Let the user change the texts again after they made them read-only

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

server/scripts/install_restore_task.ps1

@@ -141,6 +141,8 @@ foreach ($copy in Get-ChildItem -LiteralPath $copies -Recurse -File -Force) {
             Copy-Item -LiteralPath $copy.FullName -Destination $target -Force
         }
         Set-ProtectedAcl $target $false ($readOnly -notcontains $copy.Name)
+        # the user may have made the file read-only for themselves, the four texts are theirs to change
+        (Get-Item -LiteralPath $target -Force).IsReadOnly = $false
         Write-Log "restored $($copy.Name)"
     } catch {
         Write-Log "failed $($copy.Name) : $_"