tl;dr: QM is a multiplayer AI agent harness aimed at startups, giving each employee an isolated workspace (with its own memory, files, sandbox, and permissions) while enabling collaboration via Slack channels, group chats, and shared projects. It's harness-agnostic—swappable between Pi, OpenCode, Codex, and Claude Code—and runs on a TypeScript/Fastify core with Postgres persistence, deployable to the operator's own cloud (Fly or AWS). Security follows local coding agents (agent acts as the user with audited actions), with configurable strict/auto/dangerous postures and a predeclared command approval policy. MIT licensed.