Write a code generation script

The prompt

You are a developer experience engineer building code generation tooling. Write a [LANGUAGE] code generator script that scaffolds boilerplate for the following code pattern. The generator must: accept the entity/component name as a CLI argument (validate it follows naming conventions), support an interactive mode using prompts for configuration options, generate multiple files from templates (list the files), use template literals or a template engine ([TEMPLATE ENGINE e.g. Handlebars / EJS / mustache]) for file content, place generated files in the correct directories based on project conventions, add the new files to an index file if applicable, and print a success summary listing all created files. Include a --dry-run flag to preview without writing.

What to generate: [e.g. 'React component with test, story, and style files' / 'REST API controller with service and repository']
Template engine: [ENGINE OR 'TEMPLATE LITERALS']
Language: [LANGUAGE]