Refactor & Clean up Show-MainWindow

2026-06-10 02:26:29 +00:00 · 2026-06-05 21:18:14 +02:00
parent c6b849408d
commit 30ad307bf4
9 changed files with 2223 additions and 1965 deletions
--- a/Schemas/MainWindow.xaml
+++ b/Schemas/MainWindow.xaml
@@ -547,14 +547,14 @@
                                    <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Margin="0,8,0,0">
                                        <Button x:Name="HomeDefaultModeBtn" Width="227" Height="50" Style="{DynamicResource PrimaryButtonStyle}" Margin="0,0,12,0" AutomationProperties.Name="Default Mode">
                                            <StackPanel Orientation="Horizontal" VerticalAlignment="Center">
-                                                <TextBlock Text="&#xe735;" FontFamily="Segoe Fluent Icons" FontSize="16" VerticalAlignment="Center" Margin="0,0,8,0"/>
-                                                <TextBlock Text="Default Mode" ToolTip="Quickly select the recommended settings" FontWeight="SemiBold" VerticalAlignment="Center" FontSize="17" Margin="0,0,0,2"/>
+                                                <TextBlock Text="&#xe735;" FontFamily="Segoe Fluent Icons" FontSize="16" VerticalAlignment="Center" Margin="0,0,8,-1"/>
+                                                <TextBlock Text="Default Mode" ToolTip="Quickly select the recommended settings" FontWeight="SemiBold" VerticalAlignment="Center" FontSize="17" Margin="0,0,0,1"/>
                                            </StackPanel>
                                        </Button>
                                        <Button x:Name="HomeStartBtn" Width="227" Height="50" Style="{DynamicResource SecondaryButtonStyle}" AutomationProperties.Name="Custom Setup">
                                            <StackPanel Orientation="Horizontal" VerticalAlignment="Center">
-                                                <TextBlock Text="&#xe90f;" FontFamily="Segoe Fluent Icons" FontSize="14" VerticalAlignment="Center" Margin="0,0,8,0"/>
-                                                <TextBlock Text="Custom Setup" ToolTip="Manually select your preferred settings" FontWeight="SemiBold" VerticalAlignment="Center" FontSize="17" Margin="0,0,0,2"/>
+                                                <TextBlock Text="&#xe90f;" FontFamily="Segoe Fluent Icons" FontSize="14" VerticalAlignment="Center" Margin="0,0,8,-1"/>
+                                                <TextBlock Text="Custom Setup" ToolTip="Manually select your preferred settings" FontWeight="SemiBold" VerticalAlignment="Center" FontSize="17" Margin="0,0,0,1"/>
                                            </StackPanel>
                                        </Button>
                                    </StackPanel>
--- a/Scripts/Features/DisableStoreSearchSuggestions.ps1
+++ b/Scripts/Features/DisableStoreSearchSuggestions.ps1
@@ -140,9 +140,16 @@ function Test-StoreSearchSuggestionsDisabled {
    $everyoneSid = [System.Security.Principal.SecurityIdentifier]::new('S-1-1-0')

    foreach ($accessRule in @($acl.Access)) {
-        if ($accessRule.AccessControlType -eq [System.Security.AccessControl.AccessControlType]::Deny -and
-            (($accessRule.FileSystemRights -band [System.Security.AccessControl.FileSystemRights]::FullControl) -ne 0) -and
-            (try { $accessRule.IdentityReference.Translate([System.Security.Principal.SecurityIdentifier]) -eq $everyoneSid } catch { $false })) {
+        $isDenyFullControl = $accessRule.AccessControlType -eq [System.Security.AccessControl.AccessControlType]::Deny -and
+            (($accessRule.FileSystemRights -band [System.Security.AccessControl.FileSystemRights]::FullControl) -ne 0)
+        if (-not $isDenyFullControl) { continue }
+
+        $isEveryone = $false
+        try {
+            $isEveryone = $accessRule.IdentityReference.Translate([System.Security.Principal.SecurityIdentifier]) -eq $everyoneSid
+        } catch { }
+
+        if ($isEveryone) {
            return $true
        }
    }
--- a/Scripts/GUI/MainWindow-AppSelection.ps1
+++ b/Scripts/GUI/MainWindow-AppSelection.ps1
@@ -0,0 +1,536 @@
+# MainWindow-AppSelection.ps1
+# App-selection panel functions: tri-state helpers, sorting, search/highlight, app loading, preset management, and removal scope.
+
+function Add-TriStateClickBehavior {
+    param([System.Windows.Controls.CheckBox]$CheckBox)
+
+    if (-not $CheckBox -or -not $CheckBox.IsThreeState) { return }
+
+    if (-not $CheckBox.PSObject.Properties['WasIndeterminateBeforeClick']) {
+        Add-Member -InputObject $CheckBox -MemberType NoteProperty -Name 'WasIndeterminateBeforeClick' -Value $false
+    }
+
+    $CheckBox.Add_PreviewMouseLeftButtonDown({
+        $this.WasIndeterminateBeforeClick = ($this.IsChecked -eq [System.Nullable[bool]]$null)
+    })
+}
+
+function ConvertTo-NormalizedCheckboxState {
+    param([System.Windows.Controls.CheckBox]$CheckBox)
+
+    if ($CheckBox.PSObject.Properties['WasIndeterminateBeforeClick'] -and $CheckBox.WasIndeterminateBeforeClick) {
+        # WPF toggles null -> false before Click handlers fire; restore desired mixed -> checked behavior.
+        $CheckBox.WasIndeterminateBeforeClick = $false
+        $CheckBox.IsChecked = $true
+        return $true
+    }
+
+    return ($CheckBox.IsChecked -eq $true)
+}
+
+function Set-TriStatePresetCheckBoxState {
+    param(
+        [System.Windows.Controls.CheckBox]$CheckBox,
+        [int]$Total,
+        [int]$Selected
+    )
+
+    if (-not $CheckBox) { return }
+
+    if ($Total -eq 0) {
+        $CheckBox.IsEnabled = $false
+        $CheckBox.IsChecked = $false
+        return
+    }
+
+    $CheckBox.IsEnabled = $true
+    if ($Selected -eq 0) {
+        $CheckBox.IsChecked = $false
+    }
+    elseif ($Selected -eq $Total) {
+        $CheckBox.IsChecked = $true
+    }
+    else {
+        $CheckBox.IsChecked = [System.Nullable[bool]]$null
+    }
+}
+
+function Update-SortArrows {
+    param(
+        [System.Windows.Controls.TextBlock]$SortArrowName,
+        [System.Windows.Controls.TextBlock]$SortArrowDescription,
+        [System.Windows.Controls.TextBlock]$SortArrowAppId
+    )
+
+    $ease = New-Object System.Windows.Media.Animation.CubicEase
+    $ease.EasingMode = 'EaseOut'
+    $arrows = @{
+        'Name'        = $SortArrowName
+        'Description' = $SortArrowDescription
+        'AppId'       = $SortArrowAppId
+    }
+    foreach ($col in $arrows.Keys) {
+        $tb = $arrows[$col]
+        # Active column: full opacity, rotate to indicate direction (0 = up/asc, 180 = down/desc)
+        # Inactive columns: dim, reset to 0
+        if ($col -eq $script:SortColumn) {
+            $targetAngle = if ($script:SortAscending) { 0 } else { 180 }
+            $tb.Opacity = 1.0
+        }
+        else {
+            $targetAngle = 0
+            $tb.Opacity = 0.3
+        }
+        $anim = New-Object System.Windows.Media.Animation.DoubleAnimation
+        $anim.To = $targetAngle
+        $anim.Duration = [System.Windows.Duration]::new([System.TimeSpan]::FromMilliseconds(200))
+        $anim.EasingFunction = $ease
+        $tb.RenderTransform.BeginAnimation([System.Windows.Media.RotateTransform]::AngleProperty, $anim)
+    }
+}
+
+function Update-AppsPanelRebuildSearchIndex {
+    param(
+        [System.Windows.Controls.Panel]$AppsPanel,
+        $ActiveMatch = $null
+    )
+
+    $newMatches = @()
+    $newActiveIndex = -1
+    $i = 0
+    foreach ($child in $AppsPanel.Children) {
+        if ($child -is [System.Windows.Controls.CheckBox] -and $child.Background -ne [System.Windows.Media.Brushes]::Transparent) {
+            $newMatches += $child
+            if ($null -ne $ActiveMatch -and [System.Object]::ReferenceEquals($child, $ActiveMatch)) {
+                $newActiveIndex = $i
+            }
+            $i++
+        }
+    }
+    $script:AppSearchMatches = $newMatches
+    $script:AppSearchMatchIndex = if ($newActiveIndex -ge 0) { $newActiveIndex } elseif ($newMatches.Count -gt 0) { 0 } else { -1 }
+}
+
+function Update-AppsPanelSort {
+    param(
+        [System.Windows.Controls.Panel]$AppsPanel,
+        [System.Windows.Controls.TextBlock]$SortArrowName,
+        [System.Windows.Controls.TextBlock]$SortArrowDescription,
+        [System.Windows.Controls.TextBlock]$SortArrowAppId
+    )
+
+    $children = @($AppsPanel.Children)
+    $key = switch ($script:SortColumn) {
+        'Name'        { { $_.AppName } }
+        'Description' { { $_.AppDescription } }
+        'AppId'       { { $_.AppIdDisplay } }
+    }
+    $sorted = $children | Sort-Object $key -Descending:(-not $script:SortAscending)
+    $AppsPanel.Children.Clear()
+    foreach ($checkbox in $sorted) {
+        $AppsPanel.Children.Add($checkbox) | Out-Null
+    }
+    Update-SortArrows -SortArrowName $SortArrowName -SortArrowDescription $SortArrowDescription -SortArrowAppId $SortArrowAppId
+
+    # Rebuild search match list in new sorted order so keyboard navigation stays correct
+    if ($script:AppSearchMatches.Count -gt 0) {
+        $activeMatch = if ($script:AppSearchMatchIndex -ge 0 -and $script:AppSearchMatchIndex -lt $script:AppSearchMatches.Count) {
+            $script:AppSearchMatches[$script:AppSearchMatchIndex]
+        }
+        else { $null }
+        Update-AppsPanelRebuildSearchIndex -AppsPanel $AppsPanel -ActiveMatch $activeMatch
+    }
+}
+
+function Update-AppSelectionStatus {
+    param(
+        [System.Windows.Controls.Panel]$AppsPanel,
+        [System.Windows.Controls.TextBlock]$AppSelectionStatus,
+        [System.Windows.Controls.ComboBox]$AppRemovalScopeCombo,
+        [System.Windows.Controls.Border]$AppRemovalScopeSection,
+        [System.Windows.Controls.TextBlock]$AppRemovalScopeDescription,
+        [System.Windows.Controls.ComboBox]$UserSelectionCombo
+    )
+
+    $selectedCount = 0
+    foreach ($child in $AppsPanel.Children) {
+        if ($child -is [System.Windows.Controls.CheckBox] -and $child.IsChecked) {
+            $selectedCount++
+        }
+    }
+    $AppSelectionStatus.Text = "$selectedCount app(s) selected for removal"
+
+    if ($AppRemovalScopeCombo -and $AppRemovalScopeSection -and $AppRemovalScopeDescription) {
+        if ($selectedCount -gt 0) {
+            $AppRemovalScopeSection.Visibility = 'Visible'
+            if ($UserSelectionCombo.SelectedIndex -ne 2) {
+                $AppRemovalScopeCombo.IsEnabled = $true
+            }
+            Update-AppRemovalScopeDescription -AppRemovalScopeCombo $AppRemovalScopeCombo -AppRemovalScopeDescription $AppRemovalScopeDescription
+        }
+        else {
+            $AppRemovalScopeSection.Visibility = 'Collapsed'
+        }
+    }
+}
+
+function Update-AppRemovalScopeDescription {
+    param(
+        [System.Windows.Controls.ComboBox]$AppRemovalScopeCombo,
+        [System.Windows.Controls.TextBlock]$AppRemovalScopeDescription
+    )
+
+    $selectedItem = $AppRemovalScopeCombo.SelectedItem
+    if ($selectedItem) {
+        switch ($selectedItem.Content) {
+            "All users" {
+                $AppRemovalScopeDescription.Text = "Apps will be removed for all users and from the Windows image to prevent reinstallation for new users."
