chore(main): release 0.3.4

[a2a-bot]

🤖 I have created a release beep boop

0.3.4 (2025-09-02)

Features

• Add ServerCallContext into task store operations (#443) (e3e5c4b)
• Add extensions support to TaskUpdater.add_artifact (#436) (598d8a1)

Bug Fixes

• convert auth_required state in proto utils (#444) (ac12f05)
• handle concurrent task completion during cancellation (#449) (f4c9c18)
• Remove logger error from init on rest_adapter and jsonrpc_app (#439) (9193208)
• resolve streaming endpoint deadlock by pre-consuming request body (#426) (4186731)
• Sync jsonrpc and rest implementation of authenticated agent card (#441) (9da9ecc)

Performance Improvements

• Improve performance and code style for proto_utils.py (#452) (1e4b574)

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This PR was generated with Release Please. See documentation.

[gemini-code-assist]

Summary of Changes

Hello @a2a-bot, 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 automated release PR updates the project to version 0.3.4, primarily to deploy a crucial bug fix that prevents deadlocks in streaming endpoints by ensuring the request body is consumed proactively.

Highlights

• Automated Release: This pull request automates the release of version 0.3.4, incorporating a critical bug fix.
• Bug Fix: Streaming Endpoint Deadlock: A deadlock issue in streaming endpoints has been resolved by pre-consuming the request body, addressing issue #426.

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[gemini-code-assist]

Code Review

This is an automated release pull request for version 0.3.4. The change updates the CHANGELOG.md file with the details of this new release. The formatting is consistent with the existing entries in the file. The changes look correct and ready for merge.

[a2a-bot]

🤖 Created releases:

• v0.3.4

🌻