v1.1.39: Fix Copilot Plugin Headers Issue

Release Date: January 28, 2026

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One-Line Summary

This update fixes the headers setting issue when the Copilot plugin uses the new Messages API.

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Bug Fix: Copilot Plugin Headers Setting

Previous Issue

When the Copilot plugin used the new Messages API, headers settings might be incorrect, causing some requests to fail.

Current Status

Fixed this issue. The Copilot plugin now correctly sets headers for the new Messages API, ensuring all requests work properly.

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Should You Upgrade?

Situation	Recommendation
Using Copilot plugin	✅ Recommended upgrade
Everything working fine	Can wait for next time

Upgrade command:

opencode upgrade

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Technical Details (Skippable)

Click to expand full update list

Core

• Ensure Copilot plugin properly sets headers for new messages API

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