add listener routes for internal service proxying (#793)

docs/source/resources/includes/plano_config_full_reference.yaml

@@ -55,6 +55,10 @@ listeners:
     port: 8001
     router: plano_orchestrator_v1
     address: 0.0.0.0
+    # Routes forward path-prefix traffic to internal services (e.g., Jaeger UI)
+    routes:
+      - path_prefix: /traces
+        upstream: http://jaeger:16686
     agents:
       - id: rag_agent
         description: virtual assistant for retrieval augmented generation tasks

docs/source/resources/includes/plano_config_full_reference_rendered.yaml

@@ -19,6 +19,10 @@ endpoints:
   mistral_local:
     endpoint: 127.0.0.1
     port: 8001
+  route_travel_booking_service_traces:
+    endpoint: jaeger
+    port: 16686
+    protocol: http
   weather_agent:
     endpoint: host.docker.internal
     port: 10510
@@ -36,6 +40,10 @@ listeners:
   name: travel_booking_service
   port: 8001
   router: plano_orchestrator_v1
+  routes:
+  - cluster_name: route_travel_booking_service_traces
+    path_prefix: /traces
+    upstream: http://jaeger:16686
   type: agent
 - address: 0.0.0.0
   model_providers: