Function apex_server_url

atomic-cli/src/commands/client.rs:135–148

Resolve just the apex server URL for a server override. Unlike [`build_apex_client`], this performs **no** identity resolution and no** token minting — it is a pure local config read. Commands use it to namespace local state (e.g. the resolved-key cache) by server before any network I/O, so offline cache hits never touch the network.

(server_override: Option<&str>)

/// namespace local state (e.g. the resolved-key cache) by server before any
/// network I/O, so offline cache hits never touch the network.
pub fn apex_server_url(server_override: Option<&str>) -> CliResult<String> {
    let config = GlobalConfig::load()
        .map_err(|e| CliError::Internal(anyhow::anyhow!("Failed to load global config: {}", e)))?;

    let server = config
        .resolve_server(server_override)
        .map_err(|e| CliError::Internal(anyhow::anyhow!("{}", e)))?
        .0;

    server
        .url
        .clone()
        .ok_or_else(|| server_url_missing(server_override))
}

/// Error used when no server is configured — shared by the apex helpers.
fn server_url_missing(server_override: Option<&str>) -> CliError {