/**
 * ZCode credential and environment handling.
 *
 * Vendored from the reference Python implementation so this package stays
 * self-contained. The ZCode desktop app stores provider credentials in
 * `~/.zcode/v2/config.json`; GUI-launched processes don't inherit shell env
 * vars, so we read the config and inject the active provider's settings into
 * the subprocess environment.
 */
/** Credentials extracted from the active provider. */
export interface ZcodeCredentials {
    ZCODE_MODEL?: string;
    ZCODE_BASE_URL?: string;
    ANTHROPIC_API_KEY?: string;
}
/** Read the active provider's credentials from config.json. Best-effort. */
export declare function loadZcodeCredentials(): ZcodeCredentials;
/**
 * Merge process.env with config credentials.
 *
 * Explicit non-empty env vars override config (so `ZCODE_MODEL=foo` works as a
 * temporary override). Empty-string env vars are treated as unset so they
 * don't clobber the config value.
 *
 * Also self-heals a stale `ZCODE_BASE_URL`: if the env value is the endpoint
 * of a *different* provider in config (a leftover from switching plans in the
 * App), revert to the enabled provider's URL. User-defined custom endpoints
 * are respected.
 */
export declare function mergeEnvWithCreds(creds: ZcodeCredentials): NodeJS.ProcessEnv;
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