+            }
+            "Current user only" {
+                $AppRemovalScopeDescription.Text = "Apps will only be removed for the current user. Existing and new users will not be affected."
+            }
+            "Target user only" {
+                $AppRemovalScopeDescription.Text = "Apps will only be removed for the specified target user. Existing and new users will not be affected."
+            }
+        }
+    }
+}
+
+function Invoke-AppPreset {
+    param(
+        [System.Windows.Controls.Panel]$AppsPanel,
+        [scriptblock]$MatchFilter,
+        [bool]$Check,
+        [switch]$Exclusive
+    )
+
+    foreach ($child in $AppsPanel.Children) {
+        if ($child -is [System.Windows.Controls.CheckBox]) {
+            if ($Exclusive) {
+                $child.IsChecked = (& $MatchFilter $child)
+            }
+            elseif (& $MatchFilter $child) {
+                $child.IsChecked = $Check
+            }
+        }
+    }
+    Update-AppPresetStates -AppsPanel $AppsPanel
+}
+
+function Update-AppPresetStates {
+    param([System.Windows.Controls.Panel]$AppsPanel)
+
+    $script:UpdatingPresets = $true
+    try {
+        # Helper: count matching and checked apps, set checkbox state
+        function SetPresetState($CheckBox, [scriptblock]$MatchFilter) {
+            $total = 0; $checked = 0
+            foreach ($child in $AppsPanel.Children) {
+                if ($child -is [System.Windows.Controls.CheckBox]) {
+                    if (& $MatchFilter $child) {
+                        $total++
+                        if ($child.IsChecked) { $checked++ }
+                    }
+                }
+            }
+            Set-TriStatePresetCheckBoxState -CheckBox $CheckBox -Total $total -Selected $checked
+        }
+
+        # Find preset checkboxes via window
+        $window = $script:MainWindow
+        $presetDefaultApps = $window.FindName('PresetDefaultApps')
+        $presetLastUsed = $window.FindName('PresetLastUsed')
+
+        SetPresetState $presetDefaultApps { param($c) $c.SelectedByDefault -eq $true }
+        foreach ($jsonCb in $script:JsonPresetCheckboxes) {
+            $localIds = $jsonCb.PresetAppIds
+            SetPresetState $jsonCb { param($c) (@($c.AppIds) | Where-Object { $localIds -contains $_ }).Count -gt 0 }.GetNewClosure()
+        }
+
+        # Last used preset: only update if it's visible (has saved apps)
+        if ($presetLastUsed.Visibility -ne 'Collapsed' -and $script:SavedAppIds) {
+            SetPresetState $presetLastUsed { param($c) (@($c.AppIds) | Where-Object { $script:SavedAppIds -contains $_ }).Count -gt 0 }
+        }
+    }
+    finally {
+        $script:UpdatingPresets = $false
+    }
+}
+
+function Scroll-ToItemIfNotVisible {
+    param (
+        [System.Windows.Controls.ScrollViewer]$ScrollViewer,
+        [System.Windows.UIElement]$Item,
+        [System.Windows.UIElement]$Container
+    )
+
+    if (-not $ScrollViewer -or -not $Item -or -not $Container) { return }
+
+    try {
+        $itemPosition = $Item.TransformToAncestor($Container).Transform([System.Windows.Point]::new(0, 0)).Y
+        $viewportHeight = $ScrollViewer.ViewportHeight
+        $itemHeight = $Item.ActualHeight
+        $currentOffset = $ScrollViewer.VerticalOffset
+
+        # Check if the item is currently visible in the viewport
+        $itemTop = $itemPosition - $currentOffset
+        $itemBottom = $itemTop + $itemHeight
+
+        $isVisible = ($itemTop -ge 0) -and ($itemBottom -le $viewportHeight)
+
+        # Only scroll if the item is not visible
+        if (-not $isVisible) {
+            # Center the item in the viewport
+            $targetOffset = $itemPosition - ($viewportHeight / 2) + ($itemHeight / 2)
+            $ScrollViewer.ScrollToVerticalOffset([Math]::Max(0, $targetOffset))
+        }
+    }
+    catch {
+        # Fallback to simple bring into view
+        $Item.BringIntoView()
+    }
+}
+
+function Find-ParentScrollViewer {
+    param ([System.Windows.UIElement]$Element)
+
+    $parent = [System.Windows.Media.VisualTreeHelper]::GetParent($Element)
+    while ($null -ne $parent) {
+        if ($parent -is [System.Windows.Controls.ScrollViewer]) {
+            return $parent
+        }
+        $parent = [System.Windows.Media.VisualTreeHelper]::GetParent($parent)
+    }
+    return $null
+}
+
+function Load-AppsWithList {
+    param(
+        [System.Windows.Window]$Window,
+        [System.Windows.Controls.Panel]$AppsPanel,
+        [System.Windows.Controls.CheckBox]$OnlyInstalledAppsBox,
+        [System.Windows.Controls.Border]$LoadingAppsIndicator,
+        [System.Windows.Controls.MenuItem]$ImportConfigBtn,
+        [string]$ListOfApps
+    )
+
+    $script:MainWindowLastSelectedCheckbox = $null
+
+    $loaderScriptPath = $script:LoadAppsDetailsScriptPath
+    $appsFilePath = $script:AppsListFilePath
+    $onlyInstalled = [bool]$OnlyInstalledAppsBox.IsChecked
+
+    # Use preloaded data if available; otherwise load in background job
+    if (-not $onlyInstalled -and $script:PreloadedAppData) {
+        $rawAppData = $script:PreloadedAppData
+        $script:PreloadedAppData = $null
+    }
+    else {
+        # Load apps details in a background job to keep the UI responsive
+        $rawAppData = Invoke-NonBlocking -ScriptBlock {
+            param($loaderScript, $appsListFilePath, $installedList, $onlyInstalled)
+            $script:AppsListFilePath = $appsListFilePath
+            . $loaderScript
+            LoadAppsDetailsFromJson -OnlyInstalled:$onlyInstalled -InstalledList $installedList -InitialCheckedFromJson:$false
+        } -ArgumentList $loaderScriptPath, $appsFilePath, $ListOfApps, $onlyInstalled
+    }
+
+    $appsToAdd = @($rawAppData | Where-Object { $_ -and ($_.AppId -or $_.FriendlyName) } | Sort-Object -Property FriendlyName)
+
+    $LoadingAppsIndicator.Visibility = 'Collapsed'
+
+    if ($appsToAdd.Count -eq 0) {
+        $Window.FindName('DeploymentApplyBtn').IsEnabled = $true
+        if ($ImportConfigBtn) {
+            $ImportConfigBtn.IsEnabled = $true
+        }
+        return
+    }
+
+    $brushSafe = [System.Windows.Media.BrushConverter]::new().ConvertFromString('#4CAF50')
+    $brushUnsafe = [System.Windows.Media.BrushConverter]::new().ConvertFromString('#F44336')
+    $brushDefault = [System.Windows.Media.BrushConverter]::new().ConvertFromString('#FFC107')
+    $brushSafe.Freeze(); $brushUnsafe.Freeze(); $brushDefault.Freeze()
+
+    # Create WPF controls; pump the Dispatcher every batch so the spinner keeps animating.
