fix: 简化真实采购创建并恢复客户端选择 (#112)

admin/service/service.go

@@ -205,20 +205,25 @@ func ListAssignableClients(db *sql.DB, actor *model.User, threshold time.Duratio
 	return ListClientViewsForUser(db, actor, "", threshold)
 }
 
-// ListLivePurchaseClients 返回当前用户能分配真实采购任务的在线客户端。
-//
-// 页面过滤只用于减少误选；创建任务时仍会在事务内重新校验可见范围和 live 能力。
-func ListLivePurchaseClients(db *sql.DB, actor *model.User, threshold time.Duration) ([]ClientView, error) {
+// PurchaseClientOptions 是采购弹窗的客户端候选和可选数量。
+// 非 live Client 也返回给页面显示禁用原因；创建时仍会在事务内复核能力。
+type PurchaseClientOptions struct {
+	Rows            []ClientView
+	SelectableCount int
+}
+
+// ListPurchaseClientOptions 返回当前用户可见的采购客户端。
+// live Client 即使暂时离线也可提前指派，等它上线后再领取任务。
+func ListPurchaseClientOptions(db *sql.DB, actor *model.User, threshold time.Duration) (*PurchaseClientOptions, error) {
 	clients, err := ListClientViewsForUser(db, actor, "", threshold)
 	if err != nil {
 		return nil, err
 	}
-	result := make([]ClientView, 0, len(clients))
+	result := &PurchaseClientOptions{Rows: clients}
 	for _, client := range clients {
-		if client.Status != "在线" || client.PurchaseMode != string(model.TaskExecutionLive) {
-			continue
+		if client.PurchaseMode == string(model.TaskExecutionLive) {
+			result.SelectableCount++
 		}
-		result = append(result, client)
 	}
 	return result, nil
 }