/** Shared Client-safe settings shape; provider credentials and models remain provider-owned. */
export interface WebSearchRoutingConfig {
    /** Auto follows the initiating Chat provider; a concrete id pins the primary, and none disables search. */
    searchProvider?: string;
    /** Legacy primary selection; used only when searchProvider has not been explicitly saved. */
    searchMode?: 'auto' | 'fixed';
    /** Final fallback provider id, or none; legacy fixed mode also uses this id as its primary. */
    defaultSearchProvider?: string;
}
/** Operation-local normalized policy; reading legacy settings never migrates them on disk. */
export interface NormalizedWebSearchRouting {
    readonly primaryProvider: string;
    readonly defaultProvider: string;
    readonly legacy: boolean;
}
/** Resolve old and new settings without guessing registered providers or dropping unknown ids. */
export declare function normalizeWebSearchRouting(config: WebSearchRoutingConfig): NormalizedWebSearchRouting;
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