+    $batchSize = 20
+    for ($i = 0; $i -lt $appsToAdd.Count; $i++) {
+        $app = $appsToAdd[$i]
+
+        $checkbox = New-Object System.Windows.Controls.CheckBox
+        $automationName = if ($app.FriendlyName) { $app.FriendlyName } elseif ($app.AppIdDisplay) { $app.AppIdDisplay } else { $null }
+        if ($automationName) { $checkbox.SetValue([System.Windows.Automation.AutomationProperties]::NameProperty, $automationName) }
+        $checkbox.Tag = $app.AppIdDisplay
+        $checkbox.IsChecked = $app.IsChecked
+        $checkbox.Style = $Window.Resources['AppsPanelCheckBoxStyle']
+
+        # Build table row: Recommendation dot | Name | Description | App ID
+        $row = New-Object System.Windows.Controls.Grid
+        $row.Style = $Window.Resources['AppTableRowStyle']
+        $c0 = New-Object System.Windows.Controls.ColumnDefinition; $c0.Width = $Window.Resources['AppTableDotColWidth']
+        $c1 = New-Object System.Windows.Controls.ColumnDefinition; $c1.Width = $Window.Resources['AppTableNameColWidth']
+        $c2 = New-Object System.Windows.Controls.ColumnDefinition; $c2.Width = $Window.Resources['AppTableDescColWidth']
+        $c3 = New-Object System.Windows.Controls.ColumnDefinition; $c3.Width = $Window.Resources['AppTableIdColWidth']
+        $row.ColumnDefinitions.Add($c0); $row.ColumnDefinitions.Add($c1)
+        $row.ColumnDefinitions.Add($c2); $row.ColumnDefinitions.Add($c3)
+
+        $dot = New-Object System.Windows.Shapes.Ellipse
+        $dot.Style = $Window.Resources['AppRecommendationDotStyle']
+        $dot.Fill = switch ($app.Recommendation) { 'safe' { $brushSafe } 'unsafe' { $brushUnsafe } default { $brushDefault } }
+        $dot.ToolTip = switch ($app.Recommendation) {
+            'safe'   { '[Recommended] Safe to remove for most users' }
+            'unsafe' { '[Not Recommended] Only remove if you know what you are doing' }
+            default  { "[Optional] Remove if you don't need this app" }
+        }
+        [System.Windows.Controls.Grid]::SetColumn($dot, 0)
+
+        $tbName = New-Object System.Windows.Controls.TextBlock
+        $tbName.Text = $app.FriendlyName
+        $tbName.Style = $Window.Resources['AppNameTextStyle']
+        [System.Windows.Controls.Grid]::SetColumn($tbName, 1)
+
+        $tbDesc = New-Object System.Windows.Controls.TextBlock
+        $tbDesc.Text = $app.Description
+        $tbDesc.Style = $Window.Resources['AppDescTextStyle']
+        $tbDesc.ToolTip = $app.Description
+        [System.Windows.Controls.Grid]::SetColumn($tbDesc, 2)
+
+        $tbId = New-Object System.Windows.Controls.TextBlock
+        $tbId.Text = $app.AppIdDisplay
+        $tbId.Style = $Window.Resources["AppIdTextStyle"]
+        $tbId.ToolTip = $app.AppIdDisplay
+        [System.Windows.Controls.Grid]::SetColumn($tbId, 3)
+
+        $row.Children.Add($dot) | Out-Null
+        $row.Children.Add($tbName) | Out-Null
+        $row.Children.Add($tbDesc) | Out-Null
+        $row.Children.Add($tbId) | Out-Null
+        $checkbox.Content = $row
+
+        Add-Member -InputObject $checkbox -MemberType NoteProperty -Name 'AppName' -Value $app.FriendlyName
+        Add-Member -InputObject $checkbox -MemberType NoteProperty -Name 'AppDescription' -Value $app.Description
+        Add-Member -InputObject $checkbox -MemberType NoteProperty -Name 'SelectedByDefault' -Value $app.SelectedByDefault
+        Add-Member -InputObject $checkbox -MemberType NoteProperty -Name 'AppIds' -Value @($app.AppId)
+        Add-Member -InputObject $checkbox -MemberType NoteProperty -Name 'AppIdDisplay' -Value $app.AppIdDisplay
+
+        $checkbox.Add_Checked({
+            $w = $script:MainWindow
+            Update-AppSelectionStatus -AppsPanel $w.FindName('AppSelectionPanel') `
+                -AppSelectionStatus $w.FindName('AppSelectionStatus') `
+                -AppRemovalScopeCombo $w.FindName('AppRemovalScopeCombo') `
+                -AppRemovalScopeSection $w.FindName('AppRemovalScopeSection') `
+                -AppRemovalScopeDescription $w.FindName('AppRemovalScopeDescription') `
+                -UserSelectionCombo $w.FindName('UserSelectionCombo')
+        })
+        $checkbox.Add_Unchecked({
+            $w = $script:MainWindow
+            Update-AppSelectionStatus -AppsPanel $w.FindName('AppSelectionPanel') `
+                -AppSelectionStatus $w.FindName('AppSelectionStatus') `
+                -AppRemovalScopeCombo $w.FindName('AppRemovalScopeCombo') `
+                -AppRemovalScopeSection $w.FindName('AppRemovalScopeSection') `
+                -AppRemovalScopeDescription $w.FindName('AppRemovalScopeDescription') `
+                -UserSelectionCombo $w.FindName('UserSelectionCombo')
+        })
+        AttachShiftClickBehavior -checkbox $checkbox -appsPanel $AppsPanel `
+            -lastSelectedCheckboxRef ([ref]$script:MainWindowLastSelectedCheckbox) `
+            -updateStatusCallback {
+                $w = $script:MainWindow
+                Update-AppSelectionStatus -AppsPanel $w.FindName('AppSelectionPanel') `
+                    -AppSelectionStatus $w.FindName('AppSelectionStatus') `
+                    -AppRemovalScopeCombo $w.FindName('AppRemovalScopeCombo') `
+                    -AppRemovalScopeSection $w.FindName('AppRemovalScopeSection') `
+                    -AppRemovalScopeDescription $w.FindName('AppRemovalScopeDescription') `
+                    -UserSelectionCombo $w.FindName('UserSelectionCombo')
+            }
+
+        $AppsPanel.Children.Add($checkbox) | Out-Null
+
+        if (($i + 1) % $batchSize -eq 0) { DoEvents }
+    }
+
+    $sortArrowName = $Window.FindName('SortArrowName')
+    $sortArrowDescription = $Window.FindName('SortArrowDescription')
+    $sortArrowAppId = $Window.FindName('SortArrowAppId')
+    Update-AppsPanelSort -AppsPanel $AppsPanel -SortArrowName $sortArrowName -SortArrowDescription $sortArrowDescription -SortArrowAppId $sortArrowAppId
+
+    # If Default Mode was clicked while apps were still loading, apply defaults now
+    if ($script:PendingDefaultMode) {
+        $script:PendingDefaultMode = $false
+        Invoke-AppPreset -AppsPanel $AppsPanel -MatchFilter { param($c) $c.SelectedByDefault -eq $true } -Exclusive
+    }
+
+    $appSelectionStatusText = $Window.FindName('AppSelectionStatus')
+    $appRemovalScopeCombo = $Window.FindName('AppRemovalScopeCombo')
+    $appRemovalScopeSection = $Window.FindName('AppRemovalScopeSection')
+    $appRemovalScopeDescription = $Window.FindName('AppRemovalScopeDescription')
+    $userSelectionCombo = $Window.FindName('UserSelectionCombo')
+    Update-AppSelectionStatus -AppsPanel $AppsPanel -AppSelectionStatus $appSelectionStatusText `
+        -AppRemovalScopeCombo $appRemovalScopeCombo -AppRemovalScopeSection $appRemovalScopeSection `
+        -AppRemovalScopeDescription $appRemovalScopeDescription -UserSelectionCombo $userSelectionCombo
+
+    # Re-enable Apply button now that the full, correctly-checked app list is ready
+    $Window.FindName('DeploymentApplyBtn').IsEnabled = $true
+    if ($ImportConfigBtn) {
+        $ImportConfigBtn.IsEnabled = $true
+    }
+}
+
+function Load-AppsIntoMainUI {
+    param(
+        [System.Windows.Window]$Window,
+        [System.Windows.Controls.Panel]$AppsPanel,
+        [System.Windows.Controls.CheckBox]$OnlyInstalledAppsBox,
+        [System.Windows.Controls.Border]$LoadingAppsIndicator,
+        [System.Windows.Controls.MenuItem]$ImportConfigBtn
+    )
+
+    # Prevent concurrent loads
+    if ($script:IsLoadingApps) { return }
+    $script:IsLoadingApps = $true
+
+    if ($ImportConfigBtn) {
+        $ImportConfigBtn.IsEnabled = $false
+    }
+
+    # Show loading indicator and clear existing apps
+    $LoadingAppsIndicator.Visibility = 'Visible'
+    $AppsPanel.Children.Clear()
+
+    # Disable Apply button while apps are loading so it can't be clicked with a partial list
+    $Window.FindName('DeploymentApplyBtn').IsEnabled = $false
+
+    # Update navigation buttons to disable Next/Previous
+    Update-NavigationButtons -Window $Window -TabControl $Window.FindName('MainTabControl')
+
+    # Force a render so the loading indicator is visible, then schedule the
+    # actual loading at Background priority so this call returns immediately.
+    # This is critical when called from Add_Loaded: the window must finish
+    # its initialization before we start a nested message pump via DoEvents.
+    $Window.Dispatcher.Invoke([System.Windows.Threading.DispatcherPriority]::Render, [action] {})
+    $Window.Dispatcher.BeginInvoke([System.Windows.Threading.DispatcherPriority]::Background, [action] {
+            try {
+                $listOfApps = ""
+
+                if ($OnlyInstalledAppsBox.IsChecked -and ($script:WingetInstalled -eq $true)) {
+                    $listOfApps = GetInstalledAppsViaWinget -TimeOut 10 -NonBlocking
+
+                    if ($null -eq $listOfApps) {
+                        Show-MessageBox -Message 'Unable to load list of installed apps via WinGet.' -Title 'Error' -Button 'OK' -Icon 'Error' | Out-Null
+                        $OnlyInstalledAppsBox.IsChecked = $false
+                    }
+                }
+
+                Load-AppsWithList -Window $Window -AppsPanel $AppsPanel -OnlyInstalledAppsBox $OnlyInstalledAppsBox `
+                    -LoadingAppsIndicator $LoadingAppsIndicator -ImportConfigBtn $ImportConfigBtn -ListOfApps $listOfApps
+            }
+            catch {
+                Write-Warning "Failed to load apps list: $($_.Exception.Message)"
+                $LoadingAppsIndicator.Visibility = 'Collapsed'
+                $Window.FindName('DeploymentApplyBtn').IsEnabled = $true
+                if ($ImportConfigBtn) { $ImportConfigBtn.IsEnabled = $true }
+            }
+            finally {
+                $script:IsLoadingApps = $false
+            }
+        }) | Out-Null
+}
--- a/Scripts/GUI/MainWindow-Deployment.ps1
+++ b/Scripts/GUI/MainWindow-Deployment.ps1
@@ -0,0 +1,487 @@
+# MainWindow-Deployment.ps1
+# Overview generation, pending tweak actions, feature labels, tweak preset maps, apply logic, user mode state, user selection, and validation.
