import type { AIProviderConfig, AppConfig, TuneConfig, UserPreferences } from '../types/config.js';
/**
 * Resolves tune configuration by merging layers:
 * hardcoded defaults → config top-level → config per-provider → preferences → session
 */
export declare function resolveTune(appConfig?: AppConfig, providerConfig?: AIProviderConfig, preferences?: UserPreferences, sessionOverride?: TuneConfig): TuneConfig;
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