Fix: Ensure all skills are tracked as files, not submodules

skills/loki-mode/benchmarks/results/2026-01-05-00-49-17/humaneval-solutions/128.py

@@ -0,0 +1,25 @@
+def prod_signs(arr):
+    """
+    You are given an array arr of integers and you need to return
+    sum of magnitudes of integers multiplied by product of all signs
+    of each number in the array, represented by 1, -1 or 0.
+    Note: return None for empty arr.
+
+    Example:
+    >>> prod_signs([1, 2, 2, -4]) == -9
+    >>> prod_signs([0, 1]) == 0
+    >>> prod_signs([]) == None
+    """
+    if not arr:
+        return None
+    
+    sum_magnitudes = sum(abs(x) for x in arr)
+    
+    sign_product = 1
+    for x in arr:
+        if x == 0:
+            return 0
+        elif x < 0:
+            sign_product *= -1
+    
+    return sum_magnitudes * sign_product