feat: Support for Chat Flow & Agent Support for binding a single chat flow (#765)

Co-authored-by: Yu Yang <72337138+tomasyu985@users.noreply.github.com>
Co-authored-by: zengxiaohui <csu.zengxiaohui@gmail.com>
Co-authored-by: lijunwen.gigoo <lijunwen.gigoo@bytedance.com>
Co-authored-by: lvxinyu.1117 <lvxinyu.1117@bytedance.com>
Co-authored-by: liuyunchao.0510 <liuyunchao.0510@bytedance.com>
Co-authored-by: haozhenfei <37089575+haozhenfei@users.noreply.github.com>
Co-authored-by: July <jiangxujin@bytedance.com>
Co-authored-by: tecvan-fe <fanwenjie.fe@bytedance.com>

backend/domain/upload/repository/repository.go

@@ -0,0 +1,39 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package repository
+
+import (
+	"context"
+
+	"gorm.io/gorm"
+
+	"github.com/coze-dev/coze-studio/backend/domain/upload/entity"
+	"github.com/coze-dev/coze-studio/backend/domain/upload/internal/dal/dao"
+)
+
+func NewFilesRepo(db *gorm.DB) FilesRepo {
+	return dao.NewFilesDAO(db)
+}
+
+//go:generate mockgen -destination ../internal/mock/dal/dao/knowledge_document.go --package dao -source knowledge_document.go
+type FilesRepo interface {
+	Create(ctx context.Context, file *entity.File) error
+	BatchCreate(ctx context.Context, files []*entity.File) error
+	Delete(ctx context.Context, id int64) error
+	GetByID(ctx context.Context, id int64) (*entity.File, error)
+	MGetByIDs(ctx context.Context, ids []int64) ([]*entity.File, error)
+}