recording timer, bux fixes, simplified emitter

src/render/components/context.js

@@ -9,6 +9,7 @@ const Context =
         Vue.onMounted(() => {
             window.mainApi.on("playback", (id, status) => {
                 if (id === props.id) {
+                    console.log(id, status);
                     playback.value = status;
                 }
             });