Summary

To make it easier to test A2A agent I would like to have an interactive mode. Where a user can simply chat with the A2A server in streaming mode or background mode.

Consider using Modern Framework Bubble Tea from Charm and Lipgloss for styling.

Kind of like a chat interface for A2A, keep it also simple, not too many features to avoid binary size.

Acceptance Criteria

• It's possible to use interactive mode
• Interactive mode supports chat in streaming (realtime) mode
• Interactive mode supports chat in background (long running tasks) mode
• It's documented