Major Updates:
- Enhanced system prompt with strict Thai language enforcement and anti-looping rules
- Added comprehensive order creation flow with N8N backend integration
- Implemented fixed menu pricing and strict order summary templates
- Created Gemini Live optimized prompt with audio handling and session management
- Added complete knowledge base with menu codes, promotions, and dietary information
- Enhanced .gitignore with Pizza Hut specific security and temporary files
- Added monitoring guides and documentation for AVA system integration

Key Features:
- 6-step customer interaction workflow (Caller ID → Address → Order → Summary → Payment → Post-Call)
- Price calculation logic for Ala Carte and Promotions (BEF/BXF rules)
- Complete JSON payload templates for order creation
- Error handling with silent retries and guest fallback
- Comprehensive logging at all call stages
- Anti-looping mechanisms and ask-once rules