Typing fixes

Author: holtskinner

src/a2a/server/agent_execution/context.py

@@ -82,6 +82,8 @@ def context_id(self) -> str | None:
 
     @property
     def configuration(self) -> MessageSendConfiguration | None:
+        if not self._params:
+            return None
         return self._params.configuration
 
     def _check_or_generate_task_id(self) -> None:

src/a2a/server/tasks/task_updater.py

@@ -1,5 +1,7 @@
 import uuid
 
+from typing import Any
+
 from a2a.server.events import EventQueue
 from a2a.types import (
     Artifact,
@@ -42,7 +44,7 @@ def add_artifact(
         parts: list[Part],
         artifact_id=str(uuid.uuid4()),
         name: str | None = None,
-        metadata: dict[str, any] | None = None,
+        metadata: dict[str, Any] | None = None,
     ):
         """Add an artifact to the task."""
         self.event_queue.enqueue_event(