feat: 新增工作流执行模块

新增流程执行记录的实体、DTO、DAO、控制器和服务层，支持工作流的执行、回调及结果树状列表查询；同时更新服务名称为 ai-agent。

workflow/dao/flow/flow_execution_dao.go

@@ -0,0 +1,64 @@
+package flow
+
+import (
+	"ai-agent/workflow/consts/public"
+	flowDto "ai-agent/workflow/model/dto/flow"
+	"ai-agent/workflow/model/entity"
+	"context"
+
+	"gitea.com/red-future/common/db/gfdb"
+	"github.com/gogf/gf/v2/util/gconv"
+)
+
+var FlowExecutionDao = &flowExecutionDao{}
+
+type flowExecutionDao struct{}
+
+// Insert 创建执行记录
+func (d *flowExecutionDao) Insert(ctx context.Context, req *flowDto.CreateFlowExecutionReq) (id int64, err error) {
+	var flowExecution = new(entity.FlowExecution)
+	err = gconv.Struct(req, &flowExecution)
+	if err != nil {
+		return
+	}
+	r, err := gfdb.DB(ctx, public.DbNameBlackDeacon).Model(ctx, public.TableNameFlowExecution).Insert(flowExecution)
+	if err != nil {
+		return
+	}
+	return r.LastInsertId()
+}
+
+func (d *flowExecutionDao) Update(ctx context.Context, req *flowDto.UpdateFlowExecutionReq) (rows int64, err error) {
+	r, err := gfdb.DB(ctx, public.DbNameBlackDeacon).Model(ctx, public.TableNameFlowExecution).OmitEmpty().Data(&req).Where(entity.FlowExecutionCol.Id, req.Id).Update()
+	if err != nil {
+		return
+	}
+	return r.RowsAffected()
+}
+
+func (d *flowExecutionDao) Get(ctx context.Context, req *flowDto.GetFlowExecutionReq, fields ...string) (res *entity.FlowExecution, err error) {
+	r, err := gfdb.DB(ctx, public.DbNameBlackDeacon).Model(ctx, public.TableNameFlowExecution).OmitEmpty().
+		Where(entity.FlowExecutionCol.Id, req.Id).
+		Where(entity.FlowExecutionCol.SessionId, req.SessionId).
+		Fields(fields).One()
+	if err != nil {
+		return
+	}
+	err = r.Struct(&res)
+	return
+}
+
+func (d *flowExecutionDao) List(ctx context.Context, req *flowDto.ListFlowExecutionReq, fields ...string) (res []*entity.FlowExecution, total int, err error) {
+	model := gfdb.DB(ctx, public.DbNameBlackDeacon).Model(ctx, public.TableNameFlowExecution).Fields(fields).OmitEmpty()
+	model.Where(entity.FlowExecutionCol.Creator, req.Creator)
+	model.OrderDesc(entity.FlowExecutionCol.CreatedAt)
+	if req.Page != nil {
+		model.Page(int(req.Page.PageNum), int(req.Page.PageSize))
+	}
+	r, total, err := model.AllAndCount(false)
+	if err != nil {
+		return
+	}
+	err = r.Structs(&res)
+	return
+}