feat: deploy the Approvisionnement facade

The adapter runs in the agents namespace with the other agents, not with n8n:
what it is, is an agent, and the workflow behind it is an implementation detail
its callers never see.

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

deploy/agents/kustomization.yaml

@@ -0,0 +1,4 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - approvisionnement.yaml