Separate completed transfers and retain original file extensions

scripts/prepare-nas-storage.sh

@@ -29,7 +29,7 @@ docker run --rm --network none --user 0:0 \
   alpine:3.22 sh -eu -c '
     chown -R "$1:$2" /database /uploads
     chmod 700 /database /uploads
-    for folder in originals temporary chunks; do
+    for folder in originals completed temporary chunks; do
       mkdir -p "/uploads/$folder"
       chmod 700 "/uploads/$folder"
     done