Revert "v7"

This reverts commit 47d9b59d0a218e2a9dbabd06420138122ea78a6b.

app.py

@@ -1050,20 +1050,8 @@ def create_application():
                 else:
                     i += 1
 
-            # Call the agent for this new user question (defensive unpacking)
-            result = await stream_agent_response(question, pair_history)
-            if isinstance(result, tuple) and len(result) == 2:
-                assistant_message, chart_fig = result
-            elif isinstance(result, dict) and "content" in result:
-                assistant_message, chart_fig = result["content"], None
-            elif isinstance(result, str):
-                assistant_message, chart_fig = result, None
-            else:
-                logger.error("stream_agent_response returned unexpected value: %r", result)
-                assistant_message, chart_fig = (
-                    "## ❌ Error\n\nNo se recibió una respuesta válida del agente.",
-                    None,
-                )
+            # Call the agent for this new user question
+            assistant_message, chart_fig = await stream_agent_response(question, pair_history)
 
             # Append assistant message back into messages history
             chat_history.append({"role": "assistant", "content": assistant_message})