feat(plugin): 评估量表 WASM 编译通过 — 170KB cdylib 组件

- wasm32-unknown-unknown target 编译成功
- 插件通过 API upload/install 注册，无需手动配置

crates/erp-points/src/event.rs

@@ -0,0 +1,15 @@
+use crate::state::PointsState;
+
+pub const POINTS_EARNED: &str = "points.earned";
+pub const POINTS_EXCHANGED: &str = "points.exchanged";
+pub const POINTS_EXPIRED: &str = "points.expired";
+pub const POINTS_BALANCE_CHANGED: &str = "points.balance.changed";
+
+pub fn register_handlers(_state: PointsState) {
+    // Phase 1: 订阅已有事件（lab_report.uploaded, patient.verified, daily_monitoring.created）
+    // 待 erp-health 发布这些事件后启用消费者
+}
+
+pub fn register_handlers_with_state(state: PointsState) {
+    register_handlers(state);
+}