File links do not open in VS Code when connected to the IDE #5423

Description

File links in Copilot CLI responses do not open in VS Code when the CLI is connected to the IDE. Web links open fine.

Ubuntu 26.04
Copilot CLI version 1.0.108-1
Wezterm version 20261108-035604-458a100c

Steps to reproduce

1. Connect Copilot CLI to VS Code.
2. Ask Copilot to link to a workspace file.
3. Click the link in the response.

Expected

The file opens in VS Code.

Actual

The file does not open in VS Code.