- Move all Docker-related files to docker/ directory
- Consolidate DOCKER-README.md and DOCKER_GUIDE.md into docker/README.md
- Update docker/Taskfile.yaml with refined paths and new tasks
- Update root Taskfile.yaml to preserve only native build tasks
- Update docker-compose.yml to map config to root .config/
- Expand docker/README.md with comprehensive guides and troubleshooting