chore: temporary freeze A2A repo ref in buf

[ishymko]

To resolve existing merge issues first.

TBD: It should be pinned to some tag either way or better buf invocation shouldn't happen during the build as proto changes do not happen that often and can be maintained manually

[gemini-code-assist]

Summary of Changes

Hello @ishymko, 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 temporarily freezes the reference for the A2A repository within the buf.gen.yaml configuration. This action is taken to address and resolve existing merge issues by pinning the dependency to a specific release candidate version, thereby preventing unforeseen changes from the main branch from affecting the current build process.

Highlights

• Buf Configuration Update: The reference for the a2aproject/A2A.git repository in buf.gen.yaml has been updated from main to v1.0.0-rc.

Changelog

• buf.gen.yaml
  • Updated the ref for the a2aproject/A2A.git input from main to v1.0.0-rc.

Activity

• No specific activity (comments, reviews, or progress updates) has been recorded for this pull request yet.

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[gemini-code-assist]

Code Review

This pull request temporarily freezes the A2A repository reference in buf.gen.yaml to v1.0.0-rc to help resolve merge issues. The change is straightforward and makes sense given the context. I've added one minor suggestion to include a TODO comment to ensure this temporary change is reverted in the future.

[gemini-code-assist]

Since this is a temporary freeze as mentioned in the PR title, it would be beneficial to add a TODO comment to remind developers to revert this change once the merge issues are resolved. This will help prevent this temporary pin from becoming permanent by mistake.

    # TODO: Unfreeze this ref and point back to main once merge issues are resolved.
    ref: v1.0.0-rc