diff --git a/cmd/worker/main.go b/cmd/worker/main.go
index 70a513a8..10069d19 100644
--- a/cmd/worker/main.go
+++ b/cmd/worker/main.go
@@ -423,7 +423,9 @@ func registerWeComApprovalOutboxConsumer(runtime *workerRuntime, cfg *config.Con
 		cfg.WeCom.BaseURL, cfg.WeCom.Timeout, appLogger,
 	)
 	consumer := wecomInfra.NewApprovalSubmissionConsumer(
-		wecomInfra.NewApprovalContextRepository(runtime.db, auditWriter),
+		wecomInfra.NewApprovalContextRepository(runtime.db, auditWriter).SetDecisionWriters(
+			approvalInfra.NewTerminalEventWriter(outbox.NewRepository()), approvalInfra.NewDecisionDeliveryStore(runtime.db),
+		),
 		wecomInfra.NewApprovalSubmissionClient(tokenProvider, integrationRepository, cfg.WeCom.BaseURL, cfg.WeCom.Timeout),
 		wecomInfra.NewApprovalAttachmentUploader(tokenProvider, integrationRepository, runtime.storageSvc, cfg.WeCom.BaseURL, cfg.WeCom.Timeout),
 	)
@@ -542,7 +544,9 @@ func registerWeComApprovalTasks(mux *asynq.ServeMux, runtime *workerRuntime, cfg
 		approvalInfra.NewDecisionDeliveryStore(runtime.db), nil,
 	)
 	decisionSync.SetAuditWriter(auditWriter)
-	contexts := wecomInfra.NewApprovalContextRepository(runtime.db, auditWriter)
+	contexts := wecomInfra.NewApprovalContextRepository(runtime.db, auditWriter).SetDecisionWriters(
+		approvalInfra.NewTerminalEventWriter(outbox.NewRepository()), approvalInfra.NewDecisionDeliveryStore(runtime.db),
+	)
 	detailHandler := wecomInfra.NewApprovalDetailTaskHandler(
 		wecomInfra.NewApprovalDetailClient(tokenProvider, integrationRepository, cfg.WeCom.BaseURL, cfg.WeCom.Timeout),
 		contexts, decisionSync, integrationRepository,
diff --git a/internal/infrastructure/approval/terminal_event.go b/internal/infrastructure/approval/terminal_event.go
index 6cbe6168..bb3c0441 100644
--- a/internal/infrastructure/approval/terminal_event.go
+++ b/internal/infrastructure/approval/terminal_event.go
@@ -66,8 +66,11 @@ func (c *TerminalDecisionConsumer) Consume(ctx context.Context, envelope outbox.
 		event.BusinessType == "" || event.BusinessID == 0 || event.CorrelationID == "" {
 		return errors.New(errors.CodeInvalidParam, "审批标准决策事件载荷不完整")
 	}
-	if _, err := approvaldomain.StatusForDecision(event.Decision); err != nil {
-		return err
+	// submission_failed 只由审批核心在提交失败事务内发出，仅在此放行；StatusForDecision 不认该值，渠道回调仍不能推进到提交失败。
+	if event.Decision != constants.ApprovalDecisionSubmissionFailed {
+		if _, err := approvaldomain.StatusForDecision(event.Decision); err != nil {
+			return err
+		}
 	}
 	return c.dispatcher.Consume(ctx, event)
 }
diff --git a/internal/infrastructure/wecom/approval_context_repository.go b/internal/infrastructure/wecom/approval_context_repository.go
index 6706b5d2..ccfbbd00 100644
--- a/internal/infrastructure/wecom/approval_context_repository.go
+++ b/internal/infrastructure/wecom/approval_context_repository.go
@@ -36,9 +36,11 @@ type ApprovalRecoveryRecord struct {
 
 // ApprovalContextRepository 管理企微提交的领取、终态和结果未知状态。
 type ApprovalContextRepository struct {
-	db    *gorm.DB
-	audit approvalapp.AuditWriter
-	now   func() time.Time
+	db             *gorm.DB
+	audit          approvalapp.AuditWriter
+	eventWriter    approvalapp.TerminalEventWriter
+	deliveryWriter approvalapp.DecisionDeliveryWriter
+	now            func() time.Time
 }
 
 // NewApprovalContextRepository 创建企微审批渠道上下文 Repository。
@@ -50,6 +52,14 @@ func NewApprovalContextRepository(db *gorm.DB, audits ...approvalapp.AuditWriter
 	return &ApprovalContextRepository{db: db, audit: audit, now: time.Now}
 }
 
