- Update listServices to check for empty services slice in addition to error condition
- Update listSubscribers to check for empty subscribers slice in addition to error condition
- Add muted message when API returns empty results but no error
- Preserve existing warning message when API returns error
- Show sample/placeholder data in both empty and error cases
- Update HandleBilling to accept CLIConfig, return error, and use uiContext for all output
- Update HandleConfig to accept CLIConfig, return error, and use uiContext for all output
- Replace manual colorizer/icon initialization with uiContext helper methods
- Simplify error handling with uiContext.errorln, warn, success, info, muted methods
- Replace direct table creation with uiContext.newTable()
- Add HandleServices with command routing: list, status, restart, logs
- Add showServicesHelp with command descriptions and usage examples
- Add listServices to display services table with status, version, and uptime
- Add showServiceStatus to display service details with CPU/memory usage and last restart
- Add restartService to restart specified service
- Add showServiceLogs to display recent service