+
+function Get-FeatureLabel {
+    param(
+        [string]$FeatureId,
+        $FallbackLabel = $null
+    )
+
+    $label = $script:FeatureLabelLookup[$FeatureId]
+    if (-not [string]::IsNullOrWhiteSpace([string]$label)) {
+        return [string]$label
+    }
+
+    if (-not [string]::IsNullOrWhiteSpace([string]$FallbackLabel)) {
+        return [string]$FallbackLabel
+    }
+
+    return [string]$FeatureId
+}
+
+function Get-UndoFeatureLabel {
+    param(
+        [string]$FeatureId,
+        $FallbackLabel = $null
+    )
+
+    $undoLabel = $script:UndoFeatureLabelLookup[$FeatureId]
+    if (-not [string]::IsNullOrWhiteSpace([string]$undoLabel)) {
+        return [string]$undoLabel
+    }
+
+    # Fall back to the regular label (prefixed for undo context)
+    $label = Get-FeatureLabel -FeatureId $FeatureId -FallbackLabel $FallbackLabel
+    return [string]$label
+}
+
+function Get-PendingTweakActions {
+    param(
+        [System.Windows.Window]$Window,
+        [bool]$ShowAppliedTweaksMode
+    )
+
+    $actions = New-Object System.Collections.Generic.List[object]
+
+    if (-not $script:UiControlMappings) {
+        return @($actions.ToArray())
+    }
+
+    foreach ($mappingKey in $script:UiControlMappings.Keys) {
+        $control = $Window.FindName($mappingKey)
+        if (-not $control) { continue }
+        $mapping = $script:UiControlMappings[$mappingKey]
+
+        if ($control -is [System.Windows.Controls.CheckBox] -and $mapping.Type -eq 'feature') {
+            $wasApplied = $false
+            if ($ShowAppliedTweaksMode -and $null -ne $control.PSObject.Properties['SystemState']) {
+                $wasApplied = [bool]$control.SystemState
+            }
+            elseif ($null -ne $control.PSObject.Properties['InitialState']) {
+                $wasApplied = [bool]$control.InitialState
+            }
+            elseif ($null -ne $control.PSObject.Properties['SystemState']) {
+                $wasApplied = [bool]$control.SystemState
+            }
+            $isNowChecked = $control.IsChecked -eq $true
+
+            if (-not $wasApplied -and $isNowChecked) {
+                $actions.Add([PSCustomObject]@{
+                        Action    = 'Apply'
+                        FeatureId = [string]$mapping.FeatureId
+                        Label     = (Get-FeatureLabel -FeatureId $mapping.FeatureId -FallbackLabel $mapping.Label)
+                    })
+            }
+            elseif ($wasApplied -and -not $isNowChecked) {
+                $actions.Add([PSCustomObject]@{
+                        Action    = 'Undo'
+                        FeatureId = [string]$mapping.FeatureId
+                        Label     = (Get-FeatureLabel -FeatureId $mapping.FeatureId -FallbackLabel $mapping.Label)
+                    })
+            }
+        }
+        elseif ($control -is [System.Windows.Controls.ComboBox] -and $mapping.Type -eq 'group') {
+            $wasIndex = 0
+            if ($ShowAppliedTweaksMode -and $null -ne $control.PSObject.Properties['SystemIndex']) {
+                $wasIndex = [int]$control.SystemIndex
+            }
+            elseif ($null -ne $control.PSObject.Properties['InitialIndex']) {
+                $wasIndex = [int]$control.InitialIndex
+            }
+            elseif ($null -ne $control.PSObject.Properties['SystemIndex']) {
+                $wasIndex = [int]$control.SystemIndex
+            }
+            $isNowIndex = $control.SelectedIndex
+
+            if ($wasIndex -eq $isNowIndex) { continue }
+
+            if ($isNowIndex -gt 0 -and $isNowIndex -le $mapping.Values.Count) {
+                $selectedValue = $mapping.Values[$isNowIndex - 1]
+                foreach ($fid in $selectedValue.FeatureIds) {
+                    $actions.Add([PSCustomObject]@{
+                            Action    = 'Apply'
+                            FeatureId = [string]$fid
+                            Label     = (Get-FeatureLabel -FeatureId $fid)
+                        })
+                }
+            }
+        }
+    }
+
+    return @($actions.ToArray())
+}
+
+function New-Overview {
+    param(
+        [System.Windows.Window]$Window,
+        [System.Windows.Controls.StackPanel]$AppsPanel,
+        $ShowCurrentlyAppliedTweaksCheckBox
+    )
+
+    $changesList = @()
+    $showAppliedTweaksMode = ($ShowCurrentlyAppliedTweaksCheckBox -and $ShowCurrentlyAppliedTweaksCheckBox.IsChecked -eq $true)
+
+    # Collect selected apps
+    $selectedAppsCount = 0
+    foreach ($child in $AppsPanel.Children) {
+        if ($child -is [System.Windows.Controls.CheckBox] -and $child.IsChecked) {
+            $selectedAppsCount++
+        }
+    }
+    if ($selectedAppsCount -gt 0) {
+        $changesList += "Remove $selectedAppsCount application(s)"
+    }
+
+    foreach ($tweakAction in @(Get-PendingTweakActions -Window $Window -ShowAppliedTweaksMode:$showAppliedTweaksMode)) {
+        if ($tweakAction.Action -eq 'Undo') {
+            $changesList += "Undo: $($tweakAction.Label)"
+        }
+        else {
+            $changesList += $tweakAction.Label
+        }
+    }
+
+    return $changesList
+}
+
+function Invoke-ShowChangesOverview {
+    param(
+        [System.Windows.Window]$Window,
+        [System.Windows.Controls.StackPanel]$AppsPanel,
+        $ShowCurrentlyAppliedTweaksCheckBox
+    )
+
+    $changesList = New-Overview -Window $Window -AppsPanel $AppsPanel -ShowCurrentlyAppliedTweaksCheckBox $ShowCurrentlyAppliedTweaksCheckBox
+
+    if ($changesList.Count -eq 0) {
+        Show-MessageBox -Message 'No changes have been selected.' -Title 'Selected Changes' -Button 'OK' -Icon 'Information'
+        return
+    }
+
+    $message = ($changesList | ForEach-Object { "$([char]0x2022) $_" }) -join "`n"
+    Show-MessageBox -Message $message -Title 'Selected Changes' -Button 'OK' -Icon 'None' -Width 600
+}
+
+function Build-TweakPresetControlMap {
+    param(
+        [System.Windows.Window]$Window,
+        $SettingsJson
+    )
+
+    $presetMap = @{}
+    if (-not $SettingsJson -or -not $SettingsJson.Settings -or -not $script:UiControlMappings) {
+        return $presetMap
+    }
+
+    # FeatureId -> control metadata, similar to ApplySettingsToUiControls lookup.
+    $featureIdIndex = @{}
+    foreach ($controlName in $script:UiControlMappings.Keys) {
+        $control = $Window.FindName($controlName)
+        if (-not $control -or $control.Visibility -ne 'Visible') { continue }
+
+        $mapping = $script:UiControlMappings[$controlName]
+        if ($mapping.Type -eq 'group') {
+            $i = 1
+            foreach ($val in $mapping.Values) {
+                foreach ($fid in $val.FeatureIds) {
+                    $featureIdIndex[$fid] = @{ ControlName = $controlName; Control = $control; MappingType = 'group'; Index = $i }
+                }
+                $i++
+            }
+        }
+        elseif ($mapping.Type -eq 'feature') {
+            $featureIdIndex[$mapping.FeatureId] = @{ ControlName = $controlName; Control = $control; MappingType = 'feature' }
+        }
+    }
+
+    foreach ($setting in $SettingsJson.Settings) {
+        if ($setting.Value -ne $true) { continue }
+        if ($setting.Name -eq 'CreateRestorePoint') { continue }
+
+        $entry = $featureIdIndex[$setting.Name]
+        if (-not $entry) { continue }
+        if ($presetMap.ContainsKey($entry.ControlName)) { continue }
+
+        $controlType = if ($entry.Control -is [System.Windows.Controls.CheckBox]) { 'CheckBox' } else { 'ComboBox' }
+        $desiredValue = switch ($entry.MappingType) {
+            'group' { $entry.Index }
+            default { if ($controlType -eq 'CheckBox') { $true } else { 1 } }
+        }
+
+        $presetMap[$entry.ControlName] = @{ Control = $entry.Control; ControlType = $controlType; DesiredValue = $desiredValue }
+    }
+
+    return $presetMap
+}
+
+function Build-CategoryTweakPresetMap {
+    param(
+        [System.Windows.Window]$Window,
+        [string]$Category
+    )
+
+    $presetMap = @{}
+    if (-not $script:UiControlMappings) { return $presetMap }
+
+    foreach ($controlName in $script:UiControlMappings.Keys) {
+        $mapping = $script:UiControlMappings[$controlName]
+        if ($mapping.Category -ne $Category) { continue }
+
+        $control = $Window.FindName($controlName)
+        if (-not $control -or $control.Visibility -ne 'Visible') { continue }
+
+        $controlType = if ($control -is [System.Windows.Controls.CheckBox]) { 'CheckBox' } else { 'ComboBox' }
+        $desiredValue = if ($controlType -eq 'CheckBox') { $true } else { 1 }
+        $presetMap[$controlName] = @{ Control = $control; ControlType = $controlType; DesiredValue = $desiredValue }
+    }
+
+    return $presetMap
+}
+
+function Get-SavedAppIdsFromSettingsJson {
+    param($SettingsJson)
+
+    if (-not $SettingsJson -or -not $SettingsJson.Settings) {
+        return $null
+    }
+
+    $appsValue = $null
+    foreach ($setting in $SettingsJson.Settings) {
+        if ($setting.Name -eq 'Apps' -and $setting.Value) {
+            $appsValue = $setting.Value
+            break
+        }
+    }
+
+    if (-not $appsValue) {
+        return $null
+    }
+
+    $savedAppIds = @()
+    if ($appsValue -is [string]) {
+        $savedAppIds = $appsValue.Split(',')
+    }
+    elseif ($appsValue -is [array]) {
+        $savedAppIds = $appsValue
+    }
+
+    $savedAppIds = $savedAppIds | ForEach-Object { $_.Trim() } | Where-Object { $_ -ne '' }
+    if ($savedAppIds.Count -eq 0) {
+        return $null
+    }
+
+    return $savedAppIds
+}
+
+function Invoke-ApplyTweakPresetMap {
+    param(
+        [hashtable]$PresetMap,
+        [bool]$Check
+    )
+
+    if (-not $PresetMap) {
+        $PresetMap = @{}
+    }
+
+    $wasUpdatingTweakPresets = [bool]$script:UpdatingTweakPresets
+    $script:UpdatingTweakPresets = $true
+    try {
+        foreach ($target in $PresetMap.Values) {
+            $control = $target.Control
+            if (-not $control) { continue }
+
+            if ($target.ControlType -eq 'CheckBox') {
+                $control.IsChecked = $Check
+            }
+            elseif ($target.ControlType -eq 'ComboBox') {
+                $desiredIndex = [int]$target.DesiredValue
+                if ($Check) {
+                    $control.SelectedIndex = $desiredIndex
