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This section details on the original issue you should resolve

<issue_title>📝 Add a README with repository documentation</issue_title>
<issue_description>## ✨ Description

The repository currently lacks a README.md file. A comprehensive README should be added to document the project's purpose, setup instructions, usage guide, and technical details.

🎯 Motivation

Without a README, new contributors and users have no way to understand what this project does, how to set it up, or how to run it. A good README is essential for any open-source repository and serves as the primary entry point for documentation.

📐 Proposed Solution

Add a README.md file at the repository root that includes the following sections:

• Project Title & Description — Explain that this is a Node.js/Express demo of the OAuth 2.0 Device Code Flow with Microsoft Azure AD
• Prerequisites — Node.js, an Azure AD tenant, and a registered application with the appropriate permissions
• Installation & Setup — Steps to clone the repo, install dependencies (npm install), and configure environment variables (TENANT_ID, CLIENT_ID)
• Usage — How to start the server (npm start) and walk through the 4-step device code flow:
  1. Get the device code
  2. Wait for user to sign in and enter the code
  3. Retrieve the access token
  4. Call the Microsoft Graph API (/me endpoint)
• Project Structure — Overview of key files and directories
• Technologies Used — Express, EJS, node-fetch, bunyan, dotenv, body-parser
• License — ISC (as defined in package.json)

🔄 Alternatives Considered

• A wiki page could serve as documentation, but a README is the standard and most discoverable format for GitHub repositories.

📎 Additional Context

The package.json description field is also empty, which could be updated alongside the README.

🔍 Relevant Code References

• server.js — Main application file containing all Express routes and OAuth 2.0 Device Code Flow logic
• package.json — Project metadata; currently has an empty description field
• .env.sample — Template for required environment variables (TENANT_ID, CLIENT_ID)
• views/index.ejs — Landing page with the 4-step stepper UI
• views/device-code.ejs — Device code display and polling logic
• views/access-token.ejs — Access token display view
• views/calling-ms-graph.ejs — Microsoft Graph API response view

📚 Useful Documentation

• OAuth 2.0 Device Authorization Grant — RFC 8628
• Microsoft Identity Platform — Device Code Flow
• Microsoft Graph API — Get User

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✍️ This issue was automatically enhanced by Copilot CLI. Original author: @0GiS0</issue_description>

Comments on the Issue (you are @copilot in this section)

@0GiS0 > 🤖 **Issue enhanced!** I've improved this issue by: > - 🌐 Translated title and body from Spanish to English > - 📝 Added a descriptive emoji title > - 📋 Structured the body with clear sections (Description, Motivation, Proposed Solution, Alternatives, Code References) > - 🔍 Added relevant code references to key files (`server.js`, `package.json`, `.env.sample`, views) > - 📚 Included links to official OAuth 2.0 and Microsoft documentation > - 🏷️ Assigned `📖 documentation` and `👋 good first issue` labels > > Feel free to edit if anything needs adjusting!