docs: improve README folder structure formatting

[anjanakri]

Related Issue

Closes #46

Changes Made

• Reformatted the folder structure section in the README using a proper code block.
• Improved readability of the repository hierarchy.
• Added concise descriptions for the main directories.
• Prevented the folder tree from rendering as a wrapped single line.

Why

The previous folder structure was difficult to read because the tree formatting was not preserved, making it hard for contributors to understand the repository layout.

This update improves navigation and onboarding while keeping the structure concise and maintainable.

Before

• Folder hierarchy was difficult to distinguish.
• Tree structure wrapped across multiple lines.
• Repository organization was not immediately clear.

After

• Clear hierarchical folder tree.
• Better readability on GitHub.
• Easier for new contributors to understand the project structure.

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Updates the repository’s folder-structure documentation to reflect current organization and provide clearer descriptions for each directory.

Changes:

• Reformatted the folder structure section into a fenced text block for readability
• Refined directory descriptions (Pre-Requisites, Level 0/1, Common) to be more specific

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.