fix: separate bot vs viewer WebSocket connections, add client identification

The dashboard's own WS connection was being counted as a bot subscriber,
causing "1 bot connected" with no bots actually present. Now WS clients
send a role ("bot" or "viewer") in the subscribe message. Only bots count
toward the subscriber total. Bot plugins also send a configurable client_id
so the dashboard shows which specific bots are connected.

Made-with: Cursor

plugins/limnoria/NtrPlaylist/config.py

@@ -61,3 +61,12 @@ conf.registerGlobalValue(
         """IRC channel to send announce messages to.""",
     ),
 )
+
+conf.registerGlobalValue(
+    NtrPlaylist,
+    "clientId",
+    registry.String(
+        "limnoria",
+        """Identifier for this bot when connecting to the announce WebSocket.""",
+    ),
+)