/**
 * Trail command — fetch or publish trails to the Principal ADE backend.
 *
 * Resolves a GitHub token locally (gh CLI → git credential helper) and calls
 * the web-ade trail API with `Authorization: Bearer <token>`. The token is
 * never echoed to argv, env, stdout, or stderr. stdout is trail JSON (fetch)
 * or the share URL (publish) only.
 */
import { Command } from 'commander';
export declare const BASE_URL: string;
export declare function resolveToken(): string | null;
export declare function exitWithTokenError(): never;
export declare function describeHttpError(response: Response): Promise<string>;
export declare function gitRemoteUrl(cwd: string): string | null;
export declare function ownerRepoFromGitRemote(remoteUrl: string): {
    owner: string;
    name: string;
} | null;
export type ViewerLaunch = {
    kind: 'installed';
    bin: string;
} | {
    kind: 'source';
    dir: string;
};
export declare function resolveViewerLaunch(flag: string | undefined): ViewerLaunch;
export declare function createTrailCommand(): Command;
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