fix(health): 统一随访类型为 5 种 — phone/outpatient/home_visit/online/wechat

- validation.rs: face_to_face 替换为 outpatient，新增 home_visit/wechat
- FollowUpTaskList.tsx: 新增 online 选项，与后端对齐
- 迁移 078: follow_up_task + follow_up_record face_to_face → outpatient

crates/erp-health/src/service/validation.rs

@@ -82,7 +82,7 @@ pub fn validate_schedule_status(value: &str) -> HealthResult<()> {
 /// follow_up_task.follow_up_type
 pub fn validate_follow_up_type(value: &str) -> HealthResult<()> {
     validate_enum!(value, "follow_up_type", [
-        "phone", "face_to_face", "online",
+        "phone", "outpatient", "home_visit", "online", "wechat",
     ]);
     Ok(())
 }