config: env-based service URIs via ConfigMap (prod: SOPS-encrypted)

- config.yaml: prod config with cluster-internal DNS (LLM, OpenSearch, Authentik, Temporal, API-GW)
- config.local.yaml: dev config with external URLs via ingress
- deployment.yaml: remove hardcoded URIs, read all from ConfigMap envFrom
- All downstream service URIs now configurable per environment
- Production config encrypted with SOPS (Age-based)
- Application code reads LLM_ENDPOINT, OPENSEARCH_HOST, AUTHENTIK_ISSUER, etc. from ENV
- Simplifies prod/dev switching: just swap ConfigMap, no code changes

k8s/app/kustomization.yaml

@@ -1,13 +1,12 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 namespace: poimen
+
 resources:
-  # vault-pvc.yaml removed — memory service uses pgvector, not local storage
   - deployment.yaml
   - service.yaml
-  - config.yaml
-  # obsidian.yaml retired — reference docs now via memory graph
-  # Legacy secret managed separately
-  # - secrets.yaml
+  - config.yaml        # Production config (SOPS-encrypted)
+  # config.local.yaml  # Optional: plaintext local/dev overrides
+
 generators:
   - secret-generator.yaml