Log child process signal and execution metadata

[MarceloRGonc]

Part of OPS-4680

[linear]

OPS-4680

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[Copilot]

Pull request overview

This PR (part of OPS-4680) enhances observability for command execution in the openops package by logging additional child-process execution metadata when commands exit, improving debugging of failures (including signal terminations).

Changes:

• Capture both exitCode and termination signal from the child process close event.
• Log additional execution metadata (pid, signal, byte sizes for stdout/stderr) on command completion.

Review Summary

Blocking

• close can yield a null exit code (e.g., signal termination), but CommandResult.exitCode is typed as number. The updated code should normalize null to a non-zero numeric exit code (while still logging signal). (See PR comment.)

Non-blocking

• None

Merge recommendation

• Do not merge