Changes:
- Updated README.md with current Phase 2.3 completion status
- Added detailed development progress section
- Added backend API endpoints documentation
- Added environment configuration guide
- Added local development and Docker quick start
- Added deployment instructions
New Documentation:
- thoughts/CONFIG.md - Comprehensive configuration guide
- thoughts/QUICKSTART.md - 5-minute quick start guide
All configuration files are now documented and up-to-date.
