Use basedpyright refactor

folkugat_web/model/search.py

@@ -1,4 +1,8 @@
 import dataclasses
+from collections.abc import Iterable
+from typing import Self
+
+NGrams = dict[int, list[str]]
 
 
 @dataclasses.dataclass(order=True)
@@ -7,13 +11,14 @@ class SearchMatch:
     ngram: str
 
     @classmethod
-    def combine_matches(cls, matches):
+    def combine_matches(cls, matches: Iterable[Self]) -> Self:
         ngrams, distances = zip(*((match.ngram, match.distance) for match in matches))
         return cls(
             ngram=', '.join(ngrams),
-            distance=sum(distances)/len(distances)   
+            distance=sum(distances)/len(distances)
         )
 
+
 @dataclasses.dataclass
 class QueryResult:
     id: int