feat(search): show result count and term-aware empty state in DocumentList

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/routes/DocumentList.svelte

@@ -6,7 +6,9 @@ import { formatDate } from '$lib/utils/date';
 let {
 	documents,
 	canWrite,
-	error
+	error,
+	total = 0,
+	q = ''
 }: {
 	documents: {
 		id: string;
@@ -20,6 +22,8 @@ let {
 	}[];
 	canWrite: boolean;
 	error?: string | null;
+	total?: number;
+	q?: string;
 } = $props();
 </script>
 
@@ -41,6 +45,11 @@ let {
 	{/if}
 </div>
 
+<!-- RESULT COUNT -->
+{#if total > 0}
+	<p class="mb-3 font-sans text-sm text-ink-2">{m.docs_result_count({ count: total })}</p>
+{/if}
+
 <!-- DOCUMENT LIST -->
 <div class="border border-line bg-surface shadow-sm">
 	{#if error}
@@ -162,7 +171,7 @@ let {
 			</div>
 			<h3 class="font-serif text-lg font-medium text-ink">{m.docs_empty_heading()}</h3>
 			<p class="mt-1 font-sans text-sm text-ink-2">
-				{m.docs_empty_text()}
+				{q ? m.docs_empty_for_term({ term: q }) : m.docs_empty_text()}
 			</p>
 			<button
 				onclick={() => goto('/')}