+// SetDecisionWriters 注入提交失败决策所需的投递记录与终态事件写入器。
+// 提交被明确拒绝时必须在同一事务内写两者，缺任何一个都会让业务单永远停在审批中。
+func (r *ApprovalContextRepository) SetDecisionWriters(eventWriter approvalapp.TerminalEventWriter, deliveryWriter approvalapp.DecisionDeliveryWriter) *ApprovalContextRepository {
+	r.eventWriter = eventWriter
+	r.deliveryWriter = deliveryWriter
+	return r
+}
+
 // ClaimSubmission 将待提交上下文原子置为请求处理中，阻止并发或重投重复提单。
 func (r *ApprovalContextRepository) ClaimSubmission(ctx context.Context, instanceID uint) (*ApprovalSubmissionRecord, bool, error) {
 	if r == nil || r.db == nil || instanceID == 0 {
@@ -467,6 +477,10 @@ func (r *ApprovalContextRepository) markSubmissionState(ctx context.Context, ins
 	if r.audit == nil {
 		return errors.New(errors.CodeServiceUnavailable, "通用审批审计 Writer 未配置")
 	}
+	failed := approvalStatus == constants.ApprovalStatusSubmissionFailed
+	if failed && (r.eventWriter == nil || r.deliveryWriter == nil) {
+		return errors.New(errors.CodeServiceUnavailable, "审批提交失败决策写入器未配置")
+	}
 	now := r.now().UTC()
 	return r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
 		contextResult := tx.Model(&model.WeComApprovalContext{}).
@@ -494,6 +508,12 @@ func (r *ApprovalContextRepository) markSubmissionState(ctx context.Context, ins
 		if err != nil {
 			return err
 		}
+		outboxEventID := ""
+		if failed {
+			if outboxEventID, err = r.appendSubmissionFailedDecision(ctx, tx, instance); err != nil {
+				return err
+			}
+		}
 		beforeStatus := constants.ApprovalStatusSubmitting
 		return r.audit.WriteApproval(ctx, tx, approvalapp.AuditChange{
 			EventID:    approvalSubmissionAuditEventID(instanceID, approvalStatus),
@@ -504,11 +524,30 @@ func (r *ApprovalContextRepository) markSubmissionState(ctx context.Context, ins
 			CorrelationID: instance.CorrelationID, BeforeStatus: &beforeStatus, AfterStatus: &approvalStatus,
 			ActorKind: constants.AuditActorSystemTask, ActorID: constants.ApprovalAuditActorSubmissionWorker,
 			Source: constants.AuditSourceWorker, Result: auditResult, ErrorSummary: message,
-			IntegrationIDs: []string{integrationID},
+			IntegrationIDs: []string{integrationID}, OutboxEventID: outboxEventID,
 		})
 	})
 }
 
