Improve fallback path

app.py

@@ -20,10 +20,11 @@ for title, _ in titles.values():
 def suggest():
     """Serve movie title suggestions"""
     query = request.args.get("q")
-    if not query:
-        return {}
+    results = []
+
+    if query:
+        results = index.search(query)
 
-    results = index.search(query)
     return {
         "suggestions": results[:100]
     }