- Update version from v1.0 to v2.0 throughout document
- Replace Vertex AI/Google Cloud setup with Google AI API configuration
- Add .env file configuration as recommended approach
- Update prerequisites to remove Google Cloud SDK requirement
- Add step-by-step API key setup instructions
- Update model references to gemini-2.5-pro
- Add security notes for credential protection
- Update installation directory path
- Update version history with v2.0 features
- Update roadmap version numbers to v2.x series