/** The table cannot be had: the slot holds a value that is not the engine's table (a deployment reset it), or the slot cannot be written. Registrations would be lost
 *  and a renamed mount would read as a clean one — so this is a refusal (`config.tool_face_control`, `detail.reason: "registry_occupied"`), never a fresh table. */
export declare class DelegationRegistryOccupied extends Error {
    readonly code: "config.tool_face_control";
    readonly detail: {
        reason: "registry_occupied";
    };
    constructor(why: string);
}
/** Binds `name` to `tool.execute` (the function that carries the delegation out) and returns the tool. */
export declare function bindDelegationName<T extends {
    readonly execute: unknown;
}>(name: string, tool: T): T;
/** A product's wrapper around a bound `execute` is the same delegation: it answers to the name its source did. */
export declare function carryDelegationName(source: unknown, product: unknown): void;
/** The name the delegation tool this roster entry carries declared — or `undefined` (not a delegation tool the factory made, or its `execute` was wrapped by the host).
 *  An entry whose members cannot be read reads as undeclared (the roster snapshot refuses it); an occupied table throws {@link DelegationRegistryOccupied}. */
export declare function declaredDelegationNameOf(tool: unknown): string | undefined;