fix: a11y settings

src/routes/settings/(nav)/+layout.svelte

@@ -39,6 +39,7 @@
 		<h2 class="text-xl font-bold">Settings</h2>
 		<button
 			class="btn rounded-lg"
+			aria-label="Close settings"
 			on:click={() => {
 				goto(previousPage);
 			}}

src/routes/settings/(nav)/[...model]/+page.svelte

@@ -130,6 +130,7 @@
 			{/if}
 		</div>
 		<textarea
+			aria-label="Custom system prompt"
 			rows="10"
 			class="w-full resize-none rounded-md border-2 bg-gray-100 p-2"
 			bind:value={$settings.customPrompts[$page.params.model]}