Update app.py

app.py

@@ -88,7 +88,7 @@ def call_gpt5_for_metadata(title: str, short_text: str, top_chunks: List[str]) -
         "Top content chunks (short):\n"
     )
     for i, c in enumerate(top_chunks[:6]):
-        prompt += f"CHUNK_{i+1}: {c[:800].replace('\\n',' ')}\n\n"
+        prompt += "CHUNK_{}: {}\n\n".format(i+1, c[:800].replace("\n", " "))
 
     prompt += (
         "Task: Produce a single JSON object (machine parseable) with EXACT keys:\n"