feat:新增投顾agent和nl2sqlagent

repositories/risk_assessment.py

@@ -1,6 +1,8 @@
 """风评域仓储：风评记录 + 客户画像（画像主键为 customer_id）。"""
 from __future__ import annotations
 
+from datetime import date
+
 from sqlalchemy import select
 
 from model.fin_customer_profile import FinCustomerProfile
@@ -11,6 +13,21 @@ from repositories.base import BaseRepository
 class RiskAssessmentRepo(BaseRepository):
     model = FinRiskAssessment
 
+    async def get_current_by_customer(self, customer_id: int) -> FinRiskAssessment | None:
+        """Return the latest currently valid risk assessment for a customer."""
+        return await self.db.scalar(
+            select(FinRiskAssessment)
+            .where(
+                FinRiskAssessment.customer_id == customer_id,
+                FinRiskAssessment.valid_until >= date.today(),
+            )
+            .order_by(
+                FinRiskAssessment.assessment_date.desc(),
+                FinRiskAssessment.id.desc(),
+            )
+            .limit(1)
+        )
+
 
 class CustomerProfileRepo(BaseRepository):
     """客户画像仓储。注意：主键是 customer_id 而非 id，不适用基类 get(pk)。"""