fornax: fix crash-looping coordinator, add UI deployment

- Fix liveness/readiness probe paths from /api/v2/app/version (qBittorrent)
  to /health and /health/ready (Fornax Express server). Pod was restarting
  every ~30s due to probe failures against wrong endpoint.
- Add fornax-ui deployment and service for React dashboard
  (image: fornax/ui:latest, nginx on port 80)
- Split ingress: /api and /health → coordinator:3000, / → ui:80
- Update kustomization to include UI resources

servers/legion/k8s/fornax/ui/deployment.yaml

@@ -0,0 +1,43 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: fornax-ui
+  namespace: media
+  labels:
+    app: fornax-ui
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: fornax-ui
+  template:
+    metadata:
+      labels:
+        app: fornax-ui
+    spec:
+      containers:
+        - name: ui
+          image: registry.neuralplatform.ai/fornax/ui:latest
+          imagePullPolicy: Always
+          ports:
+            - containerPort: 80
+              name: http
+          resources:
+            requests:
+              cpu: 10m
+              memory: 32Mi
+            limits:
+              cpu: 100m
+              memory: 128Mi
+          livenessProbe:
+            httpGet:
+              path: /
+              port: http
+            initialDelaySeconds: 5
+            periodSeconds: 30
+          readinessProbe:
+            httpGet:
+              path: /
+              port: http
+            initialDelaySeconds: 3
+            periodSeconds: 10

servers/legion/k8s/fornax/ui/kustomization.yaml

@@ -0,0 +1,5 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - deployment.yaml
+  - service.yaml

servers/legion/k8s/fornax/ui/service.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: fornax-ui
+  namespace: media
+  labels:
+    app: fornax-ui
+spec:
+  selector:
+    app: fornax-ui
+  ports:
+    - name: http
+      port: 80
+      targetPort: 80
+  type: ClusterIP