refactor: keep message capture on fast path

src/moderation/types.ts

@@ -1,5 +1,9 @@
+import type { ModerationBroadcaster } from "./broadcaster";
+
 export type AIStatus = "pending" | "clean" | "warn" | "flagged" | "error";
 
+export type { ModerationBroadcaster };
+
 export interface MessageRecord {
   id: string;
   guild_id: string;