收口审计治理与套餐任务进展

Constraint: 在线热修前必须保存当前迭代分支全部有效代码进展
Confidence: medium
Scope-risk: broad
Directive: 后续修改需保持审计事件与业务事务边界一致
Tested: git diff --cached --check
Not-tested: 未运行全量测试，提交用于切换分支前保存既有工作

internal/application/agentrecharge/recharge_audit.go

@@ -0,0 +1,27 @@
+package agentrecharge
+
+import (
+	"context"
+
+	"gorm.io/gorm"
+
+	"github.com/break/junhong_cmp_fiber/internal/model"
+)
+
+// RechargeAudit 描述代理充值申请或资金终态的实际变化。
+type RechargeAudit struct {
+	ActionCode  string
+	Summary     string
+	Record      *model.AgentRechargeRecord
+	Payment     *model.Payment
+	Approval    *model.ApprovalInstance
+	Wallet      *model.AgentWallet
+	Transaction *model.AgentWalletTransaction
+	BeforeData  map[string]any
+	AfterData   map[string]any
+}
+
+// RechargeAuditWriter 在代理充值业务事务内追加统一 Audit Event。
+type RechargeAuditWriter interface {
+	WriteAgentRecharge(ctx context.Context, tx *gorm.DB, change RechargeAudit) error
+}