fix(price): skip price check for kit/complex articles

Kit articles (multi-component or cantitate_roa≠1) have expected price
differences between GoMag (commercial) and ROA (component sum).
Skip comparison entirely, mark with kit=True flag for UI badge.

Fix kit detection to use float()!=1 (catches cantitate_roa<1 like 0.5).
Update 3 existing tests + add multi-component kit test.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

api/tests/test_business_rules.py

@@ -539,7 +539,7 @@ class TestGetPricesForOrderCantitateRoa:
     """
 
     def test_cantitate_roa_half_matches(self):
-        """cantitate_roa=0.5: ROA price 14.00 * 0.5 = 7.00 should match GoMag 7.00."""
+        """cantitate_roa=0.5: kit item — price check skipped entirely."""
         items = [{
             "sku": "1057308134545",
             "price": 7.00,
@@ -554,12 +554,12 @@ class TestGetPricesForOrderCantitateRoa:
         conn = _mock_oracle_conn(pol_cu_tva=True, price_map={100: (14.00, 1.19)})
         result = get_prices_for_order(items, {"id_pol": "1"}, conn=conn)
 
-        assert result["items"][0]["match"] is True
-        assert abs(result["items"][0]["pret_roa"] - 7.00) < 0.01
+        assert result["items"][0]["match"] is None
+        assert result["items"][0]["kit"] is True
         assert result["summary"]["mismatches"] == 0
 
     def test_cantitate_roa_half_mismatch(self):
-        """cantitate_roa=0.5: ROA price 10.00 * 0.5 = 5.00 != GoMag 7.00."""
+        """cantitate_roa=0.5: kit item — price check skipped even if prices differ."""
         items = [{
             "sku": "SKU-HALF",
             "price": 7.00,
@@ -574,9 +574,9 @@ class TestGetPricesForOrderCantitateRoa:
         conn = _mock_oracle_conn(pol_cu_tva=True, price_map={200: (10.00, 1.19)})
         result = get_prices_for_order(items, {"id_pol": "1"}, conn=conn)
 
-        assert result["items"][0]["match"] is False
-        assert abs(result["items"][0]["pret_roa"] - 5.00) < 0.01
-        assert result["summary"]["mismatches"] == 1
+        assert result["items"][0]["match"] is None
+        assert result["items"][0]["kit"] is True
+        assert result["summary"]["mismatches"] == 0
 
     def test_cantitate_roa_one_simple_item(self):
         """cantitate_roa=1 (default): simple item, direct price comparison."""
@@ -598,7 +598,7 @@ class TestGetPricesForOrderCantitateRoa:
         assert result["summary"]["mismatches"] == 0
 
     def test_cantitate_roa_gt1_kit(self):
-        """cantitate_roa=2: kit with 2 ROA units per GoMag unit."""
+        """cantitate_roa=2: kit item — price check skipped."""
         items = [{
             "sku": "SKU-KIT2",
             "price": 20.00,
@@ -613,5 +613,24 @@ class TestGetPricesForOrderCantitateRoa:
         conn = _mock_oracle_conn(pol_cu_tva=True, price_map={400: (10.00, 1.19)})
         result = get_prices_for_order(items, {"id_pol": "1"}, conn=conn)
 
-        assert result["items"][0]["match"] is True
-        assert abs(result["items"][0]["pret_roa"] - 20.00) < 0.01
+        assert result["items"][0]["match"] is None
+        assert result["items"][0]["kit"] is True
+        assert result["summary"]["mismatches"] == 0
+
+    def test_multi_component_kit_skipped(self):
+        """Multi-component kit (2 CODMATs): price check skipped, kit=True."""
+        items = [{
+            "sku": "SKU-MULTI",
+            "price": 15.00,
+            "quantity": 1,
+            "codmat_details": [
+                {"codmat": "COMP-A", "cantitate_roa": 1, "id_articol": 500, "cont": "345"},
+                {"codmat": "COMP-B", "cantitate_roa": 1, "id_articol": 501, "cont": "345"},
+            ],
+        }]
+        conn = _mock_oracle_conn(pol_cu_tva=True, price_map={500: (8.00, 1.19), 501: (9.00, 1.19)})
+        result = get_prices_for_order(items, {"id_pol": "1"}, conn=conn)
+
+        assert result["items"][0]["match"] is None
+        assert result["items"][0]["kit"] is True
+        assert result["summary"]["mismatches"] == 0