Fix: Same-building detection using correct API field names

The same-building detection was failing because the code was accessing
deal.street_name and deal.house_number (Pydantic model field names),
but the Govmap API actually returns streetNameHeb/streetNameEng and
houseNum as extra fields.

Modified address construction to check multiple field names using
getattr() to handle the API's actual field names, falling back to
model field names if needed.

This fix ensures same-building deals are correctly identified and
prioritized with priority=0.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

nadlan_mcp/govmap/client.py

@@ -718,9 +718,17 @@ class GovmapClient:
                             deal.distance_meters = round(deal_distance, 1)
 
                             # Check if this is from the same building
-                            # Construct address from model fields
-                            street = deal.street_name or ""
-                            house_num = str(deal.house_number or "")
+                            # Construct address from model fields (try multiple field names)
+                            # API returns streetNameHeb/streetNameEng and houseNum
+                            street = (
+                                getattr(deal, "streetNameHeb", None)
+                                or getattr(deal, "streetNameEng", None)
+                                or deal.street_name
+                                or ""
+                            )
+                            house_num = str(
+                                getattr(deal, "houseNum", None) or deal.house_number or ""
+                            )
                             deal_address = f"{street} {house_num}".lower().strip()
                             if self._is_same_building(search_address_normalized, deal_address):
                                 deal.deal_source = "same_building"