Use picked weight for Giant quantity basis

enrich_costco.py

@@ -199,6 +199,7 @@ def parse_costco_item(order_id, order_date, raw_path, line_no, item):
         size_unit,
         pack_qty,
         measure_type,
+        "",
     )
     identity_key, normalization_basis = normalization_identity(
         {

enrich_giant.py

@@ -344,10 +344,11 @@ def derive_prices(item, measure_type, size_value="", size_unit="", pack_qty=""):
     return price_per_each, price_per_lb, price_per_oz
 
 
-def derive_normalized_quantity(qty, size_value, size_unit, pack_qty, measure_type):
+def derive_normalized_quantity(qty, size_value, size_unit, pack_qty, measure_type, picked_weight=""):
     parsed_qty = to_decimal(qty)
     parsed_size = to_decimal(size_value)
     parsed_pack = to_decimal(pack_qty)
+    parsed_picked_weight = to_decimal(picked_weight)
     total_multiplier = None
     if parsed_qty not in (None, Decimal("0")):
         total_multiplier = parsed_qty * (parsed_pack or Decimal("1"))
@@ -358,6 +359,8 @@ def derive_normalized_quantity(qty, size_value, size_unit, pack_qty, measure_typ
         and total_multiplier not in (None, Decimal("0"))
     ):
         return format_decimal(parsed_size * total_multiplier), size_unit
+    if measure_type == "weight" and parsed_picked_weight not in (None, Decimal("0")):
+        return format_decimal(parsed_picked_weight), "lb"
     if measure_type == "count" and total_multiplier not in (None, Decimal("0")):
         return format_decimal(total_multiplier), "count"
     if measure_type == "each" and parsed_qty not in (None, Decimal("0")):
@@ -441,6 +444,7 @@ def parse_item(order_id, order_date, raw_path, line_no, item):
         size_unit,
         pack_qty,
         measure_type,
+        item.get("totalPickedWeight"),
     )
     identity_key, normalization_basis = normalization_identity(
         {

tests/test_enrich_giant.py

@@ -129,6 +129,63 @@ class EnrichGiantTests(unittest.TestCase):
             ("2", "each"),
             enrich_giant.derive_normalized_quantity("2", "", "", "", "each"),
         )
+        self.assertEqual(
+            ("1.68", "lb"),
+            enrich_giant.derive_normalized_quantity("1", "", "", "", "weight", "1.68"),
+        )
+
+    def test_parse_item_uses_picked_weight_for_loose_weight_items(self):
+        banana = enrich_giant.parse_item(
+            order_id="abc123",
+            order_date="2026-03-01",
+            raw_path=Path("raw/abc123.json"),
+            line_no=1,
+            item={
+                "podId": 1,
+                "shipQy": 1,
+                "totalPickedWeight": 1.68,
+                "unitPrice": 0.99,
+                "itemName": "FRESH BANANA",
+                "lbEachCd": "LB",
+                "groceryAmount": 0.99,
+                "primUpcCd": "111",
+                "mvpSavings": 0,
+                "rewardSavings": 0,
+                "couponSavings": 0,
+                "couponPrice": 0,
+                "categoryId": "1",
+                "categoryDesc": "Grocery",
+            },
+        )
+
+        self.assertEqual("weight", banana["measure_type"])
+        self.assertEqual("1.68", banana["normalized_quantity"])
+        self.assertEqual("lb", banana["normalized_quantity_unit"])
+
+        patty = enrich_giant.parse_item(
+            order_id="abc123",
+            order_date="2026-03-01",
+            raw_path=Path("raw/abc123.json"),
+            line_no=2,
+            item={
+                "podId": 2,
+                "shipQy": 1,
+                "totalPickedWeight": 1.29,
+                "unitPrice": 10.05,
+                "itemName": "80% PATTIES PK12",
+                "lbEachCd": "LB",
+                "groceryAmount": 10.05,
+                "primUpcCd": "222",
+                "mvpSavings": 0,
+                "rewardSavings": 0,
+                "couponSavings": 0,
+                "couponPrice": 0,
+                "categoryId": "1",
+                "categoryDesc": "Grocery",
+            },
+        )
+        self.assertEqual("1.29", patty["normalized_quantity"])
+        self.assertEqual("lb", patty["normalized_quantity_unit"])
 
     def test_build_items_enriched_reads_raw_order_files_and_writes_csv(self):
         with tempfile.TemporaryDirectory() as tmpdir: