- Add docs/design-system.md with color tokens, typography, spacing, icons, responsive/PWA rules and component reuse guidelines
- Add CLAUDE.md with permanent instructions for Claude Code
- Add .github/instructions/design-system.instruction.md for GitHub Copilot
- Update .github/copilot-instructions.md to reference the design system
- Update Front-End/tailwind.config.js with color tokens (primary, secondary, tertiary, neutral) and font families (Manrope/Inter)
- Update Front-End/src/app/layout.js to load Manrope and Inter via next/font/google