feat: improve metadata handling

app.py

@@ -54,8 +54,8 @@ def retrieve(q, k=3):
     for i in ids:
         chunk = chunks[i]
         meta = metadata_dict[i]
-        docs.append({"title": chunk, "pages": chunk})
-        file_sources.append(meta["source"])
+        docs.append({"title": meta, "pages": chunk})
+        file_sources.append(meta)
     return docs, file_sources
 
 def make_prompt(q, docs, reasoning_mode):