Hello,CatwBongos
Thank you for posting in the Microsoft community.
Understand that you want to use Bash in Powershell to open a specific folder and add it to the right-click menu bar as needed.
Your question requires different startup configurations to be configured in Windows Terminal, including specifying the startup directory and shell type, requires proficiency in understanding and running scripting languages, and includes making changes to the right-click context menu also involves personalizing the registry at the same time. Microsoft offers a Microsoft Learn (English only) community for such relatively specialized issues, where there will be specific sections for technical support for your needs, and where experts and volunteers will propose specific solutions and exchange ideas. I've directed you to the appropriate section for this question, and you can post your thread by clicking the link below.
We hope that your issue will be properly supported and resolved. Thank you for your understanding and cooperation!
Best Regards,
Rota|Microsoft Community Support Specialist