bugfix: enviar subject para contexto do guardrail

tests/test_transaction_confirmation_customer_facing.py

@@ -0,0 +1,37 @@
+from agent_framework.runtime.agent_runtime import AgentRuntimeMixin
+
+
+def test_cancel_confirmation_uses_subject_and_never_exposes_internal_vas_label():
+    runtime = object.__new__(AgentRuntimeMixin)
+    state = {
+        "transaction_status": "AWAITING_CONFIRMATION",
+        "pending_tool_call": {
+            "tool_name": "cancelar_vas_avulso",
+            "arguments": {"subject": "TIM Fashion"},
+        },
+    }
+
+    text = runtime.transaction_confirmation_message(state)
+
+    assert text == (
+        "Você confirma o cancelamento do serviço TIM Fashion? "
+        "Responda 'sim' para executar ou 'não' para cancelar."
+    )
+    assert "vas avulso" not in text.lower()
+    assert "cancelar_vas_avulso" not in text
+
+
+def test_existing_retail_confirmation_behavior_is_preserved():
+    runtime = object.__new__(AgentRuntimeMixin)
+    state = {
+        "transaction_status": "AWAITING_CONFIRMATION",
+        "pending_tool_call": {
+            "tool_name": "solicitar_devolucao",
+            "arguments": {"order_id": "123"},
+        },
+    }
+
+    assert runtime.transaction_confirmation_message(state) == (
+        "Você confirma a solicitação de devolução para o pedido 123? "
+        "Responda 'sim' para executar ou 'não' para cancelar."
+    )