- Add clickable artifact cards with keyboard support
- Create new ArtifactView for displaying file diffs
- Update button styles with solid backgrounds and faster transitions
- Add auto-cleanup of stale diff and plan approval views on startup
- Fix artifact deletion to preserve original file path
Implement comprehensive artifact tracking to record all file modifications made by the AI agent during conversations. Add artifact persistence, garbage collection, and UI updates with new "Discuss" button styling.
Add PlanApprovalService and PlanApprovalView to enable user review
and approval of AI-generated execution plans before execution begins.
Users can approve, reject, or suggest changes to plans through a new
input mode and dedicated view.
