/**
 * Pure text boundary for context and durable-memory threat screening.
 *
 * Memory providers run during ordinary session construction, so this module must remain independent
 * from resource discovery, themes, package management, Jiti, and extension loading.
 */
export type ThreatScope = "context" | "strict";
export declare function hasInvisibleUnicode(content: string): boolean;
export declare function stripInvisibleUnicode(content: string): {
    cleaned: string;
    removed: number;
};
export declare function scanContextFileThreats(content: string, scope?: ThreatScope): string[];
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