forge-link

When you open an issue or change request through the repository's resolved forge, link it to the spec node(s) it serves by adding one line to its body: Spec: <node-id> (comma-separate several). The id is the node's leaf name — the folder under .spec/…/<id>/spec.md, e.g. sessions, never the slash-path. An unrecognized id silently links nothing, so use a real node id (spex graph --json lists them). This is the one linking marker on every forge.