Stream output handling issues

[konard]

🐛 Bug Description

Stream output handling has issues with real-time output capture and processing, particularly for long-running commands or commands with continuous output.

🔴 Impact

• Can't monitor real-time command output
• Long-running processes appear frozen
• Progress indicators don't work
• Log streaming is broken

📝 Problem Details

Commands that produce streaming output (like `tail -f`, `watch`, build processes) don't properly stream their output through command-stream.

🔧 Expected Behavior

Real-time output should be available as it's produced, not buffered until completion.

🔗 References

• Full test: https://github.com/deep-assistant/hive-mind/blob/main/command-stream-issues/issue-07-stream-output.mjs