Gemini Authentication Management Comprehensive authentication setup and management for Gemini CLI, supporting OAuth, API keys, and Vertex AI. Authentication Methods 1. Google OAuth (Free Tier) Benefits: - No API key management - 60 requests/minute - 1,000 requests/day - Access to Gemini 2.5 Pro - 1M token context window 2. API Key Setup Benefits: - Programmatic access - No browser required - Scriptable workflows 3. Vertex AI (Enterprise) Benefits: - Enterprise security - Higher rate limits - Advanced features - Service account support Authentication Configuration Priority Order Gemini CLI che…