feat(v1.81.0-stable-agentcore): major release with agent-to-agent protocol, lazy imports, and comprehensive feature expansion#8

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busla wants to merge 7 commits intomainfrom

apro/v1.81.0-stable-agentcore

Commits on Jan 21, 2026

[Fix] LiteLLM VertexAI Pass through - ensuring incoming headers are forwarded down to target (#19524)
ishaan-jaff
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Commits on Jan 22, 2026

[Fix] VertexAI Pass through - Ensure only anthropic betas are forwarded down to LLM API (#19542)
ishaan-jaff
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Commits on Jan 24, 2026

Commits on Feb 5, 2026

chore: commit save point
busla
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Commits on Feb 6, 2026