Copilot CLI v1.0.8: Terminal & Agent Fixes

TL;DR

• Agent mode colors now work on non-truecolor terminals (tmux, SSH, screen)
• Alternate screen buffer enabled by default for cleaner terminal output
• Mouse scroll fixed in macOS Terminal.app and tmux
• Ctrl-C in prompt mode exits immediately instead of waiting for requests

New

• Extension mode setting — control extensibility behavior at the CLI level
• MCP server validation — experimental MCP_ALLOWLIST feature flag validates servers against configured registries
• --resume task ID support — resume accepts task IDs in addition to session IDs for more flexible workflow recovery
• Hook definitions in settings — define hooks in settings.json, settings.local.json, and config.json for better configuration flexibility

Fixed

• Agent mode colors on limited terminals — labels and borders now display correct colors on non-truecolor terminals (tmux, SSH, screen)
• Mouse scroll in macOS Terminal.app — scroll now works correctly in terminals that don't support SGR mouse encoding
• Mouse scroll in tmux — scroll works correctly after returning from an external editor
• Ctrl-C responsiveness — prompt mode now exits immediately on Ctrl-C instead of waiting for the request to complete
• Idle subagents visibility — subagents are hidden from /tasks view after 2 minutes of inactivity to reduce clutter
• Repo-level hooks timing — hooks are loaded only after folder trust is confirmed, not before the trust dialog
• Exit plan mode availability — exit plan mode tool remains available when an extension subprocess joins an active session
• Spinner animation timing — spinner no longer delays visible output from appearing in the timeline
• Dialog title consistency — titles now display consistently inside all dialog boxes

Update with: npm install -g @github/copilot-cli@latest or check the release page for other installation methods.

Source: Copilot CLI