fix: use ExternalName services to reference cross-namespace services (as suggested by copilot)

ai/internal-ingress.yaml

@@ -1,3 +1,21 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: searxng-external
+  namespace: ai
+spec:
+  type: ExternalName
+  externalName: searxng.home-apps.svc.cluster.local
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: jackett-external
+  namespace: ai
+spec:
+  type: ExternalName
+  externalName: jackett.media.svc.cluster.local
+---
 apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
@@ -15,7 +33,7 @@ spec:
         pathType: Prefix
         backend:
           service:
-            name: searxng
+            name: searxng-external
             port:
               number: 8080
   - host: jackett.home-apps
@@ -25,6 +43,6 @@ spec:
         pathType: Prefix
         backend:
           service:
-            name: jackett
+            name: jackett-external
             port:
               number: 80