performance: exclude lyrics if they are not enabled

internal/app/app.go

@@ -121,6 +121,10 @@ func New(cfg *config.Config) (*Main, error) {
 	}, nil
 }
 
+// downloaderMaxConnsPerHost picks the per-host idle connection cap for the
+// shared download client. We floor at 16 so artwork/manifest fetches and
+// concurrent track downloads to the same CDN host can reuse keep-alive
+// sockets even when the user configured a tiny max_connections.
 func downloaderMaxConnsPerHost(maxConnections int) int {
 	if maxConnections > 16 {
 		return maxConnections