Missing end-to-end tests for all commands

[micheledicosmo]

Description

According to CLAUDE.md task rules, all new and changed functionalities must be tested automatically via end-to-end tests that run in non-interactive mode, but no e2e tests exist.

Current Issue

• No end-to-end tests for any commands
• Only basic test setup exists in tests directory
• Cannot verify commands work in non-interactive mode
• No automated testing of core functionality

Expected Behavior

According to CLAUDE.md:

• All new and changed functionalities must be tested automatically via end-to-end tests
• Tests must run the code in non-interactive mode
• Full coverage of command functionality

Tasks

• Set up e2e test framework (Jest with proper CLI testing utilities)
• Create e2e tests for claim-key command
• Create e2e tests for simple-organization-setup command
• Create e2e tests for chat command
• Create e2e tests for list command
• Create e2e tests for conversations command
• Create e2e tests for interactive mode flows
• Add test utilities for mocking API responses
• Set up CI to run e2e tests
• Add test data fixtures
• Ensure all tests run in non-interactive mode with --non-interactive flag