fix: health check endpoint (#4522)

lib/runtime/src/pipeline/network/ingress/http_endpoint.rs

@@ -85,13 +85,15 @@ impl SharedHttpServer {
             notify: Arc::new(Notify::new()),
         });
 
-        // Set health status
+        // Insert handler FIRST to ensure it's ready to receive requests
+        let subject_clone = subject.clone();
+        self.handlers.insert(subject, handler);
+
+        // THEN set health status to Ready (after handler is registered and ready)
         system_health
             .lock()
             .set_endpoint_health_status(&endpoint_name, HealthStatus::Ready);
 
-        let subject_clone = subject.clone();
-        self.handlers.insert(subject, handler);
         tracing::debug!("Registered endpoint handler for subject: {}", subject_clone);
         Ok(())
     }

lib/runtime/src/pipeline/network/ingress/shared_tcp_endpoint.rs

@@ -77,13 +77,19 @@ impl SharedTcpServer {
             namespace,
             component_name,
             endpoint_name: endpoint_name.clone(),
-            system_health,
+            system_health: system_health.clone(),
             inflight: Arc::new(AtomicU64::new(0)),
             notify: Arc::new(Notify::new()),
         });
 
+        // Insert handler FIRST to ensure it's ready to receive requests
         self.handlers.insert(endpoint_path, handler);
 
+        // THEN set health status to Ready (after handler is registered and ready)
+        system_health
+            .lock()
+            .set_endpoint_health_status(&endpoint_name, crate::HealthStatus::Ready);
+
         tracing::info!(
             "Registered endpoint '{}' with shared TCP server on {}",
             endpoint_name,