fix: pipeline visual timeline shows no-data message for USD/XAU instead of BTC history

app.py

@@ -950,11 +950,19 @@ def pipeline_visual_asset(asset):
             for n in nodes:
                 n["status"] = "idle"
 
-        recent_runs = [{
-            "started_at": r["started_at"],
-            "decio_decision": r.get("decio_decision", "?"),
-            "status": r.get("status", "completed")
-        } for r in last_5]
+        # Para USD/XAU, não mostrar histórico BTC — ativo ainda não executou pipeline
+        if asset != 'btc':
+            recent_runs = [{
+                "started_at": "—",
+                "decio_decision": f"Execute o pipeline de {asset_labels.get(asset, asset)} para ver o histórico",
+                "status": "no-data"
+            }]
+        else:
+            recent_runs = [{
+                "started_at": r["started_at"],
+                "decio_decision": r.get("decio_decision", "?"),
+                "status": r.get("status", "completed")
+            } for r in last_5]
 
         return jsonify({"nodes": nodes, "recent_runs": recent_runs, "asset": asset})
     except Exception as e: