/**
 * Security-related constants and limits
 */
export declare const SECURITY_LIMITS: {
    MAX_PERSONA_SIZE_BYTES: number;
    MAX_FILENAME_LENGTH: number;
    MAX_PATH_DEPTH: number;
    MAX_CONTENT_LENGTH: number;
    MAX_YAML_LENGTH: number;
    MAX_METADATA_FIELD_LENGTH: number;
    MAX_FILE_SIZE: number;
    RATE_LIMIT_REQUESTS: number;
    RATE_LIMIT_WINDOW_MS: number;
    CACHE_TTL_MS: number;
    MAX_SEARCH_RESULTS: number;
};
export declare const VALIDATION_PATTERNS: {
    SAFE_FILENAME: RegExp;
    SAFE_PATH: RegExp;
    SAFE_USERNAME: RegExp;
    SAFE_CATEGORY: RegExp;
    SAFE_EMAIL: RegExp;
};
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