fix set -e

download.sh

@@ -320,15 +320,15 @@ done
 # Use explicit if-blocks (safe with 'set -e') and avoid short-circuit pitfalls
 count=0
 if [[ -n $collection ]]; then
-  ((count++))
+  ((++count))
   log "Count++ via collection"
 fi
 if [[ -n $post ]]; then
-  ((count++))
+  ((++count))
   log "Count++ via post"
 fi
 if [[ -n $file ]]; then
-  ((count++))
+  ((++count))
   log "Count++ via file"
 fi
 
@@ -351,3 +351,4 @@ fi
 
 # cleanup happens via trap
 exit 0
+