/** Shared Director navigation, edit merging and locale-owned version labels. */
export type DirectorTab = "manuscript" | "storyboard" | "keyframes" | "video";
export interface DirectorPosition {
    tab: DirectorTab;
    index: number;
}
export interface DirectorDraft {
    base: Record<string, string>;
    values: Record<string, string>;
}
/** Whether the editable fields differ from their last saved values. */
export declare function isDirectorDraftDirty(draft: DirectorDraft): boolean;
/** Studio stage tabs and the iframe Director share one button treatment. */
export declare function studioTabStyle(active: boolean, colors: {
    hover: string;
    brand: string;
    primary: string;
}): {
    display: string;
    alignItems: string;
    gap: string;
    border: string;
    borderRadius: string;
    background: string;
    borderColor: string;
    color: string;
    padding: string;
    cursor: string;
    fontSize: string;
    fontWeight: string;
    lineHeight: string;
    whiteSpace: "nowrap";
};
/** Refresh untouched fields while preserving local edits and their conflict baseline. */
export declare function refreshDirectorDraft(draft: DirectorDraft, latest: Record<string, string>): void;
export declare const directorText: {
    zhCN: {
        tabs: {
            manuscript: string;
            storyboard: string;
            keyframes: string;
            video: string;
        };
        versions: string;
        current: string;
        selected: string;
        missing: string;
        noFrames: string;
        noVideo: string;
        previous: string;
        next: string;
        conflict: string;
        missingTarget: string;
        units: string;
        unit: string;
        source: {
            generated: string;
            imported: string;
            library: string;
        };
    };
    en: {
        tabs: {
            manuscript: string;
            storyboard: string;
            keyframes: string;
            video: string;
        };
        versions: string;
        current: string;
        selected: string;
        missing: string;
        noFrames: string;
        noVideo: string;
        previous: string;
        next: string;
        conflict: string;
        missingTarget: string;
        units: string;
        unit: string;
        source: {
            generated: string;
            imported: string;
            library: string;
        };
    };
};
/** Walk frames before crossing the adjacent tab; empty frames occupy one position. */
export declare function stepDirector(position: DirectorPosition, count: number, direction: -1 | 1): DirectorPosition;
/** Merge only edited text fields; media and other frames come from the latest read. */
export declare function mergeDirectorDrafts<T extends {
    manuscript: string;
    storyboard: {
        description: string;
        fullPrompt: string;
        promptMode: string;
    };
    keyframes: Array<{
        id: string;
        description: string;
        fullPrompt: string;
        promptMode: string;
    }>;
}>(unit: T, drafts: Record<string, DirectorDraft>, only?: string): Record<string, unknown>;