fix: 加固日历日期与动态错误合同（09-05-error-explainability-payment-readiness，09-08-reimbursement-payment-closeout）

server/tests/unit/routes/assets.validation.test.js

@@ -28,4 +28,13 @@ describe('assets route validation', () => {
       }),
     );
   });
+
+  it.each(['lastVerifiedAt', 'expiresAt', 'activatedAt', 'retiredAt'])('rejects calendar overflow in %s', (field) => {
+    expect(() => assetsRoutes.__testables.parseAssetCreateBodyForTest({ ...validPayload, [field]: '2026-02-30' }))
+      .toThrow();
+    expect(assetsRoutes.__testables.parseAssetCreateBodyForTest({ ...validPayload, [field]: '2024-02-29' })[field])
+      .toBe('2024-02-29');
+    expect(assetsRoutes.__testables.parseAssetCreateBodyForTest({ ...validPayload, [field]: null })[field])
+      .toBeNull();
+  });
 });