/**
 * Seedance 2.0 content-filter logic.
 *
 * A faithful TypeScript port of the content-filter functions in
 * `skills/video-replicator/scripts/seedance_client.py`
 * (pre_validate_prompt, sanitize_prompt L1/L2, is_content_violation,
 * _suggest_recovery). Pure and deterministic — no I/O, no network.
 *
 * Seedance enforces strict server-side safety filters (prompt scan + input
 * analysis). Filters tightened significantly after launch due to Hollywood IP
 * backlash, deepfake concerns, and Chinese regulatory requirements. Risk
 * categories (per the source skill):
 *
 *   HIGH RISK (almost always blocked):
 *   - Real human faces/photos as reference images
 *   - Children/minors
 *   - Celebrity/public figure names or strong likenesses
 *   - Copyrighted characters/IP (Marvel, Disney, Star Wars, anime named, ...)
 *   - NSFW / nudity / sexual / suggestive content
 *   - Political figures or sensitive political topics
 *
 *   MEDIUM RISK (sometimes blocked, retry with sanitization):
 *   - Realistic human figures without stylization cues
 *   - Brand names, trademarks, product names
 *   - Violence/combat (graphic)
 *
 *   SAFE (reliable):
 *   - Generic "young adult figure", "elegant dancer", "athletic person"
 *   - Fully stylized: anime, cartoon, 3D render, illustration, painting
 *   - Camera/motion descriptors: dolly, pan, push in, slow zoom, cinematic
 *   - Environment/nature/architecture without identifiable real places
 */
export type ContentFilterLevel = 'HIGH' | 'MEDIUM' | 'LOW';
export interface ContentFilterWarning {
    level: ContentFilterLevel;
    reason: string;
    match: string;
}
/**
 * Check if an error message indicates a content regulation violation
 * (error code 2038). These errors come from Seedance's Chinese content
 * moderation and are retryable with prompt sanitization.
 *
 * Port of `is_content_violation`.
 */
export declare function isContentViolation(errorMsg: string): boolean;
/**
 * Check a prompt for likely content filter triggers before submission.
 *
 * Returns a list of warnings, each with `{ level, reason, match }`.
 *   HIGH   — near-certain filter triggers.
 *   MEDIUM — sometimes pass but should be reworded if errors occur.
 *   LOW    — advisory only.
 *
 * Port of `pre_validate_prompt`.
 */
export declare function preValidatePrompt(prompt: string): ContentFilterWarning[];
/**
 * Sanitize a prompt to avoid content regulation violations.
 *
 * @param prompt Original prompt text (may contain @image1/@video1/@audio1 refs).
 * @param level  Sanitization aggressiveness:
 *   1 = Light: strip brand names, celebrity/IP names, marketing superlatives,
 *       replace minors with "young adult".
 *   2 = Heavy: reduce to pure camera motion + generic visual description.
 *
 * Media references (@image1, @video1, @audio1) are extracted and re-prefixed
 * at the start (where Seedance expects them).
 *
 * Port of `sanitize_prompt`.
 */
export declare function sanitizePrompt(prompt: string, level?: number): string;
/**
 * Suggest a fix based on the error message.
 *
 * Port of `_suggest_recovery` (the `prompt` argument in the Python source is
 * unused, so it is omitted here).
 */
export declare function suggestRecovery(errorMsg: string): string;
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