import type { ProjectsRepository } from "../../db/repositories/projects.repository";
export interface ConversationLikeForProjects {
    id: string;
    projectPath: string | null | undefined;
    createdAt?: string | null;
    latestMessageAt?: string | null;
}
/**
 * Group cached conversations by their canonical project path, find the
 * latest conversation per project, then upsert one project row per unique
 * path. Returns a map from canonical path → projectId so callers can
 * backfill conversation/session project_id columns afterwards.
 */
export declare function ensureProjectsForConversations(repo: ProjectsRepository, conversations: ConversationLikeForProjects[]): Map<string, string>;
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