Wire GCS backup to neuron-db-backup-prod bucket (neuron-494301)

Bucket created, SA key stored in Vault at secret/gcs.
CronJob ExternalSecret updated to pull from secret/gcs.
Hourly restic backup now runs to both R2 and GCS.

servers/legion/k8s/neuron-technologies/prod/backup-cronjob.yaml

@@ -23,8 +23,8 @@ spec:
         # ── GCS (secondary) ──
         RESTIC_PASSWORD_GCS: "{{ .restic_password_gcs }}"
         GCS_SA_KEY_JSON: "{{ .gcs_neuron_backup_sa_key }}"
-        GOOGLE_PROJECT_ID: "neuron-785695"
-        RESTIC_REPOSITORY_GCS: "gs:neuron-backup-neuron-785695:/"
+        GOOGLE_PROJECT_ID: "neuron-494301"
+        RESTIC_REPOSITORY_GCS: "gs:neuron-db-backup-prod:/"
   data:
     - secretKey: restic_password
       remoteRef:
@@ -59,7 +59,7 @@ spec:
   schedule: "0 * * * *"
   concurrencyPolicy: Forbid
   failedJobsHistoryLimit: 3
-  successfulJobsHisticsLimit: 3
+  successfulJobsHistoryLimit: 3
   jobTemplate:
     spec:
       backoffLimit: 2