Improve jsonrpc client to properly route replies

Signed-off-by: Lee Smet <lee.smet@hotmail.com>

src/main.rs

@@ -99,21 +99,21 @@ async fn main() {
     // Shared application state
     let state = Arc::new(herocoordinator::rpc::AppState::new(service));
 
-    // Start router workers (auto-discovered contexts) and a single global inbound listener
+    // Start router workers (auto-discovered contexts) using a single global SupervisorHub (no separate inbound listener)
     {
         let base_url = format!("http://{}:{}", cli.mycelium_ip, cli.mycelium_port);
+        let hub = herocoordinator::clients::SupervisorHub::new(base_url.clone(), "supervisor.rpc".to_string())
+            .expect("Failed to initialize SupervisorHub");
         let cfg = herocoordinator::router::RouterConfig {
             context_ids: Vec::new(), // ignored by start_router_auto
             concurrency: 32,
             base_url,
             topic: "supervisor.rpc".to_string(),
+            sup_hub: hub.clone(),
             transport_poll_interval_secs: 2,
             transport_poll_timeout_secs: 300,
         };
-        // Global inbound listener for supervisor replies via Mycelium popMessage
-        let _inbound_handle =
-            herocoordinator::router::start_inbound_listener(service_for_router.clone(), cfg.clone());
-        // Per-context outbound delivery loops
+        // Per-context outbound delivery loops (replies handled by SupervisorHub)
         let _auto_handle = herocoordinator::router::start_router_auto(service_for_router, cfg);
     }