Replace build-time NEXT_PUBLIC_* environment variables with server-side
runtime configuration. This allows changing the Pastel API URL without
rebuilding the Docker image.
**Changes:**
- Add Next.js API proxy route at /api/pastel/[...path] for server-side proxying
- Update API client to use proxy endpoint instead of direct API URL
- Replace NEXT_PUBLIC_API_URL with server-side PASTEL_API_URL
- Remove build arguments from Dockerfile (no longer needed)
- Simplify docker-compose.yml to use runtime environment variables only
- Update all .env files to reflect new configuration approach
- Add comprehensive DOCKER.md documentation
**Benefits:**
- No rebuild required to change API URL
- Same image works across all environments (dev/staging/prod)
- Better security (API URL not exposed in client bundle)
- Simpler deployment and configuration management
**Migration:**
Old: NEXT_PUBLIC_API_URL (build-time, embedded in bundle)
New: PASTEL_API_URL (runtime, read by server proxy)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Install curl in Alpine image for health checks
- Add ARG and ENV declarations for NEXT_PUBLIC_* variables in builder stage
- Pass build args from docker-compose.yml to Dockerfile
- Update health checks to use curl instead of node -e
- Update .env.example with helpful comments for Docker vs local dev
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Add comprehensive documentation and planning for Pastel UI:
- Complete architecture design using Next.js 16 and Tailwind CSS 4
- Detailed development guide (CLAUDE.md) with all patterns and conventions
- Feature-rich README with keyboard shortcuts and export formats
- Project structure and technology stack decisions
Features planned:
- Color playground with multi-format support
- Palette generation (harmony, distinct, gradient)
- Accessibility tools (WCAG, color blindness simulation)
- Named colors explorer (148 CSS/X11 colors)
- Batch operations with CSV/JSON import/export
- Command palette (Cmd+K) and keyboard shortcuts
- Dark/light mode with system preference detection
- Shareable links with URL state
Tech stack:
- Next.js 16 with App Router and Server Components
- React 19 with latest concurrent features
- Tailwind CSS 4 with CSS-first configuration
- TypeScript strict mode
- React Query for server state
- Zustand for client state
- Framer Motion for animations
Ready for implementation phase.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
