Polish user experience for initial launch

[coderabbitai]

Objective

Improve and polish the user interface and experience before launch.

Tasks

• Implement responsive design for mobile users
• Add loading states and proper error messages
• Create onboarding/tutorial for first-time users
• Improve code input and display with syntax highlighting
• Add user settings page
• Implement conversation history and search
• Add user feedback mechanism

Why this is important

A polished UI/UX is essential for retaining users after their first interaction with SocrAI.

References

• This issue was created from PR: impro #6