Reorganize sidebar structure to match Introduction page hierarchy

[steam-bell-92]

Description:
The Introduction page separates documentation into distinct sections like Backend Python, Backend Rust, and Frontend, but the sidebar currently groups all backend-related documentation under a single “Backend” section. The sidebar structure could be reorganized to better match the documentation hierarchy shown on the Introduction page.

Rationale:
Aligning the sidebar structure with the Introduction page improves navigation consistency, discoverability, and overall documentation organization for users and contributors.

[github-actions]

👋 Thanks for opening this issue! The maintainers will review it shortly. Till then, do not open any PR. This is a strict rule we like to follow around here :)

[rohan-pandeyy]

@steam-bell-92 Instead of restructuring the sidebar into separate “Backend Python” and “Backend Rust” sections, I think the better approach would be to align the Introduction page hierarchy with the existing sidebar structure.

Do you want to work on this issue?

[steam-bell-92]

@rohan-pandeyy sure I want to work of this issue.

For clarification I need to restructure introduction page as per sections made in sidebar already

[rohan-pandeyy]

For clarification I need to restructure introduction page as per sections made in sidebar already

Yes, exactly so the Introduction page would essentially now contain three columns of "Overview", "Backend", and "Frontend" with Backend's rows being:
Python Backend API
Python Backend Database
Python Backend Directory Structure
Python Backend Image Processing
Rust Backend API

[steam-bell-92]

Sure will do as directed