test(health): 积分系统集成测试 — 12 个测试覆盖 FIFO/签到/兑换/隔离

- 签到积分首次/连续签到
- 自定义事件积分增加
- FIFO 消费、精确消费、部分消费、余额不足
- 账户自动创建、兑换订单创建
- 交易记录查询、租户隔离

crates/erp-server/tests/integration.rs

@@ -14,3 +14,5 @@ mod health_patient_tests;
 mod health_appointment_tests;
 #[path = "integration/health_pii_encryption_tests.rs"]
 mod health_pii_encryption_tests;
+#[path = "integration/health_points_tests.rs"]
+mod health_points_tests;