+                }
+                elseif ($control.SelectedIndex -eq $desiredIndex) {
+                    $control.SelectedIndex = 0
+                }
+            }
+        }
+    }
+    finally {
+        $script:UpdatingTweakPresets = $wasUpdatingTweakPresets
+    }
+
+    if (-not $wasUpdatingTweakPresets) {
+        Update-TweakPresetStates -Window $script:MainWindow
+    }
+}
+
+function Set-TweakPresetCheckBoxState {
+    param(
+        [System.Windows.Controls.CheckBox]$PresetCheckBox,
+        [hashtable]$PresetMap
+    )
+
+    if (-not $PresetCheckBox) { return }
+    if (-not $PresetMap) {
+        $PresetMap = @{}
+    }
+
+    $total = $PresetMap.Count
+    $selected = 0
+
+    foreach ($target in $PresetMap.Values) {
+        $control = $target.Control
+        if (-not $control) { continue }
+
+        if ($target.ControlType -eq 'CheckBox' -and $control.IsChecked -eq $true) {
+            $selected++
+        }
+        elseif ($target.ControlType -eq 'ComboBox' -and $control.SelectedIndex -eq [int]$target.DesiredValue) {
+            $selected++
+        }
+    }
+
+    Set-TriStatePresetCheckBoxState -CheckBox $PresetCheckBox -Total $total -Selected $selected
+}
+
+function Update-TweakPresetStates {
+    param([System.Windows.Window]$Window)
+
+    $script:UpdatingTweakPresets = $true
+    try {
+        $presetDefaultTweaksBtn = $Window.FindName('PresetDefaultTweaksBtn')
+        $presetLastUsedTweaksBtn = $Window.FindName('PresetLastUsedTweaksBtn')
+        $presetPrivacyTweaksBtn = $Window.FindName('PresetPrivacyTweaksBtn')
+        $presetAITweaksBtn = $Window.FindName('PresetAITweaksBtn')
+
+        Set-TweakPresetCheckBoxState -PresetCheckBox $presetDefaultTweaksBtn -PresetMap $script:DefaultTweakPresetMap
+        if ($presetLastUsedTweaksBtn -and $presetLastUsedTweaksBtn.Visibility -ne 'Collapsed') {
+            Set-TweakPresetCheckBoxState -PresetCheckBox $presetLastUsedTweaksBtn -PresetMap $script:LastUsedTweakPresetMap
+        }
+        Set-TweakPresetCheckBoxState -PresetCheckBox $presetPrivacyTweaksBtn -PresetMap $script:PrivacyTweakPresetMap
+        Set-TweakPresetCheckBoxState -PresetCheckBox $presetAITweaksBtn -PresetMap $script:AITweakPresetMap
+    }
+    finally {
+        $script:UpdatingTweakPresets = $false
+    }
+}
+
+function Register-TweakPresetControlStateHandlers {
+    param([System.Windows.Window]$Window)
+
+    if (-not $script:UiControlMappings) { return }
+
+    foreach ($controlName in $script:UiControlMappings.Keys) {
+        $control = $Window.FindName($controlName)
+        if (-not $control) { continue }
+
+        if ($control -is [System.Windows.Controls.CheckBox]) {
+            $control.Add_Checked({ if (-not $script:UpdatingTweakPresets) { Update-TweakPresetStates -Window $script:MainWindow } })
+            $control.Add_Unchecked({ if (-not $script:UpdatingTweakPresets) { Update-TweakPresetStates -Window $script:MainWindow } })
+        }
+        elseif ($control -is [System.Windows.Controls.ComboBox]) {
+            $control.Add_SelectionChanged({ if (-not $script:UpdatingTweakPresets) { Update-TweakPresetStates -Window $script:MainWindow } })
+        }
+    }
+}
+
+function Initialize-TweakPresetSources {
+    param(
+        [System.Windows.Window]$Window,
+        $DefaultSettingsJson,
+        $LastUsedSettingsJson
+    )
+
+    $script:DefaultTweakPresetMap = Build-TweakPresetControlMap -Window $Window -SettingsJson $DefaultSettingsJson
+    $script:LastUsedTweakPresetMap = Build-TweakPresetControlMap -Window $Window -SettingsJson $LastUsedSettingsJson
+    $script:PrivacyTweakPresetMap = Build-CategoryTweakPresetMap -Window $Window -Category 'Privacy & Suggested Content'
+    $script:AITweakPresetMap = Build-CategoryTweakPresetMap -Window $Window -Category 'AI'
+
+    $presetLastUsedTweaksBtn = $Window.FindName('PresetLastUsedTweaksBtn')
+    if ($presetLastUsedTweaksBtn) {
+        $presetLastUsedTweaksBtn.Visibility = if ($script:LastUsedTweakPresetMap.Count -gt 0) { 'Visible' } else { 'Collapsed' }
+    }
+}
+
+function Update-AppliedTweaksUserModeState {
+    param(
+        [System.Windows.Controls.CheckBox]$ShowCurrentlyAppliedTweaksCheckBox,
+        [System.Windows.Controls.ComboBox]$UserSelectionCombo
+    )
+
+    # Show/hide detect applied tweaks checkbox based on user mode
+    if ($ShowCurrentlyAppliedTweaksCheckBox) {
+        if ($UserSelectionCombo.SelectedIndex -eq 0) {
+            $ShowCurrentlyAppliedTweaksCheckBox.Visibility = 'Visible'
+        }
+        else {
+            $ShowCurrentlyAppliedTweaksCheckBox.Visibility = 'Collapsed'
+        }
+    }
+
+    # Enable/disable user mode combo based on params only (not checkbox)
+    if ($script:Params.ContainsKey('Sysprep') -or $script:Params.ContainsKey('User')) {
+        $UserSelectionCombo.IsEnabled = $false
+    }
+    else {
+        $UserSelectionCombo.IsEnabled = $true
+    }
+}
+
+function Update-UserSelectionDescription {
+    param(
+        [System.Windows.Window]$Window,
+        [System.Windows.Controls.ComboBox]$UserSelectionCombo,
+        [System.Windows.Controls.TextBox]$OtherUsernameTextBox,
+        [System.Windows.Controls.TextBlock]$UserSelectionDescription
+    )
+
+    switch ($UserSelectionCombo.SelectedIndex) {
+        0 {
+            $currentUserName = GetUserName
+            if ([string]::IsNullOrWhiteSpace($currentUserName)) {
+                $UserSelectionDescription.Text = "The currently logged-in user profile"
+            }
+            else {
+                $UserSelectionDescription.Text = "The currently logged-in user profile: $currentUserName"
+            }
+        }
+        1 {
+            $targetUserName = $OtherUsernameTextBox.Text.Trim()
+            if ([string]::IsNullOrWhiteSpace($targetUserName)) {
+                $UserSelectionDescription.Text = "A different user profile on this system"
+            }
+            else {
+                $UserSelectionDescription.Text = "A different user profile on this system: $targetUserName"
+            }
+        }
+        default {
+            $UserSelectionDescription.Text = "The default user template, affecting all new users created after this point. Useful for Sysprep deployment."
+        }
+    }
+}
+
+function Test-OtherUsername {
+    param(
+        [System.Windows.Window]$Window,
+        [System.Windows.Controls.ComboBox]$UserSelectionCombo,
+        [System.Windows.Controls.TextBox]$OtherUsernameTextBox,
+        [System.Windows.Controls.TextBlock]$UsernameValidationMessage
+    )
+
+    # Only validate if "Other User" is selected
+    if ($UserSelectionCombo.SelectedIndex -ne 1) {
+        return $true
+    }
+
+    $errorBrush = $Window.Resources['ValidationErrorColor']
+    $successBrush = $Window.Resources['ValidationSuccessColor']
+    $validationResult = Test-TargetUserName -UserName $OtherUsernameTextBox.Text
+
+    $UsernameValidationMessage.Text = $validationResult.Message
+    if ($validationResult.IsValid) {
+        $UsernameValidationMessage.Foreground = $successBrush
+        return $true
+    }
+
+    $UsernameValidationMessage.Foreground = $errorBrush
+    return $false
+}
--- a/Scripts/GUI/MainWindow-Navigation.ps1
+++ b/Scripts/GUI/MainWindow-Navigation.ps1
@@ -0,0 +1,72 @@
+# MainWindow-Navigation.ps1
+# Wizard navigation helpers: tab navigation buttons and progress indicators.
+
+function Update-NavigationButtons {
+    param(
+        [System.Windows.Window]$Window,
+        [System.Windows.Controls.TabControl]$TabControl
+    )
+
+    $currentIndex = $TabControl.SelectedIndex
+    $totalTabs = $TabControl.Items.Count
+
+    $previousBtn = $Window.FindName('PreviousBtn')
+    $nextBtn = $Window.FindName('NextBtn')
+
+    $homeIndex = 0
+    $overviewIndex = $totalTabs - 1
+
+    # Navigation button visibility
+    if ($currentIndex -eq $homeIndex) {
+        $nextBtn.Visibility = 'Collapsed'
+        $previousBtn.Visibility = 'Collapsed'
+    }
+    elseif ($currentIndex -eq $overviewIndex) {
+        $nextBtn.Visibility = 'Collapsed'
+        $previousBtn.Visibility = 'Visible'
+    }
+    else {
+        $nextBtn.Visibility = 'Visible'
+        $previousBtn.Visibility = 'Visible'
+    }
+
+    # Update progress indicators
+    # Tab indices: 0=Home, 1=App Removal, 2=Tweaks, 3=Deployment Settings
+    $progressIndicator1 = $Window.FindName('ProgressIndicator1') # App Removal
+    $progressIndicator2 = $Window.FindName('ProgressIndicator2') # Tweaks
+    $progressIndicator3 = $Window.FindName('ProgressIndicator3') # Deployment Settings
+    $bottomNavGrid = $Window.FindName('BottomNavGrid')
+
+    # Hide bottom navigation on home page
+    if ($currentIndex -eq 0) {
+        $bottomNavGrid.Visibility = 'Collapsed'
+    }
+    else {
+        $bottomNavGrid.Visibility = 'Visible'
+    }
+
+    # Update indicator colors based on current tab
+    # Indicator 1 (App Removal) - tab index 1
+    if ($currentIndex -ge 1) {
+        $progressIndicator1.Fill = $Window.Resources['ProgressActiveColor']
+    }
+    else {
+        $progressIndicator1.Fill = $Window.Resources['ProgressInactiveColor']
+    }
+
+    # Indicator 2 (Tweaks) - tab index 2
+    if ($currentIndex -ge 2) {
+        $progressIndicator2.Fill = $Window.Resources['ProgressActiveColor']
+    }
+    else {
+        $progressIndicator2.Fill = $Window.Resources['ProgressInactiveColor']
+    }
+
+    # Indicator 3 (Deployment Settings) - tab index 3
+    if ($currentIndex -ge 3) {
+        $progressIndicator3.Fill = $Window.Resources['ProgressActiveColor']
+    }
+    else {
+        $progressIndicator3.Fill = $Window.Resources['ProgressInactiveColor']
+    }
+}
--- a/Scripts/GUI/MainWindow-TweaksBuilder.ps1
+++ b/Scripts/GUI/MainWindow-TweaksBuilder.ps1
@@ -0,0 +1,511 @@
+# MainWindow-TweaksBuilder.ps1
+# Dynamic tweaks UI construction from Features.json, tweak state management, selection clear, and search/highlight.
+
+function Build-DynamicTweaks {
+    param(
+        [System.Windows.Window]$Window,
+        [int]$WinVersion
+    )
+
+    $featuresJson = LoadJsonFile -filePath $script:FeaturesFilePath -expectedVersion "1.0"
+
+    if (-not $featuresJson) {
+        throw "Unable to load Features.json file. The GUI cannot continue without feature definitions."
