Aggiunge script registrazione task UTF16

scripts/Register-BakRestTask.ps1

@@ -0,0 +1,39 @@
+param(
+    [Parameter(Mandatory = $true)]
+    [ValidateSet("Notifier", "BackupOnLogoff")]
+    [string]$Task,
+
+    [string]$TaskFolder = "BakRest"
+)
+
+$ErrorActionPreference = "Stop"
+
+$repoRoot = Split-Path -Parent $PSScriptRoot
+
+if ($Task -eq "Notifier") {
+    $taskName = "$TaskFolder\ServerNotifierEvery30Minutes"
+    $xmlPath = Join-Path $repoRoot "tasks\BakRestServerNotifierEvery30Minutes.xml"
+} else {
+    $taskName = "$TaskFolder\BackupOnLogoff"
+    $xmlPath = Join-Path $repoRoot "tasks\BakRestBackupOnLogoff.xml"
+}
+
+if (-not (Test-Path -LiteralPath $xmlPath)) {
+    throw "Task XML not found: $xmlPath"
+}
+
+$xml = Get-Content -LiteralPath $xmlPath -Raw
+$xml = $xml -replace 'encoding="UTF-8"', 'encoding="UTF-16"'
+
+$tempXml = Join-Path $env:TEMP ("bakrest-task-{0}.xml" -f ([Guid]::NewGuid()))
+[System.IO.File]::WriteAllText($tempXml, $xml, [System.Text.Encoding]::Unicode)
+
+try {
+    schtasks.exe /Create /TN $taskName /XML $tempXml /F
+    if ($LASTEXITCODE -ne 0) {
+        throw "schtasks failed with exit code $LASTEXITCODE"
+    }
+    Write-Host "Registered task: $taskName"
+} finally {
+    Remove-Item -LiteralPath $tempXml -Force -ErrorAction SilentlyContinue
+}