feat(gateway): enable djs/voice debug logging on watch Networking

Add debug:true to watch Networking options and wire net.on('debug') to
logger.info so djs/voice internal WS/DAVE state transitions appear in
journal. Without this, the stream-watch connection went silent after
'Streaming DAVE Networking' — no ready/error/close visible. Needed to
diagnose why the WS to stream endpoint 'c-sin14-xxx:2083' produced no
events.

services/discord-gateway/src/modules/voice-recording/streamWatchReceiver.ts

@@ -247,7 +247,7 @@ function connectWatch(
       token,
       channelId: daveChannelId,
     },
-    { daveEncryption: true },
+    { daveEncryption: true, debug: true },
   );
 
   const uidProps = uid;
@@ -294,6 +294,9 @@ function connectWatch(
     );
     closeWatchByKey(watchKey);
   });
+  net.on("debug", (msg) => {
+    logger.info({ userId: uid, msg }, "watch-djs-debug");
+  });
   net.on("close", () => {
     closeWatchByKey(watchKey);
   });