pub fn hub_config(flag_hub: Option<&str>, dir: &Path) -> LinkResult<HubConfig>Expand description
Resolve the client configuration: flag_hub beats HUB_URL_ENV beats
the hub = line in <dir>/.dbmd/config; no fallback default exists. The
credential comes from HUB_KEY_ENV alone and is validated as a clean
header token (never echoed on failure).