Description of the new feature

It'd be great if when opening a terminal from a UNC path, a free drive letter was automatically mapped and when no longer in use it was automatically unmapped.

Currently the easiest way to do this is copy+pasting the path and using pushd, thenpopd if I remember when done to unmap.

Extra credit: notification bar to show that it's been mapped.

Current behavior:

1. Have "Command Prompt" set as default profile in Windows Terminal
2. Browse to a UNC path (\\servername\sharename\) in File Explorer
3. Right click the background or a folder and select "Open in Terminal"

Output

'\\servername\sharename\path\to\directory'
CMD.EXE was started with the above path as the current directory.
UNC paths are not supported.  Defaulting to Windows directory.
Microsoft Windows [Version 10.0.26100.6899]
(c) Microsoft Corporation. All rights reserved.

C:\Windows>

Proposed technical implementation details

For finding a free drive letter and mapping see how pushd does it?

For automaticlly unmapping, Maybe Windows has a "unmap on last close" flag? Otherwise just make an attempt when the terminal closes. I guess you could show a notification bar if it fails with a retry button.