Expand Pester coverage across install, tweaks, and UI workflows (#4792)

* Harden Pester CI and discard runspace return values

* Add prioritized test backlog

* Add WinUtil action logging

* Add config integrity tests

* Add XAML control wiring tests

* Add registry and service helper tests

* Add package manager tests

* Add runspace behavior tests

* Add tweak orchestration tests

* Add install workflow tests

* Add update profile tests

* Add AppX removal tests

* Log package installer output

* Add UI state helper tests

* Pin Pester test runner version

* Expand Win11 Creator tests

* Add preferences and theme tests

* Add search filter tests

* Add compile contract tests

* Use single WinUtil session log

* Remove installer output logging helper

* Handle locked WinUtil transcript log

* Avoid appending to active transcript log

* Log install uninstall package identities

functions/public/Invoke-WPFundoall.ps1

@@ -24,6 +24,7 @@ function Invoke-WPFundoall {
         param($tweaks)
 
         $sync.ProcessRunning = $true
+        Write-WinUtilLog -Component "Tweaks" -Message "Undo tweaks requested: $(@($tweaks).Count) selected tweak(s)."
         if ($tweaks.count -eq 1) {
             Invoke-WPFUIThread -ScriptBlock { Set-WinUtilTaskbaritem -state "Indeterminate" -value 0.01 -overlay "logo" }
         } else {
@@ -43,6 +44,7 @@ function Invoke-WPFundoall {
         Write-Host "=================================="
         Write-Host "---  Undo Tweaks are Finished  ---"
         Write-Host "=================================="
+        Write-WinUtilLog -Component "Tweaks" -Message "Undo tweaks workflow completed."
 
     }
 }