/**
 * Email screening via Claude Haiku (OAuth, never API key — admin path).
 *
 * Classifies inbound emails before they enter Neo4j. Verdicts:
 *   clean      — legitimate correspondence, store normally
 *   suspicious — phishing indicators or prompt injection patterns, store with flag
 *   discard    — obvious spam / bulk marketing / auto-generated noise, store without embedding
 *
 * On any failure the email defaults to "suspicious" (deny by default).
 * Auth: runs on Claude Code OAuth via `callOauthLlm`.
 */
export interface ScreeningInput {
    fromAddress: string;
    fromName: string | null;
    subject: string;
    bodyPreview: string;
}
export interface ScreeningResult {
    verdict: "clean" | "suspicious" | "discard";
    reason: string;
    promptInjectionRisk: boolean;
}
/**
 * Classify a single email via Haiku. Returns a ScreeningResult.
 * On any failure (network, auth, malformed response), returns
 * { verdict: "suspicious", reason: "<error>", promptInjectionRisk: false }.
 */
export declare function screenEmail(input: ScreeningInput): Promise<ScreeningResult>;
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