/**
 * Config MCP Tools — persistent store and key-safety helpers.
 * Extracted from config-tools.ts.
 */
export interface ConfigStore {
    values: Record<string, unknown>;
    scopes: Record<string, Record<string, unknown>>;
    version: string;
    updatedAt: string;
}
export declare const DEFAULT_CONFIG: Record<string, unknown>;
export declare function getConfigPath(): string;
export declare function loadConfigStore(): ConfigStore;
export declare function saveConfigStore(store: ConfigStore): void;
export declare function _getNestedValue(obj: Record<string, unknown>, key: string): unknown;
export declare const DANGEROUS_KEYS: Set<string>;
export declare function filterDangerousKeys(obj: Record<string, unknown>, depth?: number): Record<string, unknown>;
export declare function _setNestedValue(obj: Record<string, unknown>, key: string, value: unknown): void;
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