refactor: unify inbound debounce policy and split gateway/models helpers

src/auto-reply/inbound-debounce.ts

@@ -39,14 +39,16 @@ type DebounceBuffer<T> = {
   debounceMs: number;
 };
 
-export function createInboundDebouncer<T>(params: {
+export type InboundDebounceCreateParams<T> = {
   debounceMs: number;
   buildKey: (item: T) => string | null | undefined;
   shouldDebounce?: (item: T) => boolean;
   resolveDebounceMs?: (item: T) => number | undefined;
   onFlush: (items: T[]) => Promise<void>;
   onError?: (err: unknown, items: T[]) => void;
-}) {
+};
+
+export function createInboundDebouncer<T>(params: InboundDebounceCreateParams<T>) {
   const buffers = new Map<string, DebounceBuffer<T>>();
   const defaultDebounceMs = Math.max(0, Math.trunc(params.debounceMs));