minor: heavily simplify server and app content. unify styling (#4)

Co-authored-by: Madison Grubb <madison@elastiflow.com>
Reviewed-on: #4

app/pages/index.vue

@@ -28,7 +28,8 @@ const { canEditPois } = useUser()
 const selectedCamera = ref(null)
 
 function onSelectLive(session) {
-  const latest = (liveSessions.value || []).find(s => s.id === session?.id)
-  selectedCamera.value = latest ?? session
+  selectedCamera.value = (liveSessions.value ?? []).find(s => s.id === session?.id) ?? session
 }
+
+useAutoCloseLiveSession(selectedCamera, liveSessions)
 </script>