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/handler/public/user/cancelWithdrawalHandler.go

@@ -0,0 +1,25 @@
+package user
+
+import (
+	"github.com/gin-gonic/gin"
+	"github.com/perfect-panel/server/internal/logic/public/user"
+	"github.com/perfect-panel/server/internal/svc"
+	"github.com/perfect-panel/server/internal/types"
+	"github.com/perfect-panel/server/pkg/result"
+)
+
+func CancelWithdrawalHandler(svcCtx *svc.ServiceContext) func(c *gin.Context) {
+	return func(c *gin.Context) {
+		var req types.CancelWithdrawalRequest
+		_ = c.ShouldBind(&req)
+		validateErr := svcCtx.Validate(&req)
+		if validateErr != nil {
+			result.ParamErrorResult(c, validateErr)
+			return
+		}
+
+		l := user.NewCancelWithdrawalLogic(c.Request.Context(), svcCtx)
+		err := l.CancelWithdrawal(&req)
+		result.HttpResult(c, nil, err)
+	}
+}