import type { VideoExecutionPayload, VideoExecutionPollResult } from './types.js';
export declare function loadWorkspaceEnv(workspaceRoot: string, env: NodeJS.ProcessEnv): Promise<NodeJS.ProcessEnv>;
export declare const DEFAULT_VEO_COMMAND_TIMEOUT_MS = 600000;
export declare function isSessionRefreshFailure(detail: string): boolean;
/**
 * Google's intellectual-property classifier flagged an INPUT IMAGE as
 * copyrighted, branded or recognizable content.
 *
 * The one Flow refusal that does NOT improve on retry (spec 2026-09-01): the
 * image is identical on every draw, so it is flagged again every time. It has
 * to be distinguished from probabilistic moderation because a job can carry
 * BOTH — `VIDEO_EDIT_BLOCKED` alongside `IP_PROHIBITED` — and then the
 * `[A-Z_]+_BLOCKED` alternation below would classify the whole thing as
 * retryable/softenable moderation.
 *
 * NOTE the name is a trap: the "IP" is *intellectual property*, nothing to do
 * with network addresses. Someone reading `IP_PROHIBITED` in a log will
 * otherwise start debugging proxies and egress rules.
 *
 * Canonical home for this predicate — motion-overlay's V2V transport imports it
 * rather than keeping a second copy that could drift.
 */
export declare function isIpProhibitedFailure(detail: string): boolean;
/**
 * Classify a failed Veo CLI attempt. Moderation is checked FIRST: a moderation
 * response whose detail happens to also contain a transient- or throttle-looking
 * phrase (e.g. "network error" / "permission_denied" inside an UNSAFE_GENERATION
 * envelope) must never be retried — moderation is deterministic for a given
 * prompt and a retry only burns credits. Throttle is checked before transient so
 * a reCAPTCHA / 403 / 429 burst takes the long cooldown, not the 2s socket-blip
 * backoff. Exported for tests; the retry loop is the only runtime caller.
 */
export declare function classifyVeoFailure(detail: string): 'moderation' | 'throttle' | 'transient' | 'fatal';
/**
 * Cooldown (ms) before retrying a {@link isThrottleFailure} burst-throttle.
 * Escalates with the attempt number (attempt×base) and is capped at 180s — long
 * enough to clear Flow's reCAPTCHA window, which a 2s transient backoff never
 * does. `VCLAW_VEO_THROTTLE_COOLDOWN_MS` overrides the base (default 75s; set 0
 * in tests for an instant retry).
 */
export declare function veoThrottleCooldownMs(env: NodeJS.ProcessEnv, attempt: number): number;
/**
 * Soften aggressive motion wording that Veo content-moderation rejects, returning
 * the rewritten prompt and whether anything changed. PURE; exported for tests and
 * the opt-in safe-motion retry. Retrying is only worthwhile when `changed` is true
 * — an unchanged prompt would re-trigger the same deterministic reject.
 */
export declare function softenMotionPrompt(prompt: string): {
    prompt: string;
    changed: boolean;
};
/** omni-flash R2V accepts up to 7 reference images. */
export declare const VEO_MAX_R2V_REFS = 7;
export declare function submitVeoUseApiNative(payload: VideoExecutionPayload, options?: {
    env?: NodeJS.ProcessEnv;
}): Promise<{
    externalJobId: string;
    rawResult: unknown;
}>;
export declare function pollVeoUseApiNative(input: {
    outputDir: string;
    externalJobId: string;
}): Promise<VideoExecutionPollResult>;
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