feat(health): 批量随访操作 — batch_create/assign/complete 三个端点

POST /health/follow-up-tasks/batch-create — 多患者同配置批量创建
POST /health/follow-up-tasks/batch-assign — 批量分配负责人
POST /health/follow-up-tasks/batch-complete — 批量标记完成

含参数校验（上限 100）、部分失败报告、事件发布、审计日志。

crates/erp-health/src/handler/follow_up_handler.rs

@@ -13,6 +13,79 @@ use crate::dto::DeleteWithVersion;
 use crate::service::follow_up_service;
 use crate::state::HealthState;
 
+// ---------------------------------------------------------------------------
+// 批量操作 Handler
+// ---------------------------------------------------------------------------
+
+pub async fn batch_create_tasks<S>(
+    State(state): State<HealthState>,
+    Extension(ctx): Extension<TenantContext>,
+    Json(req): Json<BatchCreateTasksReq>,
+) -> Result<Json<ApiResponse<BatchResultResp>>, AppError>
+where
+    HealthState: FromRef<S>,
+    S: Clone + Send + Sync + 'static,
+{
+    require_permission(&ctx, "health.follow-up.manage")?;
+    if req.patient_ids.is_empty() {
+        return Err(AppError::Validation("patient_ids 不能为空".to_string()));
+    }
+    if req.patient_ids.len() > 100 {
+        return Err(AppError::Validation("单次批量最多 100 条".to_string()));
+    }
+    let result = follow_up_service::batch_create_tasks(
+        &state, ctx.tenant_id, Some(ctx.user_id), req,
+    )
+    .await?;
+    Ok(Json(ApiResponse::ok(result)))
+}
+
+pub async fn batch_assign_tasks<S>(
+    State(state): State<HealthState>,
+    Extension(ctx): Extension<TenantContext>,
+    Json(req): Json<BatchAssignReq>,
+) -> Result<Json<ApiResponse<BatchResultResp>>, AppError>
+where
+    HealthState: FromRef<S>,
+    S: Clone + Send + Sync + 'static,
+{
+    require_permission(&ctx, "health.follow-up.manage")?;
+    if req.task_ids.is_empty() {
+        return Err(AppError::Validation("task_ids 不能为空".to_string()));
+    }
+    if req.task_ids.len() > 100 {
+        return Err(AppError::Validation("单次批量最多 100 条".to_string()));
+    }
+    let result = follow_up_service::batch_assign_tasks(
+        &state, ctx.tenant_id, Some(ctx.user_id), req,
+    )
+    .await?;
+    Ok(Json(ApiResponse::ok(result)))
+}
+
+pub async fn batch_complete_tasks<S>(
+    State(state): State<HealthState>,
+    Extension(ctx): Extension<TenantContext>,
+    Json(req): Json<BatchCompleteReq>,
+) -> Result<Json<ApiResponse<BatchResultResp>>, AppError>
+where
+    HealthState: FromRef<S>,
+    S: Clone + Send + Sync + 'static,
+{
+    require_permission(&ctx, "health.follow-up.manage")?;
+    if req.task_ids.is_empty() {
+        return Err(AppError::Validation("task_ids 不能为空".to_string()));
+    }
+    if req.task_ids.len() > 100 {
+        return Err(AppError::Validation("单次批量最多 100 条".to_string()));
+    }
+    let result = follow_up_service::batch_complete_tasks(
+        &state, ctx.tenant_id, Some(ctx.user_id), req,
+    )
+    .await?;
+    Ok(Json(ApiResponse::ok(result)))
+}
+
 #[derive(Debug, Deserialize, IntoParams)]
 pub struct FollowUpTaskListParams {
     pub page: Option<u64>,