/**
 * Shared Defaults
 *
 * Constants used by more than one module, single-sourced here so they can't
 * drift apart. Cleanup defaults are shared between plugin.ts (chatter plugin
 * mode) and standalone.ts (standalone server mode), which each wire up the
 * same context/pending-query cleanup sweep and must agree on its defaults.
 */
export declare const DEFAULT_CONTEXT_TTL_MS: number;
export declare const DEFAULT_CLEANUP_INTERVAL_MS: number;
export declare const DEFAULT_PENDING_QUERY_TTL_MS: number;
/**
 * OpenAI model for the incoming/outgoing processing pipeline when
 * `processing.model` is not configured. Shared between plugin.ts and
 * standalone.ts, which both resolve `openaiModel` the same way.
 */
export declare const DEFAULT_PROCESSING_MODEL = "gpt-4o-mini";
/**
 * Sentinel used across every channel handler when Twilio's webhook payload
 * omits `From` (malformed or replayed request). Also the value `redactPhone`
 * (see `./logger`) passes through unredacted, since it carries no PII.
 */
export declare const UNKNOWN_PHONE_NUMBER = "unknown";