8b75be6e14
- P04: fix Withdrawal.TableName() to return 'withdrawals' - P03: add WithdrawalStatus* and WithdrawalMethod* constants; replace magic numbers; add CommissionTypeWithdrawCancel=338 - P01: add POST /v1/public/user/withdrawal_cancel to cancel pending withdrawals with ownership check, row lock, commission refund, and audit log - P02: add method/account/qr_code_url fields to Withdrawal model and API; add input validation (qr_code_url required for Alipay/Wechat, account required for bank) - P05: add method filter to admin GET /v1/admin/user/withdrawal/list Co-authored-by: multica-agent <github@multica.ai>