/**
 * Prompt injection sanitizer — strips common injection patterns from agent outputs.
 * Applied at the boundary where sub-agent results re-enter the orchestrator's context.
 */
export interface SanitizeResult {
    text: string;
    flagged: boolean;
    warnings: string[];
}
export interface ResearchArtifactEnvelope {
    query: string;
    scope: string;
    sources: string[];
    findings: string[];
    open_questions: string[];
    next_actions: string[];
}
interface ArtifactBuildOptions {
    query?: string;
    scope?: string;
}
/**
 * Sanitize text from agent outputs to prevent prompt injection.
 * Returns the cleaned text plus any warnings.
 */
export declare function sanitizeAgentOutput(input: unknown): SanitizeResult;
export declare function buildResearchArtifactEnvelope(input: unknown, options?: ArtifactBuildOptions): ResearchArtifactEnvelope;
export declare function formatResearchArtifactEnvelope(envelope: ResearchArtifactEnvelope): string;
/**
 * Apply sanitizer to a spawn_agent result string.
 * Adds a warning banner if injection was detected.
 */
export declare function sanitizeSpawnResult(result: unknown): string;
export {};