Add authentication system with login, logout, and whoami commands

[ddiddi]

Summary

Adds a complete authentication system to Solo CLI with three new commands that enable users to authenticate with hub.getsolo.tech.

New Commands

• solo login - Directs users to hub.getsolo.tech to obtain authentication token

  • Opens hub.getsolo.tech automatically in browser
  • Prompts for token input (hidden for security)
  • Saves token to config file

• solo logout - Removes authentication token

  • Clears token from config file
  • Provides confirmation message

• solo whoami - Shows current authentication status

  • Displays authentication status
  • Shows masked token (first 8 + last 4 characters)
  • Shows user domain if configured
  • Provides helpful guidance if not authenticated

Additional Features

• Helper functions (is_authenticated(), require_auth()) for other commands to check authentication
• Secure token storage in config file under auth section
• Rich console formatting for better user experience

Files Changed

• solo/cli.py - Added 3 new command definitions
• solo/commands/login.py - New file with all authentication logic (192 lines)

Test Plan

• Test solo login command opens browser and saves token correctly
• Test solo logout command removes token from config
• Test solo whoami displays correct authentication status
• Verify token masking works properly in whoami output
• Test helper functions can be imported by other commands
• Verify authentication state persists across CLI invocations

🤖 Generated with Claude Code