export interface StageLayout {
    model: string;
    /** The full lane order — every lane key (stages + smart lanes) in order. */
    stage_order: string[];
}
export interface UseStageLayoutResult {
    /** True only after a successful GET — gates the lane drag + reset affordance. */
    available: boolean;
    /** True when a custom order is stored server-side (drives the reset affordance). */
    hasCustomLayout: boolean;
    /** Persist the full lane order (the new order of every lane key). Throws on failure. */
    save: (order: string[]) => Promise<void>;
    /** Drop the stored order, reverting to the declared stage order. */
    reset: () => Promise<void>;
}
/**
 * Loads a model's saved lane order (only to learn availability + whether a
 * custom order exists) and exposes save/reset. A missing endpoint degrades to
 * `available: false` so the board's lane drag stays off; a real save failure
 * re-throws so the caller can revert its optimistic reorder.
 */
export declare function useStageLayout(model: string): UseStageLayoutResult;
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