Sessions MCP server — manages Claude session docs (briefs, projects, ideas, session registry). SQLite-backed via carapace-sessions shared access layer. Source: ~/working/carapace/packages/sessions-mcp/ (editable install in ~/.virtualenvs/carapace/). Service unit: /etc/systemd/system/sessions_mcp.service. Deploy: git pull + sudo systemctl restart sessions_mcp.service. Logs: journalctl -u sessions_mcp.service.