add debug to show web resarch result

app.py

@@ -141,9 +141,21 @@ def chat_response(user_msg, chat_history, system_prompt,
         else:
             enriched = system_prompt
 
-        # give search up to 1 second to fetch results, then proceed
+        # wait up to 1s for snippets, then replace debug with them
         if enable_search:
             thread_search.join(timeout=1.0)
+            if search_results:
+                debug = "### Search results merged into prompt\n\n" + "\n".join(
+                    f"- {r}" for r in search_results
+                )
+            else:
+                debug = "*No web search results found.*"
+
+        # merge fetched snippets into the system prompt
+        if search_results:
+            enriched = system_prompt.strip() + "\n\nRelevant context:\n" + "\n".join(search_results)
+        else:
+            enriched = system_prompt
 
         prompt = format_conversation(history, enriched)