agent loop: claude drives; tool envelope (log/run/status/log)

hive-c0re/src/agent_server.rs

@@ -101,5 +101,11 @@ fn dispatch(req: &AgentRequest, agent: &str, broker: &Broker) -> AgentResponse {
                 message: format!("{e:#}"),
             },
         },
+        AgentRequest::Status => match broker.count_pending(agent) {
+            Ok(unread) => AgentResponse::Status { unread },
+            Err(e) => AgentResponse::Err {
+                message: format!("{e:#}"),
+            },
+        },
     }
 }