Fix pyright type checking errors in tests

- Add explicit list[ModelMessage] type annotations in test_instrumented.py
- Fix pyright ignore comment placement in test_openai.py
- Remove unnecessary type ignore comments

Fixes CI pyright errors reported on Python 3.10

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

Co-Authored-By: Claude <[email protected]>

Author: ronakrm

tests/models/test_instrumented.py

@@ -1643,7 +1643,7 @@ def test_cache_point_in_user_prompt():
     )
 
     # Test with multiple CachePoints
-    messages_multi = [
+    messages_multi: list[ModelMessage] = [
         ModelRequest(
             parts=[
                 UserPromptPart(content=['first', CachePoint(), 'second', CachePoint(), 'third']),
@@ -1664,7 +1664,7 @@ def test_cache_point_in_user_prompt():
     )
 
     # Test with CachePoint mixed with other content types
-    messages_mixed = [
+    messages_mixed: list[ModelMessage] = [
         ModelRequest(
             parts=[
                 UserPromptPart(

tests/models/test_openai.py

@@ -3076,12 +3076,12 @@ async def test_cache_point_filtering(allow_model_requests: None):
 async def test_cache_point_filtering_responses_model():
     """Test that CachePoint is filtered out in OpenAI Responses API requests."""
     # Test the static method directly to trigger line 1680
-    msg = await OpenAIResponsesModel._map_user_prompt(
+    msg = await OpenAIResponsesModel._map_user_prompt(  # pyright: ignore[reportPrivateUsage]
         UserPromptPart(content=['text before', CachePoint(), 'text after'])
-    )  # pyright: ignore[reportPrivateUsage]
+    )
 
     # CachePoint should be filtered out, only text content should remain
     assert msg['role'] == 'user'
-    assert len(msg['content']) == 2  # type: ignore[reportUnknownArgumentType]
+    assert len(msg['content']) == 2
     assert msg['content'][0]['text'] == 'text before'  # type: ignore[reportUnknownArgumentType]
     assert msg['content'][1]['text'] == 'text after'  # type: ignore[reportUnknownArgumentType]