- Test OutputCapture._is_prompt for prompt pattern detection
- Test OutputCapture.capture_until_complete for output capture
- Test CommandExecutor._detect_errors for error keyword detection
- Test CommandExecutor.execute for full command execution flow
- Test CommandResult dataclass for result storage
- Test CommandExecutor.send_command for pane interaction
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
