/**
 * First-run generation of the global runtime.yaml (issue #1136).
 *
 * On first run the global `~/.takt/runtime.yaml` is generated. A fresh environment gets an
 * *active* file built from the selected provider/model (`profiles.default` + `defaults.profile`);
 * an existing legacy environment gets only an *inactive* `version: 1` file so behavior does not
 * switch. An existing file is never overwritten, only schema-validated content is written, and
 * the write is atomic (temp file + rename).
 */
import type { ProviderType } from '../../../shared/types/provider.js';
export interface RuntimeProviderSelection {
    provider: ProviderType;
    model: string;
}
export interface GenerateGlobalRuntimeProviderFileInput {
    runtimeFilePath: string;
    selection: RuntimeProviderSelection | undefined;
    hasLegacyProviderConfig: boolean;
}
export declare function generateGlobalRuntimeProviderFile(input: GenerateGlobalRuntimeProviderFileInput): void;
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