- Replace if-else chain with switch statement for severity level styling
- Maintain existing logic: High maps to ERROR style, Medium maps to WARNING style
- Improve code readability and maintainability
- 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 HandleMonitoring with command routing: metrics, alerts, health, logs
- Add showMonitoringHelp with command descriptions and usage examples
- Add showMetrics to display system metrics with API response time, database connections, CPU/memory usage, disk usage, network throughput, active subscribers, and request rate
- Add showAlerts to display active alerts table with severity, service, message, and timestamp
- Add showHealth to display
nutcas3