import type { Request, Response } from 'express';
/** Extract Bearer token from Authorization header */
export declare function extractToken(req: Request): string | undefined;
/** Check auth — reads AUTH_TOKEN lazily from env (dotenv loads before route handlers run) */
export declare function checkAuth(req: Request, res: Response): boolean;
/** Resolve session: auth check + sessionId validation + build tmux session name */
export declare function resolveSession(req: Request, res: Response): string | null;
/** Hash token for settings storage (same prefix as tmux session names) */
export declare function tokenHash(token: string): string;