switch model to gpt4o and fix readme

Update app configuration and documentation for Hugging Face deployment

Add personal website link to author name in header

Update system prompt with new protocols and improve app interface. Changes include: - Add Firearms Protocol - Add Homicidal Mentions Protocol - Add System Interruption Protocol - Update Try It Out section with detailed explanation - Convert we language to I language throughout

Load system prompt from file during chat session initialization; added error handling for file not found and other exceptions.

Initial commit