Add --json command-line flag to mo status that outputs system metrics
in JSON format without requiring a TTY environment.
This enables:
- Integration with GUI applications (e.g., native macOS apps)
- Use in automation scripts and monitoring systems
- Piping output to tools like jq for data extraction
- Recording metrics for analysis
Implementation:
- Add JSON struct tags to all metric types
- Add --json flag using Go's flag package
- Implement runJSONMode() for one-time metric collection
- Refactor main() to support both TUI and JSON modes
- Maintain 100% backward compatibility (default TUI unchanged)
Testing:
- All 454 existing tests pass
- JSON output validated with jq and python json.tool
- Pipeline and redirection work correctly
- No breaking changes to existing functionality
2a4eaf007b