/**
 * Shared banner-block builder.
 *
 * Emits the opening banner as a sequence of semantically-classed
 * blocks. Used by `handleGameStarted` for the game-start banner.
 * (ABOUT renders via the lang-en-us `if.action.about.success` template
 * since 2026-07-02; its dedicated handler was removed.)
 *
 * Pieces (in order):
 *
 *  1. `game-title`         — title
 *  2. `story-version`      — `Story v{version}` + optional build date
 *  3. `platform-version`   — `Sharpee v{engineVersion}` (if provided)
 *  4. `sub-title`          — description (if provided)
 *  5. `author-list[]`      — `credits` if provided, else single
 *                            `By {author}` line if `author` is set
 *  6. `banner-spacer`      — empty `<p>` for visual separation
 *  7. story-tail           — appended via `createBlocks` from
 *                            `game.banner.story-tail` if the language
 *                            provider has that template
 *
 * Owner context: `@sharpee/engine` — internal prose pipeline.
 */
import type { ITextBlock } from '@sharpee/text-blocks';
import type { HandlerContext } from './types';
/**
 * Subset of story metadata used by the banner builder.
 * `handleGameStarted` projects `event.data.story` into this shape.
 */
export interface BannerStoryInfo {
    title?: string;
    version?: string;
    buildDate?: string;
    description?: string;
    author?: string;
    credits?: string[];
}
/**
 * Build the structured banner blocks for a `key` (typically
 * `'game.banner'` from `game.started`).
 */
export declare function buildBannerBlocks(key: string, story: BannerStoryInfo | undefined, engineVersion: string | undefined, context: HandlerContext): ITextBlock[];
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