feat(health): 体征增加体温/SpO2/血糖类型字段

- 迁移 079: vital_signs 表新增 body_temperature/spo2/blood_sugar_type 列
- Entity/DTO/Service 全链路支持新字段
- blood_sugar_type: fasting/postprandial/random/ogtt
- daily_monitoring 兼容层补全新字段为 None

crates/erp-server/migration/src/lib.rs

@@ -78,6 +78,7 @@ mod m20260426_000075_create_patient_devices;
 mod m20260426_000076_create_alert_rules;
 mod m20260426_000077_create_alerts;
 mod m20260427_000078_normalize_follow_up_types;
+mod m20260427_000079_add_vital_signs_fields;
 
 pub struct Migrator;
 
@@ -163,6 +164,7 @@ impl MigratorTrait for Migrator {
             Box::new(m20260426_000076_create_alert_rules::Migration),
             Box::new(m20260426_000077_create_alerts::Migration),
             Box::new(m20260427_000078_normalize_follow_up_types::Migration),
+            Box::new(m20260427_000079_add_vital_signs_fields::Migration),
         ]
     }
 }