/**
 * platform-specs.ts — deterministic per-platform delivery spec table.
 *
 * The asset-format analogue of cinematography.ts `--detail` levels: a pure,
 * no-LLM lookup mapping a social/ad platform id to its aspect ratio and copy
 * word-caps, so campaign output is correct-by-construction (right dimensions,
 * platform-appropriate copy length + tone).
 *
 * Concept (not code) adapted from the MIT-licensed Open-Pomelli `platforms.ts`.
 * A `bodyMaxWords`/`ctaMaxWords` of 0 means that surface suppresses that copy
 * slot (e.g. a thumbnail has a headline but no body).
 */
export type PlatformAspect = '16:9' | '9:16' | '1:1' | '4:5';
export interface PlatformSpec {
    id: string;
    label: string;
    aspect: PlatformAspect;
    headlineMaxWords: number;
    bodyMaxWords: number;
    ctaMaxWords: number;
    tone: string;
}
export declare function getPlatformSpec(id: string): PlatformSpec | undefined;
export declare function listPlatformSpecs(): PlatformSpec[];
export declare function platformIds(): string[];
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