+    }
+
+    # Column containers
+    $col0 = $Window.FindName('Column0Panel')
+    $col1 = $Window.FindName('Column1Panel')
+    $col2 = $Window.FindName('Column2Panel')
+    $columns = @($col0, $col1, $col2) | Where-Object { $_ -ne $null }
+
+    # Clear all columns for fully dynamic panel creation
+    foreach ($col in $columns) {
+        if ($col) { $col.Children.Clear() }
+    }
+
+    $script:UiControlMappings = @{}
+    $script:CategoryCardMap = @{}
+    $script:TweaksCompactMode = $null
+    $script:TweaksCardsMovedFromCol2 = @()
+
+    function CreateLabeledCombo($parent, $labelText, $comboName, $items) {
+        # If only 2 items (No Change + one option), use a checkbox instead
+        if ($items.Count -eq 2) {
+            $checkbox = New-Object System.Windows.Controls.CheckBox
+            $checkbox.Content = $labelText
+            $checkbox.Name = $comboName
+            $checkbox.SetValue([System.Windows.Automation.AutomationProperties]::NameProperty, $labelText)
+            $checkbox.IsChecked = $false
+            $checkbox.Style = $Window.Resources["FeatureCheckboxStyle"]
+            $parent.Children.Add($checkbox) | Out-Null
+
+            # Register the checkbox with the window's name scope
+            try {
+                [System.Windows.NameScope]::SetNameScope($checkbox, [System.Windows.NameScope]::GetNameScope($Window))
+                $Window.RegisterName($comboName, $checkbox)
+            }
+            catch {
+                # Name might already be registered, ignore
+            }
+
+            return $checkbox
+        }
+
+        # Otherwise use a combobox for multiple options
+        # Wrap label in a Border for search highlighting
+        $lblBorder = New-Object System.Windows.Controls.Border
+        $lblBorder.Style = $Window.Resources['LabelBorderStyle']
+        $lblBorderName = "$comboName`_LabelBorder"
+        $lblBorder.Name = $lblBorderName
+
+        $lbl = New-Object System.Windows.Controls.TextBlock
+        $lbl.Text = $labelText
+        $lbl.Style = $Window.Resources['LabelStyle']
+        $labelName = "$comboName`_Label"
+        $lbl.Name = $labelName
+
+        $lblBorder.Child = $lbl
+        $parent.Children.Add($lblBorder) | Out-Null
+
+        # Register the label border with the window's name scope
+        try {
+            [System.Windows.NameScope]::SetNameScope($lblBorder, [System.Windows.NameScope]::GetNameScope($Window))
+            $Window.RegisterName($lblBorderName, $lblBorder)
+        }
+        catch {
+            # Name might already be registered, ignore
+        }
+
+        $combo = New-Object System.Windows.Controls.ComboBox
+        $combo.Name = $comboName
+        $combo.SetValue([System.Windows.Automation.AutomationProperties]::NameProperty, $labelText)
+        foreach ($item in $items) { $comboItem = New-Object System.Windows.Controls.ComboBoxItem; $comboItem.Content = $item; $combo.Items.Add($comboItem) | Out-Null }
+        $combo.SelectedIndex = 0
+        $parent.Children.Add($combo) | Out-Null
+
+        # Register the combo box with the window's name scope
+        try {
+            [System.Windows.NameScope]::SetNameScope($combo, [System.Windows.NameScope]::GetNameScope($Window))
+            $Window.RegisterName($comboName, $combo)
+        }
+        catch {
+            # Name might already be registered, ignore
+        }
+
+        return $combo
+    }
+
+    function GetWikiUrlForCategory($category) {
+        if (-not $category) { return 'https://github.com/Raphire/Win11Debloat/wiki/Features' }
+
+        $slug = $category.ToLowerInvariant()
+        $slug = $slug -replace '&', ''
+        $slug = $slug -replace '[^a-z0-9\s-]', ''
+        $slug = $slug -replace '\s', '-'
+
+        return "https://github.com/Raphire/Win11Debloat/wiki/Features#$slug"
+    }
+
+    function GetOrCreateCategoryCard($categoryObj) {
+        $categoryName = $categoryObj.Name
+        $categoryIcon = $categoryObj.Icon
+
+        if ($script:CategoryCardMap.ContainsKey($categoryName)) { return $script:CategoryCardMap[$categoryName] }
+
+        # Create a new card Border + StackPanel and add to shortest column
+        $target = $columns | Sort-Object @{Expression = { $_.Children.Count }; Ascending = $true }, @{Expression = { $columns.IndexOf($_) }; Ascending = $true } | Select-Object -First 1
+
+        $border = New-Object System.Windows.Controls.Border
+        $border.Style = $Window.Resources['CategoryCardBorderStyle']
+        $border.Tag = 'DynamicCategory'
+
+        $panel = New-Object System.Windows.Controls.StackPanel
+        $safe = ($categoryName -replace '[^a-zA-Z0-9_]', '_')
+        $panel.Name = "Category_{0}_Panel" -f $safe
+
+        $headerRow = New-Object System.Windows.Controls.StackPanel
+        $headerRow.Orientation = 'Horizontal'
+
+        # Add category icon
+        $icon = New-Object System.Windows.Controls.TextBlock
+        # Convert HTML entity to character (e.g., &#xE72E; -> actual character)
+        if ($categoryIcon -match '&#x([0-9A-Fa-f]+);') {
+            $hexValue = [Convert]::ToInt32($matches[1], 16)
+            $icon.Text = [char]$hexValue
+        }
+        $icon.Style = $Window.Resources['CategoryHeaderIcon']
+        $headerRow.Children.Add($icon) | Out-Null
+
+        $header = New-Object System.Windows.Controls.TextBlock
+        $header.Text = $categoryName
+        $header.Style = $Window.Resources['CategoryHeaderTextBlock']
+        $headerRow.Children.Add($header) | Out-Null
+
+        $helpIcon = New-Object System.Windows.Controls.TextBlock
+        $helpIcon.Text = '(?)'
+        $helpIcon.Style = $Window.Resources['CategoryHelpLinkTextStyle']
+
+        $helpBtn = New-Object System.Windows.Controls.Button
+        $helpBtn.Content = $helpIcon
+        $helpBtn.ToolTip = "Open wiki for more info on '$categoryName' tweaks"
+        $helpBtn.Tag = (GetWikiUrlForCategory -category $categoryName)
+        $helpBtn.Style = $Window.Resources['CategoryHelpLinkButtonStyle']
+        $helpBtn.Add_Click({
+                param($button, $e)
+                if ($button.Tag) { Start-Process $button.Tag }
+            })
+        $headerRow.Children.Add($helpBtn) | Out-Null
+
+        $panel.Children.Add($headerRow) | Out-Null
+
+        $border.Child = $panel
+        $target.Children.Add($border) | Out-Null
+
+        $script:CategoryCardMap[$categoryName] = $panel
+        return $panel
+    }
+
+    # Determine categories present (from lists and features)
+    $categoriesPresent = @{}
+    if ($featuresJson.UiGroups) {
+        foreach ($g in $featuresJson.UiGroups) { if ($g.Category) { $categoriesPresent[$g.Category] = $true } }
+    }
+    foreach ($f in $featuresJson.Features) { if ($f.Category) { $categoriesPresent[$f.Category] = $true } }
+
+    # Create cards in the order defined in Features.json Categories (if present)
+    $orderedCategories = @()
+    if ($featuresJson.Categories) {
+        foreach ($c in $featuresJson.Categories) {
+            $categoryName = if ($c -is [string]) { $c } else { $c.Name }
+            if ($categoriesPresent.ContainsKey($categoryName)) {
+                # Store the full category object (or create one with default icon for string categories)
+                $categoryObj = if ($c -is [string]) { @{Name = $c; Icon = '&#xE712;' } } else { $c }
+                $orderedCategories += $categoryObj
+            }
+        }
+    }
+    else {
+        # For backward compatibility, create category objects from keys
+        foreach ($catName in $categoriesPresent.Keys) {
+            $orderedCategories += @{Name = $catName; Icon = '&#xE712;' }
+        }
+    }
+
+    foreach ($categoryObj in $orderedCategories) {
+        $categoryName = $categoryObj.Name
+
+        # Create/get card for this category
+        $panel = GetOrCreateCategoryCard -categoryObj $categoryObj
+        if (-not $panel) { continue }
+
+        # Collect groups and features for this category, then sort by priority
+        $categoryItems = @()
+
+        # Add any groups for this category
+        if ($featuresJson.UiGroups) {
+            $groupIndex = 0
+            foreach ($group in $featuresJson.UiGroups) {
+                if ($group.Category -ne $categoryName) { $groupIndex++; continue }
+                $categoryItems += [PSCustomObject]@{
+                    Type          = 'group'
+                    Data          = $group
+                    Priority      = if ($null -ne $group.Priority) { $group.Priority } else { [int]::MaxValue }
+                    OriginalIndex = $groupIndex
+                }
+                $groupIndex++
+            }
+        }
+
+        # Add individual features for this category
+        $featureIndex = 0
+        foreach ($feature in $featuresJson.Features) {
+            if ($feature.Category -ne $categoryName) { $featureIndex++; continue }
+
+            # Check version and feature compatibility using Features.json
+            if (($feature.MinVersion -and $WinVersion -lt $feature.MinVersion) -or ($feature.MaxVersion -and $WinVersion -gt $feature.MaxVersion) -or ($feature.FeatureId -eq 'DisableModernStandbyNetworking' -and (-not $script:ModernStandbySupported))) {
+                $featureIndex++; continue
+            }
+
+            # Skip if feature part of a group
+            $inGroup = $false
+            if ($featuresJson.UiGroups) {
+                foreach ($g in $featuresJson.UiGroups) { foreach ($val in $g.Values) { if ($val.FeatureIds -contains $feature.FeatureId) { $inGroup = $true; break } }; if ($inGroup) { break } }
+            }
+            if ($inGroup) { $featureIndex++; continue }
+
+            $categoryItems += [PSCustomObject]@{
+                Type          = 'feature'
+                Data          = $feature
+                Priority      = if ($null -ne $feature.Priority) { $feature.Priority } else { [int]::MaxValue }
+                OriginalIndex = $featureIndex
+            }
+            $featureIndex++
+        }
+
+        # Sort by priority first, then by original index for items with same/no priority
+        $sortedItems = $categoryItems | Sort-Object -Property Priority, OriginalIndex
+
+        # Render sorted items
+        foreach ($item in $sortedItems) {
+            if ($item.Type -eq 'group') {
+                $group = $item.Data
+                $items = @('No Change') + ($group.Values | ForEach-Object { $_.Label })
+                $comboName = 'Group_{0}Combo' -f $group.GroupId
+                $combo = CreateLabeledCombo -parent $panel -labelText $group.Label -comboName $comboName -items $items
+                # attach tooltip from UiGroups if present
+                if ($group.ToolTip) {
+                    $tipBlock = New-Object System.Windows.Controls.TextBlock
+                    $tipBlock.Text = $group.ToolTip
+                    $tipBlock.TextWrapping = 'Wrap'
+                    $tipBlock.MaxWidth = 420
+                    $combo.ToolTip = $tipBlock
+                    $lblBorderObj = $null
+                    try { $lblBorderObj = $Window.FindName("$comboName`_LabelBorder") } catch {}
+                    if ($lblBorderObj) { $lblBorderObj.ToolTip = $tipBlock }
+                }
+                $script:UiControlMappings[$comboName] = @{ Type = 'group'; Values = $group.Values; Label = $group.Label; Category = $categoryName }
+            }
+            elseif ($item.Type -eq 'feature') {
+                $feature = $item.Data
+                $opt = 'Apply'
+                if ($feature.FeatureId -match '^Disable') { $opt = 'Disable' } elseif ($feature.FeatureId -match '^Enable') { $opt = 'Enable' }
+                $items = @('No Change', $opt)
+                $comboName = ("Feature_{0}_Combo" -f $feature.FeatureId) -replace '[^a-zA-Z0-9_]', ''
+                $combo = CreateLabeledCombo -parent $panel -labelText $feature.Label -comboName $comboName -items $items
+                # attach tooltip from Features.json if present, and include the disabled-state reason
+                if ($feature.ToolTip -or $feature.DisableWhenApplied -eq $true) {
+                    $tooltipText = $feature.ToolTip
+                    if ($feature.DisableWhenApplied -eq $true) {
+                        $tooltipText = "This tweak is already applied and cannot be undone automatically. Visit the Win11Debloat wiki for instructions on how to manually revert this change."
