Documenting the project

[m10090]

The project lacks a README and supporting documentation, making it difficult for newcomers to get started.

Issues:

• No introductory documentation for new contributors.
• Codebase is not self-explanatory without additional guidance.

Recommended solutions:

• Add JSDoc comments to each action function.
• Provide a Getting Started guide that includes setup instructions, learning resources, and links to key documents.
• Add a Contributing Guide that explains how to contribute, describes the project/code structure, and outlines best practices.