Copilot CLI 1.0.64 and 1.0.65 on VSCode terminal ignores user theme and defaults to light theme.

[100-a1]

Describe the bug

Since the Copilot CLI 1.0.64 release, the VSCode terminal no longer respects the user's theme and defaults to a light theme instead.

I have tested this with both Dark and Solarized themes; however, the Copilot CLI terminal always displays the light theme regardless of the active setting.

Affected version

Github Copilot CLI 1.0.64, Github Copilot CLI 1.0.65

Steps to reproduce the behavior

1. Run copilot within a VSCode terminal.
2. If you are using a VSCode theme different than light, the copilot cli will change terminal theme to light, ignoring user's theme.

Expected behavior

Copilot CLI respects user's theme as of version 1.0.63.

Additional context

• Operating System: Windows 11 25H2
• Shell: bash
• Terminal emulator: VSCode 1.126.0 - devcontainer alpine linux 3.22.2
• CPU Arch: X86_64
• Binary: github-copilot-1.0.65-linuxmusl-x64.tgz