Add Docker support and documentation updates

- Add Dockerfile for containerized builds
- Add .dockerignore for cleaner builds
- Add CLAUDE.md for development guidance
- Update README and docs

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

.dockerignore

@@ -0,0 +1,35 @@
+# Git
+.git
+.gitignore
+
+# Python
+__pycache__
+*.py[cod]
+*$py.class
+*.so
+.Python
+*.egg-info
+.eggs
+*.egg
+dist
+build
+.venv
+venv
+ENV
+
+# IDE
+.idea
+.vscode
+*.swp
+
+# Docker
+Dockerfile*
+docker-compose*
+.docker
+
+# Misc
+*.md
+!README.md
+.coverage
+.pytest_cache
+htmlcov