feat: wire media playback into webserver

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/moderation/broadcaster.ts

@@ -3,6 +3,7 @@ import { createChildLogger } from "../logger";
 import type {
   AnalysisQueueStatus,
   AttachmentRecord,
+  MediaState,
   MessageRecord,
   ModerationWsEvent,
 } from "./types";
@@ -72,7 +73,10 @@ export function createBroadcaster() {
     analysisQueueStatus(data: AnalysisQueueStatus) {
       sendJson(clients, { type: "analysis_queue_status", data });
     },
+    mediaState(state: MediaState) {
+      sendJson(clients, { type: "media_state", state });
+    },
   };
 }
 
-export type ModerationBroadcaster = ReturnType<typeof createBroadcaster>;
+export type ModerationBroadcaster = ReturnType<typeof createBroadcaster>;