fix(discord): don't announce anything but music

modules/home/discord/jellyfin-rpc.nix

@@ -29,8 +29,15 @@ let
           username = ["lain" "msyds"];
           music = {
             display = ["year" "album" "genres"];
-            separator = "-";
+            separator = "•";
           };
+          blacklist.libraries = [
+            "episode"
+            "movie"
+            "book"
+            "audiobook"
+            "livetv"
+          ];
         };
         images = {
           enable_images = true;