- New "Terminals" tab in ArtifactsPanel showing active terminal sessions
- List view: name, description, status badge (busy/idle/closed)
- Detail view on click: PID, command, CWD, uptime, background flag, live output
- chat.js: capture terminal metadata from tool_start and tool_call events
- Merge terminal metadata (open/status/list/close) into reactive terminals store
- Vue reactivity: immutable updates for terminals map
- Build webclient and verify all backend tests pass

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>