Closing this stacked autofix PR without merging.

Audit result:

• CI failed because the zero-argument test expected TIMED_OUT but received EXITED.
• The POSIX lifecycle repair is incomplete.
• The production changes lack the required adversarial regression coverage.

PR #10 remains unchanged. Its validated findings will be repaired separately under the controlled zero-defect workflow.