fix: Hide sidebar on login/signup

src/routes/(main)/+layout.svelte

@@ -0,0 +1,9 @@
+<script lang="ts">
+  import MainLayout from '$lib/components/mainLayout.svelte';
+  import type { LayoutProps } from './$types';
+  let { data, children }: LayoutProps = $props();
+</script>
+
+<MainLayout {data}>
+  {@render children()}
+</MainLayout>

src/routes/(main)/channel/[channel]/+page.svelte

@@ -84,7 +84,8 @@
       use:autoResize
       class="flex h-10 min-h-10 w-full resize-none rounded-md border border-input bg-transparent px-3 py-2 text-sm
       shadow-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1
-      focus-visible:ring-ring disabled:cursor-not-allowed disabled:opacity-50"></textarea>
+      focus-visible:ring-ring disabled:cursor-not-allowed disabled:opacity-50"
+    ></textarea>
     <Button class="h-full min-h-10 w-14" type="submit"><Send class="size-full" /></Button>
   </form>
 </div>

src/routes/+layout.svelte

@@ -1,12 +1,8 @@
 <script lang="ts">
-  import MainLayout from '$lib/components/mainLayout.svelte';
   import { ModeWatcher } from 'mode-watcher';
   import '../app.css';
-  import type { LayoutProps } from './$types';
-  let { data, children }: LayoutProps = $props();
+  let { children } = $props();
 </script>
 
 <ModeWatcher />
-<MainLayout {data}>
 {@render children()}
-</MainLayout>