new feature: mcp pre-validation

templates/agent_template_backend/app/main.py

@@ -461,6 +461,7 @@ async def _process_gateway_message(req: GatewayRequest, emit_sse: bool = False)
                     "mcp_tools": result.get("mcp_tools"),
                     "mcp_results": result.get("mcp_results"),
                     "transaction_evidence": result.get("relevant_transaction_evidence", []),
+                    "transaction_pre_validation": result.get("transaction_pre_validation"),
                     "business_context": business_context.model_dump(),
                     "identity_missing": missing_identity_keys,
                     "judges": result.get("judge_results"),

templates/agent_template_backend/app/state.py

@@ -27,6 +27,7 @@ class AgentState(TypedDict, total=False):
     selected_tool_call: dict[str, Any]
     pending_tool_call: dict[str, Any]
     transaction_status: str
+    transaction_pre_validation: dict[str, Any]
     transaction_evidence: list[dict[str, Any]]
     last_transaction_evidence: dict[str, Any]
     relevant_transaction_evidence: list[dict[str, Any]]