docs: Add Hector to A2A Protocol Integrations

[kadirpekel]

This PR adds Hector to the A2A integrations list. Hector is a pure A2A-native declarative AI agent platform written in Go that enables building powerful agents through YAML configuration alone, with zero code required. Unlike other frameworks that retrofit A2A support, Hector is built from the ground up on the A2A protocol specification, providing 100% compliance with agent discovery, task execution, streaming (SSE), and session management. Its unique value proposition is seamless integration of external A2A agents via simple YAML configuration (type: "a2a", url: "https://agent-url"), enabling true multi-agent orchestration across heterogeneous systems and demonstrating the full potential of A2A interoperability.

Homepage: https://gohector.dev
Repository: https://github.com/kadirpekel/hector

Would love to see Hector to the A2A integrations list if you also agree. I believe it demonstrates the protocol's potential for true agent interoperability.

[gemini-code-assist]

Summary of Changes

Hello @kadirpekel, 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 expands the community documentation by including Hector in the list of A2A protocol integrations. Hector is presented as a declarative AI agent platform built specifically for the A2A protocol, emphasizing its compliance and ability to facilitate multi-agent orchestration via YAML configuration. The addition aims to showcase the protocol's potential for true agent interoperability.

Highlights

• New A2A Integration: Added "Hector," a pure A2A-native declarative AI agent platform, to the list of A2A protocol integrations in the community documentation.

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[gemini-code-assist]

Code Review

This pull request adds 'Hector' to the list of A2A protocol integrations in the community documentation. The change is a welcome addition. I have one minor suggestion to maintain the alphabetical order of the list for better readability and consistency.