Add ref_text to the referenced text of the source file

app.py

@@ -367,7 +367,7 @@ def rag_query(query: str, top_k: int = TOP_K_RESULTS) -> dict:
     # Step 4: Return structured response
     return {
         "answer": answer,
-        "sources": [{"source": ctx["source"], "score": ctx["similarity_score"]} for ctx in contexts],
+        "sources": [{"source": ctx["source"], "score": ctx["similarity_score"], "ref_text": ctx["text"]} for ctx in contexts],
         "explanation": explanation,
         "total_token": total_token,
         "run_time_in_ms": elapsed_ms,