fix a few things

rad/views.py

@@ -594,7 +594,8 @@ def media_cleanup(request):
         removed_files = set(media_inventory_before) - set(media_inventory_after)
 
         output = out.getvalue().strip()
-        recovered_size = sum(media_inventory_before[path] for path in removed_files)
+        # Use before/after total delta so reported recovered space matches real disk impact.
+        recovered_size = max(0, media_size_before - media_size_after)
         context.update(
             {
                 "ran": True,