feat: add devcontainer setup for safe Claude Code development#1

hectcastro wants to merge 1 commit intomainhectcastro/fastapi-openapi-cli:mainfrom

claude/devcontainer-python-setup-011CUjG9G9AfrAhbhYAFYCsVhectcastro/fastapi-openapi-cli:claude/devcontainer-python-setup-011CUjG9G9AfrAhbhYAFYCsVCopy head branch name to clipboard