让代理充值复用现有网页支付能力

微信按当前 v2/v3 配置分别生成 MWEB/H5 链接，支付宝复用 C 端 WAP 链接，并让可用支付方式基于生效配置判断。

Constraint: 支付链接统一通过 qr_content 返回，由前端渲染二维码；按要求不运行测试

Rejected: 微信 Native 与支付宝当面付 | 会引入非当前商户配置所需的额外产品开通

Confidence: high

Scope-risk: moderate

Directive: 微信 H5/MWEB 二维码仅承诺系统相机或外部浏览器扫码链路

Tested: 相关 Go 包编译通过；gofmt 与 git diff --check 通过

Not-tested: 按用户要求未运行自动化测试及真实支付联调

internal/handler/admin/agent_recharge.go

@@ -79,7 +79,7 @@ func (h *AgentRechargeHandler) createOnline(c *fiber.Ctx, req dto.CreateAgentRec
 	result, err := h.online.Execute(c.UserContext(), agentrechargeapp.CreateOnlineCommand{
 		AccountID: middleware.GetUserIDFromContext(c.UserContext()), UserType: middleware.GetUserTypeFromContext(c.UserContext()),
 		CurrentShopID: middleware.GetShopIDFromContext(c.UserContext()), Amount: req.Amount,
-		PaymentMethod: req.PaymentMethod, RequestID: req.RequestID,
+		PaymentMethod: req.PaymentMethod, RequestID: req.RequestID, PayerClientIP: c.IP(),
 	})
 	if err != nil {
 		return err