Function readKey

showcase/shell-docs/src/lib/runtime-config.ts:208–211

* Read an analytics key. Empty/missing values are returned as the empty * string with NO log — analytics keys are legitimately absent in * non-production envs (the consumer providers no-op when the key is * empty), and the existing shell-docs/Dockerfile documents the same * behavior. Adding a pr

(envKey: string)

 * intentionally analytics-disabled environments.
 */
function readKey(envKey: string): string {
  const value = readEnvPair(envKey);
  return value !== undefined ? value : "";
}