logFileFromEnv function

String? logFileFromEnv(
  1. Map<String, String> env
)

The FA_LOG_FILE env twin of the --log-file flag: the tee path, for Docker/headless hosts that cannot pass flags. Absent or blank yields null (no tee intent); the flag wins when both are set.

Implementation

String? logFileFromEnv(Map<String, String> env) {
  final path = env['FA_LOG_FILE'];
  if (path == null || path.trim().isEmpty) return null;
  return path;
}