+                    }
+
+                    $tipBlock = New-Object System.Windows.Controls.TextBlock
+                    $tipBlock.Text = $tooltipText
+                    $tipBlock.TextWrapping = 'Wrap'
+                    $tipBlock.MaxWidth = 420
+                    $combo.ToolTip = $tipBlock
+                    [System.Windows.Controls.ToolTipService]::SetShowOnDisabled($combo, $true)
+                    $lblBorderObj = $null
+                    try { $lblBorderObj = $Window.FindName("$comboName`_LabelBorder") } catch {}
+                    if ($lblBorderObj) { $lblBorderObj.ToolTip = $tipBlock }
+                }
+                $script:UiControlMappings[$comboName] = @{ Type = 'feature'; FeatureId = $feature.FeatureId; Label = $feature.Label; Category = $categoryName }
+            }
+        }
+    }
+
+    # Build a feature-label lookup so GenerateOverview can resolve feature IDs without reloading JSON
+    $script:FeatureLabelLookup = @{}
+    $script:UndoFeatureLabelLookup = @{}
+    foreach ($f in $featuresJson.Features) {
+        $script:FeatureLabelLookup[$f.FeatureId] = $f.Label
+        $script:UndoFeatureLabelLookup[$f.FeatureId] = $f.UndoLabel
+    }
+}
+
+function Update-CurrentTweakSystemState {
+    param(
+        [System.Windows.Window]$Window,
+        [bool]$ApplyToUi
+    )
+
+    if (-not $script:UiControlMappings) { return }
+    if (-not $script:Features) { return }
+
+    $featuresJson = LoadJsonFile -filePath $script:FeaturesFilePath -expectedVersion "1.0"
+    if (-not $featuresJson) { return }
+
+    $groupMap = @{}
+    if ($featuresJson.UiGroups) {
+        foreach ($g in $featuresJson.UiGroups) {
+            $groupMap[$g.GroupId] = $g
+        }
+    }
+
+    foreach ($controlName in $script:UiControlMappings.Keys) {
+        $control = $Window.FindName($controlName)
+        if (-not $control) { continue }
+        $mapping = $script:UiControlMappings[$controlName]
+
+        if ($control -is [System.Windows.Controls.CheckBox] -and $mapping.Type -eq 'feature') {
+            $applied = $false
+            try { $applied = [bool](Test-FeatureApplied -FeatureId $mapping.FeatureId) } catch {}
+            $featureObj = $script:Features[$mapping.FeatureId]
+            $disableWhenApplied = $featureObj -and $featureObj.DisableWhenApplied -eq $true
+            Add-Member -InputObject $control -MemberType NoteProperty -Name 'SystemState' -Value $applied -Force
+            Add-Member -InputObject $control -MemberType NoteProperty -Name 'DisableWhenApplied' -Value $disableWhenApplied -Force
+
+            if ($ApplyToUi) {
+                $control.IsChecked = $applied
+                $control.IsEnabled = -not ($applied -and $disableWhenApplied)
+                Add-Member -InputObject $control -MemberType NoteProperty -Name 'InitialState' -Value $applied -Force
+            }
+        }
+        elseif ($control -is [System.Windows.Controls.ComboBox] -and $mapping.Type -eq 'group') {
+            $groupId = $null
+            if ($controlName -match '^Group_(.+)Combo$') { $groupId = $matches[1] }
+            $activeIndex = 0
+            if ($groupId -and $groupMap.ContainsKey($groupId)) {
+                try { $activeIndex = Get-CurrentGroupActiveIndex -Group $groupMap[$groupId] } catch {}
+            }
+            Add-Member -InputObject $control -MemberType NoteProperty -Name 'SystemIndex' -Value $activeIndex -Force
+
+            if ($ApplyToUi) {
+                $control.SelectedIndex = $activeIndex
+                Add-Member -InputObject $control -MemberType NoteProperty -Name 'InitialIndex' -Value $activeIndex -Force
+            }
+        }
+    }
+}
+
+function Load-CurrentTweakStateIntoUI {
+    param([System.Windows.Window]$Window)
+
+    Update-CurrentTweakSystemState -Window $Window -ApplyToUi:$true
+}
+
+function Reset-TweaksToSystemState {
+    param(
+        [System.Windows.Window]$Window,
+        [bool]$LoadSystemState
+    )
+
+    if (-not $script:UiControlMappings) { return }
+
+    foreach ($controlName in $script:UiControlMappings.Keys) {
+        $control = $Window.FindName($controlName)
+        if (-not $control) { continue }
+
+        if ($control -is [System.Windows.Controls.CheckBox]) {
+            if ($LoadSystemState) {
+                # Set checkbox to the currently applied state from registry
+                $applied = if ($null -ne $control.PSObject.Properties['SystemState']) { [bool]$control.SystemState } else { $false }
+                $disableWhenApplied = $null -ne $control.PSObject.Properties['DisableWhenApplied'] -and [bool]$control.DisableWhenApplied
+                $control.IsChecked = $applied
+                $control.IsEnabled = -not ($applied -and $disableWhenApplied)
+                Add-Member -InputObject $control -MemberType NoteProperty -Name 'InitialState' -Value $applied -Force
+            }
+            else {
+                # Clear the checkbox
+                $control.IsChecked = $false
+                $control.IsEnabled = $true
+                Add-Member -InputObject $control -MemberType NoteProperty -Name 'InitialState' -Value $false -Force
+            }
+        }
+        elseif ($control -is [System.Windows.Controls.ComboBox]) {
+            if ($LoadSystemState) {
+                # Set combobox to the currently applied state from registry
+                $idx = if ($null -ne $control.PSObject.Properties['SystemIndex']) { [int]$control.SystemIndex } else { 0 }
+                $control.SelectedIndex = $idx
+                Add-Member -InputObject $control -MemberType NoteProperty -Name 'InitialIndex' -Value $idx -Force
+            }
+            else {
+                # Reset to first item (No Change)
+                $control.SelectedIndex = 0
+                Add-Member -InputObject $control -MemberType NoteProperty -Name 'InitialIndex' -Value 0 -Force
+            }
+        }
+    }
+}
+
+function Update-TweaksResponsiveColumns {
+    param([System.Windows.Window]$Window)
+
+    $tweaksGrid = $Window.FindName('TweaksGrid')
+    $col0 = $Window.FindName('Column0Panel')
+    $col1 = $Window.FindName('Column1Panel')
+    $col2 = $Window.FindName('Column2Panel')
+
+    if (-not $tweaksGrid -or -not $col0 -or -not $col1 -or -not $col2) { return }
+    if ($tweaksGrid.ColumnDefinitions.Count -lt 3) { return }
+    if ($null -eq $script:TweaksCardsMovedFromCol2) { $script:TweaksCardsMovedFromCol2 = @() }
+
+    $useTwoColumns = $Window.ActualWidth -lt 1200
+    if ($script:TweaksCompactMode -eq $useTwoColumns) { return }
+    $script:TweaksCompactMode = $useTwoColumns
+
+    if ($useTwoColumns) {
+        $tweaksGrid.ColumnDefinitions[0].Width = [System.Windows.GridLength]::new(1, [System.Windows.GridUnitType]::Star)
+        $tweaksGrid.ColumnDefinitions[1].Width = [System.Windows.GridLength]::new(1, [System.Windows.GridUnitType]::Star)
+        $tweaksGrid.ColumnDefinitions[2].Width = [System.Windows.GridLength]::new(0)
+        $col2.Visibility = 'Collapsed'
+
+        # Move third-column cards once when entering compact mode.
+        $cardsToMove = @($col2.Children) | Where-Object { $_ -is [System.Windows.UIElement] }
+        $script:TweaksCardsMovedFromCol2 = @($cardsToMove)
+        $col2.Children.Clear()
+        $targetColumns = @($col0, $col1)
+        foreach ($card in $cardsToMove) {
+            $target = $targetColumns |
+                Sort-Object @{Expression = { $_.Children.Count }; Ascending = $true }, @{Expression = { $targetColumns.IndexOf($_) }; Ascending = $true } |
+                Select-Object -First 1
+            $target.Children.Add($card) | Out-Null
+        }
+        return
+    }
+
+    $tweaksGrid.ColumnDefinitions[0].Width = [System.Windows.GridLength]::new(1, [System.Windows.GridUnitType]::Star)
+    $tweaksGrid.ColumnDefinitions[1].Width = [System.Windows.GridLength]::new(1, [System.Windows.GridUnitType]::Star)
+    $tweaksGrid.ColumnDefinitions[2].Width = [System.Windows.GridLength]::new(1, [System.Windows.GridUnitType]::Star)
+    $col2.Visibility = 'Visible'
+
+    foreach ($card in (@($script:TweaksCardsMovedFromCol2) | Where-Object { $_ -is [System.Windows.UIElement] })) {
+        if ($col0.Children.Contains($card)) {
+            $col0.Children.Remove($card) | Out-Null
+        }
+        elseif ($col1.Children.Contains($card)) {
+            $col1.Children.Remove($card) | Out-Null
+        }
+        $col2.Children.Add($card) | Out-Null
+    }
+    $script:TweaksCardsMovedFromCol2 = @()
+}
+
+function Clear-TweakSelections {
+    param([System.Windows.Window]$Window)
+
+    if (-not $script:UiControlMappings) { return }
+
+    foreach ($controlName in $script:UiControlMappings.Keys) {
+        $control = $Window.FindName($controlName)
+        if ($control -is [System.Windows.Controls.CheckBox]) {
+            $control.IsChecked = $false
+            $control.IsEnabled = $true
+        }
+        elseif ($control -is [System.Windows.Controls.ComboBox]) {
+            $control.SelectedIndex = 0
+        }
+    }
+}
+
+function Clear-TweakHighlights {
+    param([System.Windows.Window]$Window)
+
+    $col0 = $Window.FindName('Column0Panel')
+    $col1 = $Window.FindName('Column1Panel')
+    $col2 = $Window.FindName('Column2Panel')
+    $columns = @($col0, $col1, $col2) | Where-Object { $_ -ne $null }
+    foreach ($column in $columns) {
+        foreach ($card in $column.Children) {
+            if ($card -is [System.Windows.Controls.Border] -and $card.Child -is [System.Windows.Controls.StackPanel]) {
+                foreach ($control in $card.Child.Children) {
+                    if ($control -is [System.Windows.Controls.CheckBox] -or
+                        ($control -is [System.Windows.Controls.Border] -and $control.Name -like '*_LabelBorder')) {
+                        $control.Background = [System.Windows.Media.Brushes]::Transparent
+                    }
+                }
+            }
+        }
+    }
+}
+
+function Test-ComboBoxContainsMatch {
+    param ([System.Windows.Controls.ComboBox]$ComboBox, [string]$SearchText)
+
+    foreach ($item in $ComboBox.Items) {
+        $itemText = if ($item -is [System.Windows.Controls.ComboBoxItem]) { $item.Content.ToString().ToLower() } else { $item.ToString().ToLower() }
+        if ($itemText.Contains($SearchText)) { return $true }
+    }
+    return $false
+}
--- a/Scripts/GUI/MainWindow-WindowChrome.ps1
+++ b/Scripts/GUI/MainWindow-WindowChrome.ps1
@@ -0,0 +1,215 @@
+# MainWindow-WindowChrome.ps1
+# Window sizing, DPI-aware coordinate conversion, maximized-window taskbar-constraint helpers, and UI animations.
