export interface PreviewCreated {
    scopeId: string;
    hostname: string;
    url: string;
    versionId: string;
    reused: boolean;
}
export interface PreviewRow {
    scopeId: string;
    tag: string | null;
    versionId: string | null;
    forkedFrom: string | null;
    expiresAt: string | null;
    hostname: string | null;
    url: string | null;
}
/**
 * Create (or update) a preview. Idempotent on the tag: a second call with the same tag —
 * what a PR *synchronize* triggers — rebinds the new version onto the SAME fork so the
 * PR's successive pushes roll their migrations forward on one copy (§4). `refresh` forces
 * a clean fork from prod instead.
 */
export declare function createPreview(opts: {
    controlPlaneUrl: string;
    header: Record<string, string>;
    slug: string;
    tag: string;
    versionId: string;
    sourceScopeId?: string;
    empty?: boolean;
    ttlHours?: number | null;
    surface?: string;
    refresh?: boolean;
}): Promise<PreviewCreated>;
/** Reap a preview by tag. Idempotent: an already-gone preview is a no-op success, so a
 *  PR-close job never fails because the preview was already removed. */
export declare function deletePreview(opts: {
    controlPlaneUrl: string;
    header: Record<string, string>;
    slug: string;
    tag: string;
}): Promise<{
    deleted: string | null;
}>;
export declare function listPreviews(opts: {
    controlPlaneUrl: string;
    header: Record<string, string>;
    slug: string;
}): Promise<PreviewRow[]>;
/** Render previews as an aligned table (the `substrat preview ls` output). */
export declare function formatPreviews(rows: PreviewRow[]): string;
/**
 * Parse a `--ttl` value like `72h`, `3d`, or a bare number of hours → hours. The literal
 * `none`/`pinned` returns `null` — a preview kept alive until it is deliberately deleted
 * (a long-lived `--tag dev` environment), distinct from `undefined` = the 72h default.
 */
export declare function parseTtlHours(raw: string | undefined): number | null | undefined;
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