Missing entity dialog GUI for navigation

[micheledicosmo]

Description

According to CLAUDE.md requirements, entities should be selectable via a CLI GUI Dialog similar to Commander for navigating entity hierarchies, but this is not implemented.

Current Issue

• No GUI dialog for entity selection
• Cannot navigate Organizations → Users → Replicas hierarchy
• Missing refresh functionality with 'r' key
• Current entity selection is basic text input only

Expected Behavior

According to CLAUDE.md:

• Entities are Selectable via a CLI GUI Dialog similar to Commander
• Allows navigation of entity hierarchy via arrows (Organizations → Users → Replicas)
• Pressing 'r' refreshes entities of current level and re-lists them
• Current selected entity remains selected after refresh

Tasks

• Research and choose appropriate CLI GUI library (inquirer with custom prompts or blessed)
• Create hierarchical entity selection component
• Implement Organizations → Users → Replicas navigation flow
• Add arrow key navigation support
• Implement 'r' key refresh functionality
• Maintain selection state during refresh
• Integrate entity dialog into relevant commands
• Add tests for entity navigation
• Update all commands that need entity selection