import type { ChatMessage, ProviderId } from "../../types.js";
/**
 * Naming traffic is auxiliary: it keeps its own cache-affinity identity so a
 * short, unrelated prompt can never evict the turn/compaction cached prefix.
 */
export declare function completeForSessionNaming(messages: ChatMessage[], route: {
    provider?: ProviderId | undefined;
    model?: string | undefined;
}): Promise<string>;
export interface SessionNamingDeps {
    readonly complete: (messages: ChatMessage[]) => Promise<string>;
    readonly applyTitle: (title: string) => void;
    readonly enabled: () => boolean;
}
export declare class SessionNamer {
    private readonly deps;
    private userPromptCount;
    private nextNamingAt;
    private summary;
    private lastTitle;
    private namedMessageCount;
    private inFlight;
    private manual;
    constructor(deps: SessionNamingDeps);
    noteUserPrompt(userSent: boolean): void;
    markManual(): void;
    restore(title: string | undefined): void;
    reset(): void;
    maybeRename(history: readonly ChatMessage[]): void;
    private rename;
}