+// appendSubmissionFailedDecision 在提交失败事务内写决策投递记录与终态事件，通知业务模块终止业务单。
+// 事件号沿用终态决策格式 approval:{实例ID}:submission_failed；失败原因由业务消费者按实例读取企微上下文。
+func (r *ApprovalContextRepository) appendSubmissionFailedDecision(ctx context.Context, tx *gorm.DB, instance *model.ApprovalInstance) (string, error) {
+	event := approvalapp.TerminalDecisionEvent{
+		EventID:    "approval:" + strconv.FormatUint(uint64(instance.ID), 10) + ":" + constants.ApprovalDecisionSubmissionFailed,
+		InstanceID: instance.ID, BusinessType: instance.BusinessType, BusinessID: instance.BusinessID,
+		SubmitterAccountID: instance.SubmitterAccountID, Decision: constants.ApprovalDecisionSubmissionFailed,
+		Source: constants.ApprovalSyncSourceSubmission, CorrelationID: instance.CorrelationID,
+		OccurredAt: instance.StatusChangedAt,
+	}
+	if err := r.deliveryWriter.Create(ctx, tx, event); err != nil {
+		return "", err
+	}
+	if err := r.eventWriter.Append(ctx, tx, event); err != nil {
+		return "", err
+	}
+	return event.EventID, nil
+}
+
 func loadApprovalAuditInstance(ctx context.Context, tx *gorm.DB, instanceID uint) (*model.ApprovalInstance, error) {
 	var instance model.ApprovalInstance
 	if err := tx.WithContext(ctx).First(&instance, instanceID).Error; err != nil {
diff --git a/openspec/changes/fix-august-iteration-export-and-password-hints/tasks.md b/openspec/changes/fix-august-iteration-export-and-password-hints/tasks.md
index 84447631..8693e865 100644
--- a/openspec/changes/fix-august-iteration-export-and-password-hints/tasks.md
+++ b/openspec/changes/fix-august-iteration-export-and-password-hints/tasks.md
@@ -22,5 +22,5 @@
 - [x] 5.1 `gofmt`、`go build ./cmd/api ./cmd/worker`、`go run cmd/gendocs/main.go`。
 - [x] 5.2 按 ENG-TEST-001（测试库 `junhong_cmp_test`、Redis DB 6）：修改密码接口验证四种提示且失败不改密码；七个入口各用 `Abc12345` 成功、`abcd1234` 返回 `1016`、7 位与 13 位返回 `1001`、含空格返回 `1016`；用规则上线前的 6 位旧密码账号登录照常成功。只使用本 Change 自建的测试账号、企业与店铺，验证后清理。
 - [ ] 5.3 通知测试环境前端同步七个入口的密码提示与前端校验（8～12 位、四类至少三类）。
-- [ ] 5.4 测试环境为订单、IoT 卡、设备各建一个导出任务，下载核对新表头、值来源、MB/GB 换算与列数；再用变更前创建的任务验证旧表头与行宽不变；只清理本 Change 自建的任务与对象。
+- [x] 5.4 测试环境为订单、IoT 卡、设备各建一个导出任务，下载核对新表头、值来源、MB/GB 换算与列数；再用变更前创建的任务验证旧表头与行宽不变；只清理本 Change 自建的任务与对象。
 - [ ] 5.5 运行 `openspec validate --all` 与 `./scripts/context-health.sh`。
diff --git a/openspec/changes/fix-august-iteration-follow-up-gaps/tasks.md b/openspec/changes/fix-august-iteration-follow-up-gaps/tasks.md
index e41833f1..cfaf10fe 100644
--- a/openspec/changes/fix-august-iteration-follow-up-gaps/tasks.md
+++ b/openspec/changes/fix-august-iteration-follow-up-gaps/tasks.md
@@ -24,9 +24,9 @@
 ## 5. 文档与测试环境验证
 
 - [x] 5.1 对变更 Go 文件执行 `gofmt`，运行 `go build ./cmd/api ./cmd/worker` 与 `go run cmd/gendocs/main.go`，核对新字段与说明。
-- [ ] 5.2 按 ENG-TEST-001 在 `junhong_cmp_test` 创建并清理专用账号与店铺：用新表头 CSV 验证启用平台账号手机号换绑成功且审计前后值正确；格式不合法、用户名、不存在、非平台、已禁用分别按 delta spec 失败且原负责人不变；旧表头整批失败。
+- [x] 5.2 按 ENG-TEST-001 在 `junhong_cmp_test` 创建并清理专用账号与店铺：用新表头 CSV 验证启用平台账号手机号换绑成功且审计前后值正确；格式不合法、用户名、不存在、非平台、已禁用分别按 delta spec 失败且原负责人不变；旧表头整批失败。
 - [x] 5.3 订单：C 端微信、支付宝已支付及已退款订单三个字段与 `tb_payment` 一致；代理、钱包、线下、未支付为空串；构造“先微信未付、再支付宝已付”订单核对 `payments`；套餐订单与同 ID 充值单不串；列表无逐行查询。
-- [ ] 5.4 预警：规则列表与详情不含 `real_data_mb`，无额度套餐仍被拒；列表与详情 `threshold_mb` 计算正确；新导出任务最后一列为阈值流量，旧任务列序不变。
-- [ ] 5.5 设备导入：混合文件、整份空 IMEI、仅空格、虚拟号与 IMEI 都为空四种情形按 delta spec 核对。
+- [x] 5.4 预警：规则列表与详情不含 `real_data_mb`，无额度套餐仍被拒；列表与详情 `threshold_mb` 计算正确；新导出任务最后一列为阈值流量，旧任务列序不变。
+- [x] 5.5 设备导入：混合文件、整份空 IMEI、仅空格、虚拟号与 IMEI 都为空四种情形按 delta spec 核对。
 - [ ] 5.6 通知测试环境前端去掉 `real_data_mb` 的使用、接入订单新字段；通知运营换新换绑模板、导入须填 IMEI。
 - [ ] 5.7 运行 `openspec validate --all` 与 `./scripts/context-health.sh`。