import type { Database as DatabaseType } from 'better-sqlite3';
export declare function setPermission(db: DatabaseType, email: string, topicId: number | null, targetAgent: string, allowed: boolean): void;
export declare function getPermissions(db: DatabaseType, email: string, topicId: number | null): Array<{
    target_agent: string;
    allowed: number;
    topic_id: number | null;
}>;
export declare function setAlias(db: DatabaseType, topicId: number, alias: string, agentName: string): void;
export declare function resolveAlias(db: DatabaseType, topicId: number, alias: string): string | undefined;
export declare function getTopicAliases(db: DatabaseType, topicId: number): Array<{
    alias: string;
    agent_name: string;
}>;
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