Simplify notification badges, improve performance (#57)

Co-authored-by: Jon Staab <shtaab@gmail.com>

src/app/components/SpaceMenuButton.svelte

@@ -3,15 +3,11 @@
   import Icon from "@lib/components/Icon.svelte"
   import Button from "@lib/components/Button.svelte"
   import SpaceMenu from "@app/components/SpaceMenu.svelte"
-  import {notifications} from "@app/util/notifications"
-  import {makeSpacePath} from "@app/util/routes"
   import {pushDrawer} from "@app/util/modal"
   import {deriveSocketStatus} from "@app/core/state"
 
   const {url} = $props()
 
-  const path = makeSpacePath(url) + ":mobile"
-
   const status = deriveSocketStatus(url)
 
   const openMenu = () => pushDrawer(SpaceMenu, {url})
@@ -21,7 +17,5 @@
   <Icon icon={MenuDots} />
   {#if $status.theme !== "success"}
     <div class="absolute right-0 top-0 -mr-1 -mt-1 h-2 w-2 rounded-full bg-{$status.theme}"></div>
-  {:else if $notifications.has(path)}
-    <div class="absolute right-0 top-0 -mr-1 -mt-1 h-2 w-2 rounded-full bg-primary"></div>
   {/if}
 </Button>