Test Claude Code with debug output #101

Please implement the following changes:

1. Add a 'New Chat' button to the chat interface that clears the conversation and starts fresh
2. Button styling: Place it next to or above the chat area with a clean design
3. Functionality: When clicked, it should:
   • Clear conversation history
   • Clear the chat display
   • Clear session ID to start a new session
   • Focus on the input field for new query

Implementation details:

• Add button to frontend/index.html in the chat header area
• Add click handler in frontend/script.js to clear chat and session
• Update frontend/style.css for button styling (should match dark/light theme)

Testing: After implementation, test that:

• Clicking the button clears all previous messages
• A new session ID is generated
• The input field is ready for new input

@claude please implement these changes using the debug output to help identify any issues