operator input: per-agent /send form (dashboard T4LK removed)

hive-c0re/src/agent_server.rs

@@ -107,5 +107,15 @@ fn dispatch(req: &AgentRequest, agent: &str, broker: &Broker) -> AgentResponse {
                 message: format!("{e:#}"),
             },
         },
+        AgentRequest::OperatorMsg { body } => match broker.send(&Message {
+            from: "operator".to_owned(),
+            to: agent.to_owned(),
+            body: body.clone(),
+        }) {
+            Ok(()) => AgentResponse::Ok,
+            Err(e) => AgentResponse::Err {
+                message: format!("{e:#}"),
+            },
+        },
     }
 }