fix: Tests that use pushNotificationConfig for MessageSendConfiguration

[kabir]

Rename push_notification to push_notification_config in grpc (Update to incorporate a2aproject/A2A#1092)

Fixes: #84

[gemini-code-assist]

Summary of Changes

Hello @kabir, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses a minor naming convention update in the A2A protocol buffer definition while also significantly enhancing the Test Compatibility Kit (TCK) for the tasks/list endpoint. It ensures robust testing across all supported transports, documents a critical specification omission for JSON-RPC, and sets up project-specific configurations for the Serena development tool.

Highlights

• Protocol Buffer Field Renaming: The push_notification field within the SendMessageConfiguration message in a2a.proto has been renamed to push_notification_config for clarity and consistency.
• Protobuf and gRPC Stub Updates: The Python Protobuf version used for generating gRPC stubs has been upgraded from 5.29.3 to 6.31.1, and the GRPC_GENERATED_VERSION in the gRPC stub file has been updated accordingly.
• Comprehensive TCK for tasks/list Endpoint: Extensive Test Compatibility Kit (TCK) tests have been implemented for the tasks/list endpoint across JSON-RPC, gRPC, and REST transports. This includes client-side fixes for these transports and detailed identification of remaining issues in the a2a-java implementation.
• Documentation of JSON-RPC tasks/list Spec Gap: A new document (SPEC_ISSUE_tasks_list_jsonrpc.md) has been added to formally describe the specification gap where the tasks/list method was missing from the JSON-RPC transport definition in A2A v0.3.0, proposing its inclusion.
• Serena Project Configuration Added: New configuration files for the Serena development environment have been added, including a .gitignore entry for cache files and a project.yml file specifying Python language support and other project settings.

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[kabir]

/gemini review

[gemini-code-assist]

Code Review

This pull request refactors the SendMessageConfiguration message in a2a.proto by renaming the push_notification field to push_notification_config. This change improves consistency with the field's type, PushNotificationConfig, and aligns the protobuf definition with the existing specification and JSON schema. The corresponding generated Python stubs for protobuf and gRPC have been correctly updated to reflect this change. The changes are correct and improve the codebase's consistency.

[kabir]

/gemini review

[gemini-code-assist]

Code Review

This pull request correctly renames the push_notification field to push_notification_config in the protobuf definition and updates the corresponding client implementations. The addition of new tests to verify that SendMessageConfiguration is properly handled in both blocking and streaming message sends is a great improvement and directly addresses the related issue.

My main feedback is focused on improving code maintainability by refactoring a significant block of duplicated code in tck/transport/grpc_client.py. Consolidating this logic will make the code cleaner and easier to manage in the future.