- Implement proactive token refresh 5 minutes before expiry (1-hour tokens) - Add call-safe refresh logic that postpones refresh during active calls - Replace fixed-interval refresh with smart scheduling based on token expiry - Add proper cleanup on page unload to prevent memory leaks - Enhance error handling with retry mechanisms for network failures - Apply to both admin browser phone page and frontend shortcode 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>