/**
 * Try to read Claude Code credentials from the macOS Keychain and cache them.
 * This only succeeds when run from a session with Keychain access (local GUI terminal).
 * Returns the access token if successful, undefined otherwise.
 */
export declare function tryCacheClaudeAuth(): string | undefined;
/**
 * Read the cached Claude auth token from disk.
 * Returns the access token if available and not expired.
 */
export declare function readCachedClaudeAuth(): string | undefined;
/**
 * Resolve Claude auth token: try Keychain first, then cache.
 */
export declare function resolveClaudeAuth(): string | undefined;