export declare const MAX_EXCLUDED_MODEL_IDS = 512;
/** Admission is bound to the native turn and its request signal, not the global picker. */
export declare class ModelExclusionTurns {
    private readonly turns;
    private readonly signals;
    admit(owner: object, turn: number, model: string, signal: AbortSignal, excluded: ReadonlySet<string>): boolean;
    permits(signal: AbortSignal | undefined, model: string): boolean;
    end(owner: object): void;
}
export declare function normalizeExcludedModelIds(value: unknown): readonly string[];
export declare function excludedModelSet(value: unknown): ReadonlySet<string>;
export declare function filterExcludedModels<T extends {
    readonly id: string;
}>(models: readonly T[], value: unknown): readonly T[];
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