CASAN/packages/casan-harness/adapters/vscode/extension/README.md

CASAN Governed Chat for VS Code

This extension contributes an explicit @casan GitHub Copilot Chat route. CASAN opens admission before the selected Copilot model is called and finalizes the same trace after streaming completes.

It intentionally does not claim to intercept built-in Copilot chat. Use @casan <prompt> when a CASAN-owned route is required. Claude Code and Codex inside VS Code continue to use their own project lifecycle hooks installed by casan init.

The extension has no runtime dependency beyond the VS Code API and Python 3 required by CASAN.