Thanks, I've done this and performed the in-place upgrade. After this, Settings works, however other built-in MS Store applications (such as Notepad and Paint and the Microsoft Store itself) still didn't, and Powershell from the right-click windows button has the same issue. I tried installing the Store with Get-AppxPackage but it failed:
Get-AppxPackage -allusers Microsoft.WindowsStore | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
Add-AppxPackage : Cannot find path 'C:\AppXManifest.xml' because it does not exist.
At line:1 char:62
+ ... | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.I ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (C:\AppXManifest.xml:String) [Add-AppxPackage], ItemNotFoundException
+ FullyQualifiedErrorId : PathNotFound,Microsoft.Windows.Appx.PackageManager.Commands.AddAppxPackageCommand
Add-AppxPackage : Deployment failed with HRESULT: 0x80073D06, The package could not be installed because a higher
version of this package is already installed.
Windows cannot install package Microsoft.WindowsStore_22401.1400.6.0_x64__8wekyb3d8bbwe because it has version
22401.1400.6.0. A higher version 22504.1401.19.0 of this package is already installed.
NOTE: For additional information, look for [ActivityId] e39abf6a-d944-0003-c73c-9ce344d9db01 in the Event Log or use
the command line Get-AppPackageLog -ActivityID e39abf6a-d944-0003-c73c-9ce344d9db01
At line:1 char:62
+ ... | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.I ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (C:\Program File...ppXManifest.xml:String) [Add-AppxPackage], Exception
+ FullyQualifiedErrorId : DeploymentError,Microsoft.Windows.Appx.PackageManager.Commands.AddAppxPackageCommand
After this I tried wsreset -i, which brought the store back. I also got Notepad, paint and the right-click windows button powershell back by uninstalling them in Add or Remove Programs, and then running wsreset again. However, Microsoft To-Do still comes up with the error "This app can't open | Check the Store for more info about Microsoft To Do." I guess this is because it isn't a built-in app? I've tried uninstalling and reinstalling it, but with no success. I'm also unable to open Minecraft Launcher, which iirc was installed through the XBOX app; it errors with "This app can't open | Minecraft Launcher can’t open because it can’t be found. The storage device might be missing or disconnected." I also can't uninstall it in add or remove programs, as it errors with:

Seems like we're most of the way there though! The only other remaining potential issue that I'm aware of is in system configuration. On the general tab, "selective startup" is selected:

On the boot tab, only Windows 11 shows, and it's default and current:

If I switch to "Normal startup" on the General tab, the boot tab now looks like this:

(Oddly, neither of these are shown as the "current OS").
Thanks for all your great work so far!