- Add HandleDeploy with command routing: status, start, rollback, history
- Add showDeployHelp with command descriptions and usage examples
- Add showDeployStatus to display environment status with version and last deploy timestamp
- Add startDeployment to initiate deployment with build, test, package, and Kubernetes deployment steps
- Add rollbackDeployment to revert to previous version with validation and
- Add HandleBilling with command routing: invoices, payments, generate
- Add showBillingHelp with command descriptions and usage examples
- Add handleInvoices to display invoice list with ID, date, status, amount, and subscriber
- Add handlePayments to display payment transactions with ID, date, amount, method, and status
- Add generateInvoice to create invoices for subscribers with ID validation
- Add Dashboard model with table, spinner, help, and key bindings for service status display
- Add keyMap with shortcuts: refresh (r), subscribers (s), services (v), billing (b), monitoring (m), config (c), deploy (d), help (?), quit (q)
- Add service status table with columns: Service, Status, CPU, Memory, Uptime, Version
- Add initial service data: API Server, Charging Engine, Packet Gateway, Web Dashboard, Prometheus,