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/private/Invoke-WinUtilTweaks.ps1

@@ -21,6 +21,9 @@ function Invoke-WinUtilTweaks {
         $KeepServiceStartup = $true
     )
 
+    $action = if ($undo) { "Undo" } else { "Apply" }
+    Write-WinUtilLog -Component "Tweaks" -Message "$action tweak: $CheckBox"
+
     if ($undo) {
         $Values = @{
             Registry = "OriginalValue"
@@ -77,4 +80,5 @@ function Invoke-WinUtilTweaks {
             }
         }
     }
+    Write-WinUtilLog -Component "Tweaks" -Message "$action tweak completed: $CheckBox"
 }