AI/Infra: Integrate Stockfish 16.1 NNUE evaluation improvements

[chinweobtagaz]

Description

Stockfish 16.1 introduces significant improvements to NNUE evaluation, resulting in stronger play and better positional understanding.

What Needs to be Done

• Upgrade the core engine binaries on all worker nodes.
• Ensure the new .nnue network files are properly bundled and loaded.
• Verify compatibility with the existing UCI communication wrapper.

Acceptance Criteria

• Worker nodes successfully boot and report Stockfish 16.1.
• No regression in UCI parsing or communication logic.
• Evaluation metrics align with the updated 16.1 baselines.

[mysterio123865]

@mysterio123865 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hii I will like to work on this I will implement high quality solution to this and a well tested code for easy merging pls kindly assign

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[m-hajjo]

@m-hajjo has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I am a software engineer and an open source contributor. I would like to work on this issue please

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Congratulations, @m-hajjo! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

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This issue has been completed by @m-hajjo as part of the Stellar Wave Program's 7th Wave 🥳

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