feat: 提现优化 — 取消状态 + 收款方式 + TableName 修复 (HIF-42)

- P04: 修复 Withdrawal.TableName() 返回正确表名 withdrawals
- P03: 新增提现状态常量 (constant/withdrawal.go)，消除魔法数字 0/1/2/3；
       新增 CommissionTypeWithdrawCancel (338) 和 WithdrawalCancelForbidden 错误码
- P02: 迁移 02123 为 withdrawals 表添加 method/account/qr_code_url 列；
       扩展 Withdrawal GORM 模型和 API 类型（CommissionWithdrawRequest、WithdrawalLog）；
       申请提现时增加收款方式校验逻辑
- P01: 新增用户取消提现接口 POST /v1/public/user/withdrawal_cancel；
       仅可取消自己的待审核提现，退还佣金并写佣金日志
- P05: 管理端提现列表新增 method 过滤参数

Co-authored-by: multica-agent <github@multica.ai>

internal/types/types.go

@@ -289,8 +289,11 @@ type CommissionLog struct {
 }
 
 type CommissionWithdrawRequest struct {
-	Amount  int64  `json:"amount"`
-	Content string `json:"content"`
+	Amount    int64  `json:"amount"`
+	Method    uint8  `json:"method"`
+	Account   string `json:"account"`
+	QrCodeUrl string `json:"qr_code_url"`
+	Content   string `json:"content"`
 }
 
 type ConnectionRecords struct {
@@ -2284,11 +2287,16 @@ type QueryWithdrawalLogListResponse struct {
 	Total int64           `json:"total"`
 }
 
+type CancelWithdrawalRequest struct {
+	WithdrawalId int64 `json:"withdrawal_id" validate:"required,gt=0"`
+}
+
 type GetWithdrawalListRequest struct {
 	Page   int    `form:"page"`
 	Size   int    `form:"size"`
 	UserId *int64 `form:"user_id,omitempty"`
 	Status *uint8 `form:"status,omitempty"`
+	Method *uint8 `form:"method,omitempty"`
 }
 
 type GetWithdrawalListResponse struct {
@@ -3604,6 +3612,9 @@ type WithdrawalLog struct {
 	Id        int64  `json:"id"`
 	UserId    int64  `json:"user_id"`
 	Amount    int64  `json:"amount"`
+	Method    uint8  `json:"method"`
+	Account   string `json:"account"`
+	QrCodeUrl string `json:"qr_code_url"`
 	Content   string `json:"content"`
 	Status    uint8  `json:"status"`
 	Reason    string `json:"reason,omitempty"`