Create documentation for 8.0.x and 9.x branch setup issue

[lachlan-robinson]

Description

This PR adds a Windows-specific setup guide for the 8.x and 9.x branches. It documents the steps required to resolve environment issues when switching branches, including closing the dev container, deleting package-lock.json, removing old Docker containers and volumes, updating dependencies and scripts in package.json, and restarting the development container. The guide ensures a smooth setup process for Windows users working with these branches.

Type of change

• Documentation (update or new)

How Has This Been Tested?

• Has been tested in Chrome and Firefox to ensure Astro builds with changes.
• Has been tested in light and dark mode to confirm image visibility.

Testing Checklist

• Tested in latest Chrome
• Tested in latest Safari
• Tested in latest Firefox

Checklist

• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have requested a review from ... on the Pull Request

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[returnMarcco]

Hi @lachlan-robinson,

I'll be reviewing this PR as a senior.

All in all, the documentation accurately details the steps required to properly enable branch switching to configure the development environment for Windows based machines. I can offer the following feedback, albeit being a little nit picky:

1. The section that mentions deleting package-lock.json says to go into the doubtfire-deploy directory. Whilst this is technically correct, it may be more straightforward to mention navigating into the doubtfire-web directory to find this file.
2. Stipulating what the ng-serve poll command is for may help readers understand what it is they are fixing.
3. Stipulating the actual problem these instructions aim to solve will help readers understand why they are following these instructions.

I'll approve this PR and let you consider the feedback above.

Well done, keep it up.

[ibi420]

Hello Lachlan, your documentation clearly covers the required steps for building on both 8.x and 9.x, with appropriate visual aids. You’ve also modified the repository correctly. Thank you for the opportunity to review your work.

[SteveDala]

We do not want to encourage students in Thoth Tech to build on version 8 or version 9 as of 2026. Also, this document technically belongs in the ThothTech-Documentation-Website repository.