feat(health): Phase 4 跨模块集成与架构优化 — 通知/标签/待办/数据录入

后端:
- erp-message: 添加 appointment.created/confirmed/cancelled 事件监听，自动发送站内通知
- erp-health: 新增 GET /health/patient-tags 标签列表端点 + list_tags service
- wechat-templates: 添加 isTemplateConfigured 运行时校验

前端:
- 新增 Zustand useHealthStore 共享患者/医生名称缓存
- PatientTagManage: UUID 输入替换为 Checkbox 标签选择器
- VitalSignsTab: 添加体征数据录入 Modal (血压/心率/体重/血糖)
- LabReportsTab: 添加化验报告创建 Modal
- HealthRecordsTab: 添加健康记录创建 Modal
- patients API: 添加 TagItem 类型 + listTags 方法

小程序:
- 首页待办事项接入预约和随访 API，替换硬编码 EmptyState

crates/erp-message/src/module.rs

@@ -195,6 +195,91 @@ async fn handle_workflow_event(
                 .map_err(|e| e.to_string())?;
             }
         }
+        // 预约事件通知
+        "appointment.created" => {
+            let appointment_id = event
+                .payload
+                .get("appointment_id")
+                .and_then(|v| v.as_str())
+                .unwrap_or("unknown");
+            let patient_id = event
+                .payload
+                .get("patient_id")
+                .and_then(|v| v.as_str())
+                .and_then(|s| uuid::Uuid::parse_str(s).ok());
+
+            if let Some(pid) = patient_id {
+                let _ = crate::service::message_service::MessageService::send_system(
+                    event.tenant_id,
+                    pid,
+                    "预约已创建".to_string(),
+                    format!("您的新预约 {} 已创建，请等待确认。", &appointment_id[..8.min(appointment_id.len())]),
+                    "normal",
+                    Some("appointment".to_string()),
+                    uuid::Uuid::parse_str(appointment_id).ok(),
+                    db,
+                    event_bus,
+                )
+                .await
+                .map_err(|e| e.to_string())?;
+            }
+        }
+        "appointment.confirmed" => {
+            let appointment_id = event
+                .payload
+                .get("appointment_id")
+                .and_then(|v| v.as_str())
+                .unwrap_or("unknown");
+            let patient_id = event
+                .payload
+                .get("patient_id")
+                .and_then(|v| v.as_str())
+                .and_then(|s| uuid::Uuid::parse_str(s).ok());
+
+            if let Some(pid) = patient_id {
+                let _ = crate::service::message_service::MessageService::send_system(
+                    event.tenant_id,
+                    pid,
+                    "预约已确认".to_string(),
+                    format!("您的预约 {} 已确认，请按时就诊。", &appointment_id[..8.min(appointment_id.len())]),
+                    "important",
+                    Some("appointment".to_string()),
+                    uuid::Uuid::parse_str(appointment_id).ok(),
+                    db,
+                    event_bus,
+                )
+                .await
+                .map_err(|e| e.to_string())?;
+            }
+        }
+        "appointment.cancelled" => {
+            let appointment_id = event
+                .payload
+                .get("appointment_id")
+                .and_then(|v| v.as_str())
+                .unwrap_or("unknown");
+            let patient_id = event
+                .payload
+                .get("patient_id")
+                .and_then(|v| v.as_str())
+                .and_then(|s| uuid::Uuid::parse_str(s).ok());
+
+            if let Some(pid) = patient_id {
+                let _ = crate::service::message_service::MessageService::send_system(
+                    event.tenant_id,
+                    pid,
+                    "预约已取消".to_string(),
+                    format!("您的预约 {} 已被取消。", &appointment_id[..8.min(appointment_id.len())]),
+                    "normal",
+                    Some("appointment".to_string()),
+                    uuid::Uuid::parse_str(appointment_id).ok(),
+                    db,
+                    event_bus,
+                )
+                .await
+                .map_err(|e| e.to_string())?;
+            }
+        }
         _ => {}
     }
     Ok(())