删除钱包充值功能并消除重复入账风险

钱包充值为开发态测试功能(生产环境本就禁用),且支付回调存在重复入账风险:入账与标记 paid 两步非原子、wallet_ledger 去重无唯一索引、幂等键使用了可变的 ProviderOrderID。直接删除该功能从根本上消除风险。

后端:
- payment 移除 StartWalletRecharge/QueryWalletRecharge 及相关 handler/DTO/常量;confirmPaid 增加 OrderID 守卫;解除对 wallet 仓库的依赖
- wallet 移除 Recharge/ConfirmRechargeFromChannel 及相关定义
- 移除三条充值路由;adminfinance 财务统计口径只统计 order_pay
- 清理充值相关测试用例

前端:
- 移除充值 API、WalletView 充值面板/弹窗、admin 充值标签与筛选
- 保留钱包余额、流水、提现等核心能力

go build/vet 与 vue-tsc typecheck 均通过。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/features/wallet/api/wallet.ts

@@ -2,8 +2,6 @@ import { apiClient } from '@/shared/api/client'
 
 import type { ApiResponse, PaginatedResult } from '@/shared/types/types'
 import type { BalanceType, LedgerDirection, WalletStatus } from '@/shared/types/status'
-import type { PaymentOrder } from '@/features/orders/api/orders'
-import { yuanToCent } from '@/shared/utils/money'
 
 export interface WalletAccount {
   user_id: number
@@ -41,26 +39,3 @@ export async function fetchWalletLedger(page = 1, pageSize = 20) {
   )
   return data.data
 }
-
-export async function rechargeWallet(amountYuan: number) {
-  const amount_cent = yuanToCent(amountYuan)
-  const { data } = await apiClient.post<ApiResponse<WalletAccount>>('/wallet/recharge', {
-    amount_cent,
-  })
-  return data.data
-}
-
-export async function startWalletRechargePayment(amountYuan: number) {
-  const amount_cent = yuanToCent(amountYuan)
-  const { data } = await apiClient.post<ApiResponse<PaymentOrder>>('/wallet/recharge/pay', {
-    amount_cent,
-  })
-  return data.data
-}
-
-export async function queryWalletRechargePayment(id: number) {
-  const { data } = await apiClient.post<ApiResponse<PaymentOrder>>(
-    `/wallet/recharge/pay/${id}/query`
-  )
-  return data.data
-}