feat(health): appointment list API 内联 patient_name/doctor_name

列表查询后批量获取 patient 和 doctor 名称，消除前端 N+1 请求。
DTO 新增 patient_name/doctor_name Option 字段，向后兼容。

crates/erp-health/src/dto/appointment_dto.rs

@@ -38,6 +38,8 @@ pub struct AppointmentResp {
     pub id: Uuid,
     pub patient_id: Uuid,
     pub doctor_id: Option<Uuid>,
+    pub patient_name: Option<String>,
+    pub doctor_name: Option<String>,
     pub appointment_type: String,
     pub appointment_date: NaiveDate,
     pub start_time: NaiveTime,

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

@@ -14,6 +14,7 @@ use erp_core::types::PaginatedResponse;
 use crate::dto::appointment_dto::*;
 use crate::entity::{appointment, doctor_profile, doctor_schedule, patient};
 use crate::error::{HealthError, HealthResult};
+use std::collections::{HashMap, HashSet};
 use crate::service::validation::{
     validate_appointment_status_transition, validate_appointment_type,
     validate_period_type, validate_schedule_status,
@@ -54,9 +55,41 @@ pub async fn list_appointments(
         .all(&state.db)
         .await?;
 
+    // 批量查询 patient_name 和 doctor_name
+    let patient_ids: HashSet<Uuid> = models.iter().map(|m| m.patient_id).collect();
+    let doctor_ids: HashSet<Uuid> = models.iter().filter_map(|m| m.doctor_id).collect();
+
+    let patient_names: HashMap<Uuid, String> = if !patient_ids.is_empty() {
+        patient::Entity::find()
+            .filter(patient::Column::Id.is_in(patient_ids))
+            .filter(patient::Column::TenantId.eq(tenant_id))
+            .all(&state.db)
+            .await?
+            .into_iter()
+            .map(|p| (p.id, p.name))
+            .collect()
+    } else {
+        HashMap::new()
+    };
+
+    let doctor_names: HashMap<Uuid, String> = if !doctor_ids.is_empty() {
+        doctor_profile::Entity::find()
+            .filter(doctor_profile::Column::Id.is_in(doctor_ids))
+            .filter(doctor_profile::Column::TenantId.eq(tenant_id))
+            .all(&state.db)
+            .await?
+            .into_iter()
+            .map(|d| (d.id, d.name))
+            .collect()
+    } else {
+        HashMap::new()
+    };
+
     let total_pages = total.div_ceil(limit.max(1));
     let data = models.into_iter().map(|m| AppointmentResp {
         id: m.id, patient_id: m.patient_id, doctor_id: m.doctor_id,
+        patient_name: patient_names.get(&m.patient_id).cloned(),
+        doctor_name: m.doctor_id.and_then(|did| doctor_names.get(&did).cloned()),
         appointment_type: m.appointment_type, appointment_date: m.appointment_date,
         start_time: m.start_time, end_time: m.end_time,
         status: m.status, cancel_reason: m.cancel_reason, notes: m.notes,
@@ -81,6 +114,7 @@ pub async fn get_appointment(
 
     Ok(AppointmentResp {
         id: m.id, patient_id: m.patient_id, doctor_id: m.doctor_id,
+        patient_name: None, doctor_name: None,
         appointment_type: m.appointment_type, appointment_date: m.appointment_date,
         start_time: m.start_time, end_time: m.end_time,
         status: m.status, cancel_reason: m.cancel_reason, notes: m.notes,
@@ -189,6 +223,7 @@ pub async fn create_appointment(
 
     Ok(AppointmentResp {
         id: m.id, patient_id: m.patient_id, doctor_id: m.doctor_id,
+        patient_name: None, doctor_name: None,
         appointment_type: m.appointment_type, appointment_date: m.appointment_date,
         start_time: m.start_time, end_time: m.end_time,
         status: m.status, cancel_reason: m.cancel_reason, notes: m.notes,
@@ -280,6 +315,7 @@ pub async fn update_appointment_status(
 
     Ok(AppointmentResp {
         id: m.id, patient_id: m.patient_id, doctor_id: m.doctor_id,
+        patient_name: None, doctor_name: None,
         appointment_type: m.appointment_type, appointment_date: m.appointment_date,
         start_time: m.start_time, end_time: m.end_time,
         status: m.status, cancel_reason: m.cancel_reason, notes: m.notes,