--- type: Added pr: 2205 --- **GSD is now installable on pi** — `npx @opengsd/gsd-core --pi` installs the GSD extension to `~/.pi/agent/extensions/gsd.cjs`, and `/gsd ` now dispatches real commands through the embedded engine (the reference binding previously could only run `query help`). Drives pi through the negotiated imperative Host-Integration adapter, with active-model steering and the full pi lifecycle-event surface. (#2102)