feat(workflow): 增加工作流计费与执行生命周期管理

- 新增计费模块：执行开始建单、终态结算/取消/失败处理，支持按条/按秒/按token计费
- 新增执行生命周期跟踪：优雅关停时取消运行中执行并等待落库
- 新增异步任务等待/通知机制（Wait/Notify）
- 重构执行记录落库与进度上报，统一失败分类与重试语义
- 重命名文件：async_task.go→async.go、flow_checkpoint_store.go→exec_checkpoint.go、flow_graph_util.go→exec_record.go
- 更新 .gitignore 与数据库密码配置

workflow/model/entity/exec_workflow.go

@@ -9,6 +9,7 @@ import (
 // ExecWorkflow 执行工作流
 type ExecWorkflow struct {
 	beans.SQLBaseDO `orm:",inherit"`
+	UserId          int64                    `orm:"user_id" json:"userId" description:"执行用户ID（数字，恢复续跑补 X-User-Info 用；creator 是 userName）"`
 	SessionId       string                   `orm:"session_id" json:"sessionId" description:"会话ID"`
 	FlowId          int64                    `orm:"flow_id" json:"flowId" description:"工作流ID"`
 	NodeGroupId     string                   `orm:"node_group_id" json:"nodeGroupId" description:"节点组ID"`
@@ -17,15 +18,18 @@ type ExecWorkflow struct {
 	Status          flow.FlowExecutionStatus `orm:"status" json:"status" description:"状态:1-运行中,2-成功,3-失败"`
 	TotalTokens     int                      `orm:"total_tokens" json:"totalTokens" description:"总token消耗"`
 	TotalFee        float64                  `orm:"total_fee" json:"totalFee" description:"总费用"`
+	ActualAmount    float64                  `orm:"actual_amount" json:"actualAmount" description:"业务扣费（用户钱包实际扣除金额，元；结算/取消回填实收，失败/未结算=0，区别于 total_fee=模型按次费用合计）"`
 	ErrorMessage    string                   `orm:"error_message" json:"errorMessage" description:"错误信息（友好提示）"`
 	Error           string                   `orm:"error" json:"error" description:"错误明细（原始错误）"`
-	Retryable       int                      `orm:"retryable" json:"retryable" description:"是否可重试:0-用户取消,1-程序报错"`
+	Retryable       int                      `orm:"retryable" json:"retryable" description:"是否可重试:0-终局不重试(用户取消/计费门禁拦截),1-可重试(程序报错/关停中断/超时等)"`
 	RetryCount      int                      `orm:"retry_count" json:"retryCount" description:"已重试次数"`
+	ChargeOrderId   int64                    `orm:"charge_order_id" json:"chargeOrderId" description:"关联计费单ID（shop-user-trade pricing，0=未建单）"`
 	LastHeartbeat   int64                    `orm:"last_heartbeat" json:"lastHeartbeat" description:"最后心跳时间（毫秒时间戳）"`
 }
 
 type execWorkflowCol struct {
 	beans.SQLBaseCol
+	UserId        string
 	SessionId     string
 	FlowId        string
 	NodeGroupId   string
@@ -34,15 +38,18 @@ type execWorkflowCol struct {
 	Status        string
 	TotalTokens   string
 	TotalFee      string
+	ActualAmount  string
 	ErrorMessage  string
 	Error         string
 	Retryable     string
 	RetryCount    string
+	ChargeOrderId string
 	LastHeartbeat string
 }
 
 var ExecWorkflowCol = execWorkflowCol{
 	SQLBaseCol:    beans.DefSQLBaseCol,
+	UserId:        "user_id",
 	SessionId:     "session_id",
 	FlowId:        "flow_id",
 	NodeGroupId:   "node_group_id",
@@ -51,9 +58,11 @@ var ExecWorkflowCol = execWorkflowCol{
 	Status:        "status",
 	TotalTokens:   "total_tokens",
 	TotalFee:      "total_fee",
+	ActualAmount:  "actual_amount",
 	ErrorMessage:  "error_message",
 	Error:         "error",
 	Retryable:     "retryable",
 	RetryCount:    "retry_count",
+	ChargeOrderId: "charge_order_id",
 	LastHeartbeat: "last_heartbeat",
 }