fix int overflow for large recoveries

windows/frd.ps1

@@ -104,7 +104,7 @@ function ShowSizes() {
         [string]$description,
 
         [Parameter(Mandatory = $true, Position = 1)]
-        [int]$sizeInBytes
+        [Int64]$sizeInBytes
     )
 
     # Convert the size to kilobytes (KB)
@@ -203,7 +203,7 @@ function Show-Duplicates {
     )
 
     $num_dups = 0
-    $total_dup_size = 0
+    $total_dup_size = 0.0
     
     foreach ($entry in $files.GetEnumerator()) {
         $dup_files = $entry.Value