Fix MEV backend and token-aggregation deployment wiring

scripts/deploy-token-aggregation-for-publication.sh

@@ -115,6 +115,28 @@ try {
 } catch (_) {
   process.exit(0);
 }
+
+derive_repo_example_env_value() {
+  local env_key="$1"
+  local env_file="$REPO_ROOT/.env.master.example"
+
+  [[ -f "$env_file" ]] || return 0
+
+  node - <<'NODE' "$env_file" "$env_key"
+const fs = require('fs');
+const file = process.argv[2];
+const key = process.argv[3];
+try {
+  const line = fs
+    .readFileSync(file, 'utf8')
+    .split(/\r?\n/)
+    .find((entry) => entry.startsWith(`${key}=`));
+  if (!line) process.exit(0);
+  const value = line.slice(key.length + 1).trim();
+  if (value) process.stdout.write(value);
+} catch (_) {
+  process.exit(0);
+}
 NODE
 }
 
@@ -169,6 +191,9 @@ NODE
         ;;
       CW_MAX_OUTSTANDING_*)
         derived_value="$(derive_gru_transport_policy_amount "$key" || true)"
+        if [[ -z "$derived_value" ]]; then
+          derived_value="$(derive_repo_example_env_value "$key" || true)"
+        fi
         value="${!key:-$derived_value}"
         ;;
       CW_GAS_OUTSTANDING_*|CW_GAS_ESCROWED_*|CW_GAS_TREASURY_BACKED_*|CW_GAS_TREASURY_CAP_*)