chore: move theme extraction to tauri backend

src/lib/components/ui/scroll-container/ScrollContainer.svelte

@@ -87,7 +87,7 @@
   <div class="scrollbar" style="top: {topOffset}px;">
     <!-- svelte-ignore a11y_no_static_element_interactions -->
     <div
-      class="thumb"
+      class="thumb bg-theme-600/60! hover:bg-theme-700! active:bg-theme-700 transition-colors"
       bind:this={thumb}
       onpointerdown={startDrag}
       onpointermove={drag}

src/lib/components/ui/sileo/sileo-toast.svelte

@@ -18,4 +18,4 @@
   });
 </script>
 
-<div bind:this={rootEl}></div>
+<div class="z-9999" bind:this={rootEl}></div>