fix manager loop: pending wake + move sleep into Empty arm only

hive-ag3nt/src/bin/hive-m1nd.rs

@@ -134,8 +134,18 @@ async fn serve(
                 let outcome = turn::drive_turn(&prompt, files, &bus).await;
                 turn::emit_turn_end(&bus, &outcome);
                 bus.set_state(TurnState::Idle);
+                // Check for messages that arrived during the turn and loop
+                // immediately if any are waiting — mirrors hive-ag3nt behaviour.
+                let pending = inbox_unread(socket).await;
+                if pending > 0 {
+                    tracing::info!(%pending, "pending messages after turn; fetching next");
+                    continue;
+                }
+            }
+            Ok(ManagerResponse::Empty) => {
+                // Idle: sleep briefly before next long-poll attempt.
+                tokio::time::sleep(interval).await;
             }
-            Ok(ManagerResponse::Empty) => {}
             Ok(
                 ManagerResponse::Ok
                 | ManagerResponse::Status { .. }
@@ -151,7 +161,6 @@ async fn serve(
                 tracing::warn!(error = ?e, "recv failed; retrying");
             }
         }
-        tokio::time::sleep(interval).await;
     }
 }