/**
 * Base class for all Hivemind runtime errors.
 *
 * Every `HivemindError` automatically prepends `[Hivemind]` to the error message,
 * which the TUI suppression layer (REQ-34C) uses to route the error to
 * `client.app.log()` instead of `client.tui.showToast()`.
 *
 * @example
 * ```ts
 * class ConfigNotFoundError extends HivemindError {
 *   readonly name = "ConfigNotFoundError" as const
 *   constructor(message?: string) {
 *     super("C8", "config", message ?? "Configuration file not found")
 *   }
 * }
 * ```
 */
export declare class HivemindError extends Error {
    /** Machine-readable error code, e.g. `"CONFIG_NOT_FOUND"`. */
    readonly code: string;
    /**
     * Cluster identifier — maps to the architectural cluster (C0–C9).
     * @see `.planning/codebase/ARCHITECTURE.md` for cluster definitions.
     */
    readonly cluster: string;
    /**
     * Module name within the cluster, e.g. `"errors"`, `"delegation"`, `"config"`.
     */
    readonly module: string;
    constructor(cluster: string, module: string, message: string, code?: string);
}
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