Ignore data/ directory and support city-scoped street name exceptions

.gitignore

@@ -4,3 +4,4 @@ desktop.ini
 osm_cache/
 .claude
 stack.env
+data/

convert-addresses.py

@@ -27,17 +27,38 @@ qgis_functions = importlib.import_module("qgis-functions")
 
 
 def load_exceptions(exceptions_path='/data/exceptions.yml'):
+    """Load street name corrections. Each correction has 'from'/'to', and
+    optionally a 'city' to restrict it to addresses in that city only -
+    otherwise it applies everywhere that street name occurs."""
     path = Path(exceptions_path)
     if not path.exists():
-        return {}
+        return []
     import yaml
     with open(path) as f:
         data = yaml.safe_load(f) or {}
-    return {
+    return [
-        item['from']: item['to']
+        item for item in data.get('corrections', [])
-        for item in data.get('corrections', [])
         if 'from' in item and 'to' in item
-    }
+    ]
+
+
+def apply_street_exceptions(street_names, city_names, exceptions):
+    if not exceptions:
+        return street_names
+    result = []
+    for name, city in zip(street_names, city_names):
+        corrected = name
+        if name is not None:
+            for item in exceptions:
+                if item['from'] != name:
+                    continue
+                scope_city = item.get('city')
+                if scope_city and (city is None or city.upper() != scope_city.upper()):
+                    continue
+                corrected = item['to']
+                break
+        result.append(corrected)
+    return result
 
 
 def process_address_fields(gdf, exceptions):
@@ -103,13 +124,6 @@ def process_address_fields(gdf, exceptions):
         for col, addr in zip(unit_from_column, unit_from_address)
     ]
 
-    # Apply street name exceptions
-    if 'addr:street' in mapping and exceptions:
-        mapping['addr:street'] = [
-            exceptions.get(name, name) if name is not None else None
-            for name in mapping['addr:street']
-        ]
-
     # City
     for field in ['POST_COMM', 'PostalCity', 'CITY', 'Jurisdicti']:
         if field in processed.columns:
@@ -119,6 +133,14 @@ def process_address_fields(gdf, exceptions):
             ]
             break
 
+    # Apply street name exceptions (some are scoped to a specific city)
+    if 'addr:street' in mapping and exceptions:
+        mapping['addr:street'] = apply_street_exceptions(
+            mapping['addr:street'],
+            mapping.get('addr:city', [None] * len(processed)),
+            exceptions,
+        )
+
     # Postcode
     for field in ['POST_CODE', 'ZipCode', 'ZIP', 'POSTAL_CODE']:
         if field in processed.columns: