Name the Kubernetes objects in English

catalogue-agent and approvisionnement-agent named a Deployment, a Service, an
Ingress and a Certificate in French, in an estate where nothing else is.

The peer URLs move with them, set through the existing per-environment override
so the rename takes effect without rebuilding an image; the defaults in the code
carry the same values for the next build.

The Keycloak client ids, the image names and the repository names are still
French. They are a separate, heavier move.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

k8s/externalsecret.yaml

@@ -8,7 +8,7 @@
 apiVersion: external-secrets.io/v1
 kind: ExternalSecret
 metadata:
-  name: catalogue-agent-secrets
+  name: catalog-agent-secrets
   namespace: agents
 spec:
   refreshInterval: 1h
@@ -16,7 +16,7 @@ spec:
     kind: ClusterSecretStore
     name: vault-keycloak
   target:
-    name: catalogue-agent-secrets
+    name: catalog-agent-secrets
   data:
     - secretKey: CATALOGUE_CLIENT_SECRET
       remoteRef: