Fix progress, update profiles, and documentation links (#4845)

* Improve O&O ShutUp10++ download flow

* Refine Windows Update profile behavior and docs

* Fix documentation link regressions

* Restore updates when applying recommended profile

functions/private/Save-WinUtilFile.ps1

@@ -0,0 +1,59 @@
+function Save-WinUtilFile {
+    <#
+    .SYNOPSIS
+        Downloads a file and reports transfer progress.
+    #>
+    param(
+        [Parameter(Mandatory)]
+        [uri]$Uri,
+
+        [Parameter(Mandatory)]
+        [string]$DestinationPath,
+
+        [Parameter(Mandatory)]
+        [scriptblock]$ProgressCallback
+    )
+
+    $response = $null
+    $responseStream = $null
+    $outputStream = $null
+
+    try {
+        $request = [System.Net.WebRequest]::Create($Uri)
+        $response = $request.GetResponse()
+        $totalBytes = $response.ContentLength
+        $responseStream = $response.GetResponseStream()
+        $outputStream = [System.IO.File]::Create($DestinationPath)
+        $buffer = New-Object byte[] 81920
+        $downloadedBytes = 0L
+        $lastPercent = -1
+
+        while (($bytesRead = $responseStream.Read($buffer, 0, $buffer.Length)) -gt 0) {
+            $outputStream.Write($buffer, 0, $bytesRead)
+            $downloadedBytes += $bytesRead
+
+            if ($totalBytes -gt 0) {
+                $percent = [Math]::Min(100, [int](($downloadedBytes / $totalBytes) * 100))
+                if ($percent -ne $lastPercent) {
+                    & $ProgressCallback $percent
+                    $lastPercent = $percent
+                }
+            }
+        }
+
+        if ($lastPercent -ne 100) {
+            & $ProgressCallback 100
+        }
+    }
+    finally {
+        if ($null -ne $outputStream) {
+            $outputStream.Dispose()
+        }
+        if ($null -ne $responseStream) {
+            $responseStream.Dispose()
+        }
+        if ($null -ne $response) {
+            $response.Dispose()
+        }
+    }
+}