* Emit an explicit "Started" message and support sending signals
Co-authored-by: Fedor Korotkov <fkorotkov@openai.com>
* Run exec commands in dedicated process groups
* Disable wsl_v5 linter
* Clean up exec processes on stream failures
* Fix gosec linter error
* Wrap exec signals in a message
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Co-authored-by: Fedor Korotkov <fkorotkov@openai.com>