fixed the RAg in test pipeline issue

app/routers/chat.py

@@ -1,3 +1,4 @@
+import asyncio
 import time
 from collections import defaultdict
 
@@ -311,8 +312,7 @@ async def test_chat(
     company_data = chatbot.get("companies", {}) or {}
     chatbot_config = {**chatbot, "company_name": company_data.get("name", "")}
 
-    results = []
-    for question in body.questions:
+    async def _run_one(question: str) -> TestChatResult:
         try:
             result = await rag_engine.process_query(
                 query=question,
@@ -322,22 +322,24 @@ async def test_chat(
                 language="auto",
                 bypass_cache=True,
             )
-            results.append(TestChatResult(
+            return TestChatResult(
                 question=question,
                 response=result["response"],
                 confidence_score=result.get("confidence_score", 0.0),
                 sources=result.get("sources", []),
                 model_used=result.get("model", ""),
-            ))
+            )
         except Exception as e:
-            results.append(TestChatResult(
+            return TestChatResult(
                 question=question,
                 response=f"Error: {e}",
                 confidence_score=0.0,
                 sources=[],
                 model_used="",
-            ))
-    return results
+            )
+
+    results = await asyncio.gather(*[_run_one(q) for q in body.questions])
+    return list(results)
 
 
 # ── OLD analytics endpoint REMOVED ───────────────────────────────────────────