/** Deployment-time connection overrides for immutable production images. */
export function productionConnections(value = process.env.WRNEXUS_RUNTIME_CONNECTIONS) {
  if (!value) return {};
  const parsed = JSON.parse(value);
  if (!parsed || typeof parsed !== "object" || Array.isArray(parsed))
    throw new Error("WRNEXUS_RUNTIME_CONNECTIONS must be a JSON object");
  const allowed = new Set(["db", "databases", "realtime", "queue", "storage"]);
  for (const key of Object.keys(parsed)) {
    if (!allowed.has(key)) throw new Error(`Unsupported runtime connection: ${key}`);
    if (!parsed[key] || typeof parsed[key] !== "object" || Array.isArray(parsed[key]))
      throw new Error(`Runtime connection ${key} must be an object`);
  }
  return parsed;
}