Configure shell scripts with defensive practices to ensure reliability and debuggability. Use appropriate set options for error handling and debugging, implement safe defaults that require explicit opt-in for risky operations, and preserve execution state when changing directories.

Key practices:

Example of defensive directory handling:

# Instead of:
cd "${PROJECT_PATH}"
pipenv install

# Use:
pushd "${PROJECT_PATH}"
pipenv install
popd

This approach prevents unintended side effects on subsequent script execution and makes scripts more predictable in different environments.