add VCR decorators to FileSearchTool integration tests

Tests will record HTTP interactions to cassettes on first run with API keys, then replay them in CI without needing keys.

Author: gorkachea

tests/models/test_google.py

@@ -3203,6 +3203,7 @@ def _generate_response_with_texts(response_id: str, texts: list[str]) -> Generat
     )
 
 
+@pytest.mark.vcr()
 async def test_google_model_file_search_tool(allow_model_requests: None, google_provider: GoogleProvider):
     """Integration test for FileSearchTool with Google."""
     from pydantic_ai.builtin_tools import FileSearchTool
@@ -3243,6 +3244,7 @@ async def test_google_model_file_search_tool(allow_model_requests: None, google_
             await client.aio.file_search_stores.delete(name=store.name)
 
 
+@pytest.mark.vcr()
 async def test_google_model_file_search_tool_stream(allow_model_requests: None, google_provider: GoogleProvider):
     """Integration test for FileSearchTool streaming with Google."""
     from pydantic_ai.builtin_tools import FileSearchTool

tests/models/test_openai_responses.py

@@ -7436,6 +7436,7 @@ def get_meaning_of_life() -> int:
     )
 
 
+@pytest.mark.vcr()
 async def test_openai_responses_model_file_search_tool(allow_model_requests: None, openai_api_key: str):
     """Integration test for FileSearchTool with OpenAI."""
     from openai import AsyncOpenAI
@@ -7477,6 +7478,7 @@ async def test_openai_responses_model_file_search_tool(allow_model_requests: Non
         await async_client.close()
 
 
+@pytest.mark.vcr()
 async def test_openai_responses_model_file_search_tool_stream(allow_model_requests: None, openai_api_key: str):
     """Integration test for FileSearchTool streaming with OpenAI."""
     from openai import AsyncOpenAI