Description

"A CLI test harness using execa or child_process.spawn would let us test:

Exit codes for non-interactive mode
Timeout/hang detection
Signal handling (SIGINT/SIGTERM)
Piped stdin scenarios" @will-lamerton

Use Case

Describe the problem this feature would solve or the use case it would enable

Proposed Solution

How you envision this feature working

Alternatives Considered

Any alternative solutions or features you've considered

Additional Context

• I have searched existing issues to ensure this is not a duplicate
• This feature aligns with the project's goals (local-first AI assistance)

Implementation Notes (optional)

If you have thoughts on how this could be implemented, share them here