Copilot Chat v0.42.2026032602: CLI & Session Fixes

TL;DR

• Copilot CLI now integrates chat prompt files and skills
• Fixed session ID handling and tool invocation error formatting in CLI
• Patch-based edit window caching corrected

New

• CLI chat prompt file service — Copilot CLI can now load and use prompt files with integrated skills support.
• Environment contribution setting — Moved env contribution configuration to settings for better control.

Fixed

• CLI tool invocation errors — Improved error handling and formatting when tools fail during CLI chat execution.
• Session ID handling — Fixed session ID management in CLI chat commands to prevent state mismatches.
• Cached edit window positioning — Corrected edit window calculation for patch-based cached items.

Update with: code --install-extension GitHub.Copilot-Chat or check for updates in VS Code Extensions.

Source: Copilot Chat