Fixed the Notification errors

scripts/Show-Notification.ps1

@@ -20,21 +20,40 @@ param(
     [double]$FileSizeMB    = 0
 )
 
+$ErrorActionPreference = 'Stop'
+
 Add-Type -AssemblyName PresentationFramework
 Add-Type -AssemblyName WindowsBase
 Add-Type -AssemblyName System.Drawing
 
-$hBitmap  = [System.Drawing.SystemIcons]::Shield.ToBitmap().GetHbitmap()
-$wpfImage = [System.Windows.Interop.Imaging]::CreateBitmapSourceFromHBitmap(
+Add-Type -TypeDefinition @"
+using System;
+using System.Runtime.InteropServices;
+public class GdiHelper {
+    [DllImport("gdi32.dll")]
+    public static extern bool DeleteObject(IntPtr hObject);
+}
+"@
+
+$hBitmap    = [System.Drawing.SystemIcons]::Shield.ToBitmap().GetHbitmap()
+$wpfShield  = [System.Windows.Interop.Imaging]::CreateBitmapSourceFromHBitmap(
     $hBitmap, [IntPtr]::Zero, [System.Windows.Int32Rect]::Empty,
     [System.Windows.Media.Imaging.BitmapSizeOptions]::FromEmptyOptions()
 )
-[System.Runtime.InteropServices.Marshal]::DeleteObject($hBitmap)
+[GdiHelper]::DeleteObject($hBitmap) | Out-Null
+
+$hBitmap    = [System.Drawing.SystemIcons]::Warning.ToBitmap().GetHbitmap()
+$wpfWarning = [System.Windows.Interop.Imaging]::CreateBitmapSourceFromHBitmap(
+    $hBitmap, [IntPtr]::Zero, [System.Windows.Int32Rect]::Empty,
+    [System.Windows.Media.Imaging.BitmapSizeOptions]::FromEmptyOptions()
+)
+[GdiHelper]::DeleteObject($hBitmap) | Out-Null
 
 if ($Type -eq 'BufferStarted') {
     [xml]$xaml = @"
 <Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-        Title="IT Screen Recorder" Height="320" Width="440"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        Title="IT Screen Recorder" SizeToContent="Height" Width="440"
         WindowStartupLocation="CenterScreen" ResizeMode="NoResize"
         Topmost="True" ShowInTaskbar="False">
     <Grid Margin="20">
@@ -69,8 +88,8 @@ if ($Type -eq 'BufferStarted') {
     $txtContact = $window.FindName('TxtContact')
     $btnOK      = $window.FindName('BtnOK')
 
-    $imgHeader.Source = $wpfImage
-    $imgTray.Source   = $wpfImage
+    $imgHeader.Source = $wpfWarning
+    $imgTray.Source   = $wpfShield
     $txtContact.Text  = "Questions? Contact IT at $ContactNumber"
 
     $txtBody.Inlines.Add("Your screen is being recorded into a rolling $BufferMinutes-minute replay buffer. Nothing is saved until you request it.`n`nTo save a clip, ")
@@ -86,7 +105,8 @@ if ($Type -eq 'BufferStarted') {
 } else {
     [xml]$xaml = @"
 <Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-        Title="IT Screen Recorder" Height="260" Width="440"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        Title="IT Screen Recorder" SizeToContent="Height" Width="440"
         WindowStartupLocation="CenterScreen" ResizeMode="NoResize"
         Topmost="True" ShowInTaskbar="False">
     <Grid Margin="20">
@@ -113,7 +133,7 @@ if ($Type -eq 'BufferStarted') {
     $txtContact = $window.FindName('TxtContact')
     $btnOK      = $window.FindName('BtnOK')
 
-    $imgHeader.Source = $wpfImage
+    $imgHeader.Source = $wpfShield
     $txtContact.Text  = "Questions? Contact IT at $ContactNumber"
 
     $txtBody.Inlines.Add("Your replay has been saved ($FileSizeMB MB):`n")
@@ -124,18 +144,19 @@ if ($Type -eq 'BufferStarted') {
 }
 
 # Countdown timer — auto-dismisses after 30 seconds
-$script:tick = 30
-$btnOK.Content = "OK (30)"
+# Use a hashtable for shared state so the closure captures it by reference correctly
+$state = @{ Tick = 30 }
+$btnOK.Content = 'OK (30)'
 $timer = New-Object System.Windows.Threading.DispatcherTimer
 $timer.Interval = [TimeSpan]::FromSeconds(1)
 $timer.Add_Tick({
-    $script:tick--
-    $btnOK.Content = "OK ($script:tick)"
-    if ($script:tick -le 0) {
+    $state.Tick--
+    $btnOK.Content = "OK ($($state.Tick))"
+    if ($state.Tick -le 0) {
         $timer.Stop()
         $window.Close()
     }
-})
+}.GetNewClosure())
 $timer.Start()
-$btnOK.Add_Click({ $timer.Stop(); $window.Close() })
+$btnOK.Add_Click({ $timer.Stop(); $window.Close() }.GetNewClosure())
 $window.ShowDialog() | Out-Null