/**
 * Scene headcount lint — pure/deterministic, no I/O.
 *
 * Production-learned: a video model treats an unbounded plural as licence to
 * invent people. The phrase that broke a 37-shot film was
 *
 *   "@A and @B, with four more women in silk sarees behind them, walk abreast"
 *
 * which has no identity, no count and no position for the "four more". The
 * renders came back with duplicated leads, invented cast, and figures walking
 * in from frame edges mid-clip — eight clips discarded.
 *
 * The standing render rules already appended "no duplicates or extra figures"
 * to every prompt and the model IGNORED it. Negative prohibitions do not bind;
 * a positive count does. What fixed it:
 *
 *   "exactly two women are in frame, @A and @B ... the corridor beyond them is
 *    empty. Medium, 35mm"
 *
 * — an exact count, the background described as empty rather than forbidden,
 * and a longer lens so there is no vacant frame left to populate.
 */
export type SceneHeadcountCode = 'unbounded-crowd' | 'missing-explicit-count' | 'wide-multi-subject';
export interface SceneHeadcountFinding {
    sceneIndex: number;
    code: SceneHeadcountCode;
    severity: 'error' | 'warning';
    message: string;
    /** The matched text, so the operator can see exactly what tripped the rule. */
    evidence?: string;
}
export interface SceneHeadcountResult {
    ok: boolean;
    errorCount: number;
    warningCount: number;
    findings: SceneHeadcountFinding[];
}
export interface SceneHeadcountInput {
    sceneIndex: number;
    description: string;
    /** Storyboard cast field. Often absent — `--scene` authoring never sets it. */
    characters?: string[];
    /** Character names this scene references by @tag (caller resolves these). */
    taggedCharacters?: string[];
}
/**
 * Lint scenes for headcount hazards. Errors are unambiguous defects (an
 * unbounded plural); warnings are prompts that will probably survive but carry
 * the risk that produced the original failure.
 */
export declare function lintSceneHeadcount(scenes: SceneHeadcountInput[]): SceneHeadcountResult;
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