chore: fix pyright errors to make pipeline green

src/streamer/localize/localize.py

@@ -1,4 +1,4 @@
-from typing import Optional
+
 from streamer.parse.shard import Shard, StreamFile
 
 from .repostory_configuration import RepositoryConfiguration
@@ -10,7 +10,7 @@ def localize_shard(
     shard: Shard, config: RepositoryConfiguration, propagated: dict[str, str]
 ) -> LocalizedShard:
     position = {**propagated}
-    private_position = {}
+    private_position: dict[str, str] = {}
 
     for marker in shard.markers:
         normalized_marker = marker.lower()
@@ -25,7 +25,7 @@ def localize_shard(
 
     children = [localize_shard(child, config, position) for child in shard.children]
 
-    (position.update(private_position),)
+    position.update(private_position)
 
     return LocalizedShard(
         **shard.model_dump(exclude={"children"}), location=position, children=children
@@ -34,9 +34,12 @@ def localize_shard(
 
 def localize_stream_file(
     stream_file: StreamFile, config: RepositoryConfiguration
-) -> Optional[LocalizedShard]:
+) -> LocalizedShard | None:
     shard_date = extract_date_from_file_name(stream_file.filename)
 
+    if not shard_date or not stream_file.shard:
+        raise ValueError("Could not extract date")
+
     return localize_shard(stream_file.shard, config, {"moment": shard_date.isoformat()})