Add timeout and validation to SearXNG search

src/lib/searxng.ts

@@ -38,11 +38,30 @@ export const searchSearxng = async (
     });
   }
 
-  const res = await fetch(url);
+  const controller = new AbortController();
+  const timeoutId = setTimeout(() => controller.abort(), 10000);
+
+  try {
+    const res = await fetch(url, {
+      signal: controller.signal,
+    });
+
+    if (!res.ok) {
+      throw new Error(`SearXNG error: ${res.statusText}`);
+    }
+
     const data = await res.json();
 
     const results: SearxngSearchResult[] = data.results;
     const suggestions: string[] = data.suggestions;
 
     return { results, suggestions };
+  } catch (err: any) {
+    if (err.name === 'AbortError') {
+      throw new Error('SearXNG search timed out');
+    }
+    throw err;
+  } finally {
+    clearTimeout(timeoutId);
+  }
 };