+
+function Register-MaximizedWindowHelper {
+    if (-not ([System.Management.Automation.PSTypeName]'Win11Debloat.MaximizedWindowHelper').Type) {
+        Add-Type -Namespace Win11Debloat -Name MaximizedWindowHelper `
+            -ReferencedAssemblies 'PresentationFramework','System.Windows.Forms','System.Drawing' `
+            -MemberDefinition @'
+            [System.Runtime.InteropServices.StructLayout(System.Runtime.InteropServices.LayoutKind.Sequential)]
+            private struct MINMAXINFO {
+                public POINT ptReserved, ptMaxSize, ptMaxPosition, ptMinTrackSize, ptMaxTrackSize;
+            }
+            [System.Runtime.InteropServices.StructLayout(System.Runtime.InteropServices.LayoutKind.Sequential)]
+            private struct POINT { public int x, y; }
+
+            [System.Runtime.InteropServices.DllImport("user32.dll")]
+            private static extern System.IntPtr MonitorFromWindow(System.IntPtr hwnd, uint dwFlags);
+
+            [System.Runtime.InteropServices.DllImport("user32.dll", CharSet = System.Runtime.InteropServices.CharSet.Auto)]
+            private static extern bool GetMonitorInfo(System.IntPtr hMonitor, ref MONITORINFO lpmi);
+
+            [System.Runtime.InteropServices.StructLayout(System.Runtime.InteropServices.LayoutKind.Sequential)]
+            private struct RECT {
+                public int Left, Top, Right, Bottom;
+            }
+
+            [System.Runtime.InteropServices.StructLayout(System.Runtime.InteropServices.LayoutKind.Sequential, CharSet = System.Runtime.InteropServices.CharSet.Auto)]
+            private struct MONITORINFO {
+                public int cbSize;
+                public RECT rcMonitor;
+                public RECT rcWork;
+                public uint dwFlags;
+            }
+
+            public static System.IntPtr WmGetMinMaxInfoHook(
+                System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) {
+                if (msg == 0x0024) { // WM_GETMINMAXINFO
+                    var mmi = (MINMAXINFO)System.Runtime.InteropServices.Marshal.PtrToStructure(
+                        lParam, typeof(MINMAXINFO));
+
+                    const uint MONITOR_DEFAULTTONEAREST = 0x00000002;
+                    var monitor = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST);
+                    var monitorInfo = new MONITORINFO();
+                    monitorInfo.cbSize = System.Runtime.InteropServices.Marshal.SizeOf(typeof(MONITORINFO));
+
+                    if (monitor != System.IntPtr.Zero && GetMonitorInfo(monitor, ref monitorInfo)) {
+                        mmi.ptMaxPosition.x = monitorInfo.rcWork.Left - monitorInfo.rcMonitor.Left;
+                        mmi.ptMaxPosition.y = monitorInfo.rcWork.Top - monitorInfo.rcMonitor.Top;
+                        mmi.ptMaxSize.x     = monitorInfo.rcWork.Right - monitorInfo.rcWork.Left;
+                        mmi.ptMaxSize.y     = monitorInfo.rcWork.Bottom - monitorInfo.rcWork.Top;
+                    }
+                    else {
+                        var screen = System.Windows.Forms.Screen.FromHandle(hwnd);
+                        var wa = screen.WorkingArea;
+                        var bounds = screen.Bounds;
+                        mmi.ptMaxPosition.x = wa.Left - bounds.Left;
+                        mmi.ptMaxPosition.y = wa.Top - bounds.Top;
+                        mmi.ptMaxSize.x     = wa.Width;
+                        mmi.ptMaxSize.y     = wa.Height;
+                    }
+
+                    System.Runtime.InteropServices.Marshal.StructureToPtr(mmi, lParam, true);
+                }
+                return System.IntPtr.Zero;
+            }
+'@
+    }
+}
+
+# Convert screen-pixel coordinates to WPF device-independent pixels (DIP)
+function ConvertTo-ScreenPointToDip {
+    param(
+        [System.Windows.Window]$Window,
+        [double]$X,
+        [double]$Y
+    )
+
+    $source = [System.Windows.PresentationSource]::FromVisual($Window)
+    if ($null -eq $source -or $null -eq $source.CompositionTarget) {
+        return [System.Windows.Point]::new($X, $Y)
+    }
+
+    return $source.CompositionTarget.TransformFromDevice.Transform([System.Windows.Point]::new($X, $Y))
+}
+
+# Convert screen-pixel size to WPF device-independent size
+function ConvertTo-ScreenPixelsToDip {
+    param(
+        [System.Windows.Window]$Window,
+        [double]$Width,
+        [double]$Height
+    )
+
+    $topLeft = ConvertTo-ScreenPointToDip -Window $Window -X 0 -Y 0
+    $bottomRight = ConvertTo-ScreenPointToDip -Window $Window -X $Width -Y $Height
+    return [System.Windows.Size]::new($bottomRight.X - $topLeft.X, $bottomRight.Y - $topLeft.Y)
+}
+
+# Get the screen that currently contains the window
+function Get-WindowScreen {
+    param([System.Windows.Window]$Window)
+
+    $hwnd = (New-Object System.Windows.Interop.WindowInteropHelper($Window)).Handle
+    if ($hwnd -eq [IntPtr]::Zero) {
+        return $null
+    }
+
+    return [System.Windows.Forms.Screen]::FromHandle($hwnd)
+}
+
+# Update window border/corner chrome when transitioning between Normal and Maximized
+function Update-MainWindowChrome {
+    param(
+        [System.Windows.Window]$Window,
+        [System.Windows.Controls.Border]$MainBorder,
+        [System.Windows.Controls.Border]$TitleBarBackground,
+        [object]$NormalWindowShadow
+    )
+
+    $windowStateMaximized = [System.Windows.WindowState]::Maximized
+    $chrome = [System.Windows.Shell.WindowChrome]::GetWindowChrome($Window)
+
+    if ($Window.WindowState -eq $windowStateMaximized) {
+        $MainBorder.Margin = [System.Windows.Thickness]::new(0)
+        $MainBorder.BorderThickness = [System.Windows.Thickness]::new(0)
+        $MainBorder.CornerRadius = [System.Windows.CornerRadius]::new(0)
+        $MainBorder.Effect = $null
+        $TitleBarBackground.CornerRadius = [System.Windows.CornerRadius]::new(0)
+        # Zero out resize borders when maximized so the entire title bar row is draggable
+        if ($chrome) { $chrome.ResizeBorderThickness = [System.Windows.Thickness]::new(0) }
+    }
+    else {
+        $MainBorder.Margin = [System.Windows.Thickness]::new(0)
+        $MainBorder.BorderThickness = [System.Windows.Thickness]::new(1)
+        $MainBorder.CornerRadius = [System.Windows.CornerRadius]::new(8)
+        $MainBorder.Effect = $NormalWindowShadow
+        $TitleBarBackground.CornerRadius = [System.Windows.CornerRadius]::new(8, 8, 0, 0)
+        if ($chrome) { $chrome.ResizeBorderThickness = [System.Windows.Thickness]::new(5) }
+    }
+}
+
+# Set the initial window size and center on screen (normal state only)
+function Set-MainWindowInitialSize {
+    param(
+        [System.Windows.Window]$Window,
+        [double]$InitialNormalMaxWidth = 1400.0
+    )
+
+    if ($Window.WindowState -ne [System.Windows.WindowState]::Normal) {
+        return
+    }
+
+    $screen = Get-WindowScreen -Window $Window
+    if ($null -eq $screen) {
+        return
+    }
+
+    $workingAreaTopLeftDip = ConvertTo-ScreenPointToDip -Window $Window -X $screen.WorkingArea.Left -Y $screen.WorkingArea.Top
+    $workingAreaDip = ConvertTo-ScreenPixelsToDip -Window $Window -Width $screen.WorkingArea.Width -Height $screen.WorkingArea.Height
+    $Window.Width = [Math]::Min($InitialNormalMaxWidth, $workingAreaDip.Width)
+    $Window.Left = $workingAreaTopLeftDip.X + (($workingAreaDip.Width - $Window.Width) / 2)
+}
+
+# Update the content grid margin to constrain max content width
+function Update-MainWindowContentMargin {
+    param(
+        [System.Windows.Window]$Window,
+        [System.Windows.Controls.Grid]$ContentGrid,
+        [double]$MaxContentWidth = 1600.0
+    )
+
+    $w = $Window.ActualWidth
+    if ($w -gt $MaxContentWidth) {
+        $gutter = [Math]::Floor(($w - $MaxContentWidth) / 2)
+        $ContentGrid.Margin = [System.Windows.Thickness]::new($gutter, 0, $gutter, 0)
+    }
+    else {
+        $ContentGrid.Margin = [System.Windows.Thickness]::new(0)
+    }
+}
+
+# Vertically center the home content panel
+function Update-MainWindowHomeContentPosition {
+    param(
+        [System.Windows.Window]$Window,
+        [System.Windows.Controls.Panel]$HomeContentPanel
+    )
+
+    if ($HomeContentPanel) {
+        $availableHeight = $Window.ActualHeight - 32  # subtract title bar height
+        if ($availableHeight -gt 0) {
+            $topMargin = ($availableHeight - 584) * 0.5
+            $HomeContentPanel.Margin = [System.Windows.Thickness]::new(0, $topMargin, 0, 0)
+        }
+    }
+}
+
+function Start-DropdownArrowAnimation {
+    param(
+        [System.Windows.Controls.TextBlock]$Arrow,
+        [double]$Angle
+    )
+
+    if (-not $Arrow) { return }
+
+    $animation = New-Object System.Windows.Media.Animation.DoubleAnimation
+    $animation.To = $Angle
+    $animation.Duration = [System.Windows.Duration]::new([System.TimeSpan]::FromMilliseconds(200))
+
+    $ease = New-Object System.Windows.Media.Animation.CubicEase
+    $ease.EasingMode = 'EaseOut'
+    $animation.EasingFunction = $ease
+
+    $Arrow.RenderTransform.BeginAnimation([System.Windows.Media.RotateTransform]::AngleProperty, $animation)
+}
--- a/Scripts/GUI/Show-MainWindow.ps1
+++ b/Scripts/GUI/Show-MainWindow.ps1
--- a/Win11Debloat.ps1
+++ b/Win11Debloat.ps1
@@ -331,6 +331,11 @@ if (-not $script:WingetInstalled -and -not $Silent) {
 . "$PSScriptRoot/Scripts/GUI/Show-RestoreBackupWindow.ps1"
 . "$PSScriptRoot/Scripts/GUI/RestoreBackupDialogFeatureLists.ps1"
 . "$PSScriptRoot/Scripts/GUI/Show-RestoreBackupDialog.ps1"
+. "$PSScriptRoot/Scripts/GUI/MainWindow-WindowChrome.ps1"
+. "$PSScriptRoot/Scripts/GUI/MainWindow-AppSelection.ps1"
+. "$PSScriptRoot/Scripts/GUI/MainWindow-TweaksBuilder.ps1"
+. "$PSScriptRoot/Scripts/GUI/MainWindow-Navigation.ps1"
+. "$PSScriptRoot/Scripts/GUI/MainWindow-Deployment.ps1"
 . "$PSScriptRoot/Scripts/GUI/Show-MainWindow.ps1"
 . "$PSScriptRoot/Scripts/GUI/Show-AboutDialog.ps1"
 . "$PSScriptRoot/Scripts/GUI/Show-Bubble.ps1"