/**
 * [WHO]: ToolName, parseToolName(), normalizeToolName(), BUILTIN_NAMESPACE
 * [FROM]: Pure internal naming utility with no dependencies
 * [TO]: Consumed by tool-registry.ts and orchestrator.ts
 * [HERE]: core/tools/tool-name.ts - canonical internal keys for runtime tools
 */
/** Canonical namespace for unqualified Catui tool names. */
export declare const BUILTIN_NAMESPACE: "functions";
export interface ToolName {
    readonly namespace: string;
    readonly localName: string;
    readonly fullName: string;
    readonly original: string;
}
export type ToolNameParseResult = {
    ok: true;
    value: ToolName;
} | {
    ok: false;
    error: string;
};
export declare function parseToolName(name: string, defaultNamespace?: string): ToolNameParseResult;
export declare function normalizeToolName(name: string, defaultNamespace?: string): string;