chore: operator env example and deployment script touch-ups

Made-with: Cursor

scripts/load-env.sh

@@ -14,6 +14,15 @@ if [[ -f "$ENV_FILE" ]]; then
   set -a
   source "$ENV_FILE"
   set +a
+  SECURE_SECRETS_FILE="${SECURE_SECRETS_FILE:-$HOME/.secure-secrets/private-keys.env}"
+  if [[ -f "$SECURE_SECRETS_FILE" ]]; then
+    set -a
+    source "$SECURE_SECRETS_FILE"
+    set +a
+  fi
+  if [[ -z "${PRIVATE_KEY:-}" && -n "${DEPLOYER_PRIVATE_KEY:-}" ]]; then
+    export PRIVATE_KEY="$DEPLOYER_PRIVATE_KEY"
+  fi
   echo "Loaded: $ENV_FILE"
 else
   echo "WARN: $ENV_FILE not found" >&2