ghost-en: stage Infisical-backed SMTP secret (3a)

InfisicalStaticSecret syncs shared /smtp-gmail -> ghost-en-smtp-infisical
(parallel name, passthrough SMTP_USER/SMTP_PASS). Old secret stays live until 3c.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

ghost-en/infisical-ghost-en-smtp.yaml

@@ -0,0 +1,25 @@
+apiVersion: secrets.infisical.com/v1beta1
+kind: InfisicalStaticSecret
+metadata:
+  name: ghost-en-smtp
+  namespace: ghost-en
+spec:
+  # Shared, read-only machine identity (no write grant, no PushSecret).
+  # Source is the SHARED /smtp-gmail folder (same Gmail sender account used by
+  # both blogs); zona-exclusion references the same path with a key remap.
+  infisicalAuthRef:
+    name: infisical-auth
+    namespace: infisical-operator
+  sources:
+    - projectId: 17e98e9d-70f5-43d1-8382-7da818dfcdd0   # project "homelab"
+      environmentSlug: prod
+      secretPath: /smtp-gmail
+  syncOptions:
+    refreshInterval: 60s
+  targets:
+    - kind: Secret
+      name: ghost-en-smtp-infisical      # parallel name — old secret stays live until 3c
+      namespace: ghost-en
+      creationPolicy: Owner
+      # key passthrough: synced Secret carries SMTP_USER / SMTP_PASS verbatim
+      # (Infisical key names already match the deployment's secretKeyRef keys).