dashboard: /op-send returns 200; client relies on SSE for visual update

hive-c0re/src/dashboard.rs

@@ -1141,7 +1141,13 @@ async fn post_op_send(State(state): State<AppState>, Form(form): Form<OpSendForm
     }) {
         return error_response(&format!("op-send to {to} failed: {e:#}"));
     }
-    Redirect::to("/").into_response()
+    // 200 instead of 303 → the client doesn't refetch /api/state. The
+    // broker `send` already emitted a `MessageEvent` which the
+    // dashboard channel forwarder mirrors as `DashboardEvent::Sent`,
+    // and the page's terminal + inbox derive from that stream — so the
+    // operator's send shows up the same way an agent's send does, with
+    // no full-state refresh in between.
+    (axum::http::StatusCode::OK, "ok").into_response()
 }
 
 async fn post_request_spawn(