feat(boss): Chief of Staff Boss + spun-crow registry with cap (#42)

nestapi.go

@@ -39,7 +39,7 @@ Then, on the next line, your message text.`
 
 // serviceRoles are addressable in a nest but never members: they only act when
 // a crow's or the owner's message asks them to.
-var serviceRoles = []string{"Elder", "Quill"}
+var serviceRoles = []string{"Elder", "Quill", "Boss"}
 
 // nestMembers lists who may be addressed in a nest: its crows, the owner, and
 // the service roles.
@@ -270,6 +270,8 @@ func (s *Server) triggerResponse(nest Nest, record Message) {
 			go s.respondElder(nest, record)
 		case record.To == "Quill":
 			go s.respondQuill(nest, record)
+		case record.To == "Boss":
+			go s.respondBoss(nest, record)
 		case slices.Contains(nest.Crows, record.To):
 			go s.respondToRequest(nest, record)
 		default: