feat(pay): 统一收银台四种模式（站内二维码/当前页跳转/表单提交/JSAPI）

- PaymentOrchestrator 统一返回 mode + code_url/payment_url/form_html/jsapi_params
- 支付宝：当面付二维码 / 电脑网站支付 / H5；微信：Native / H5 / JSAPI（WechatOpenid 静默授权）
- 易支付：PC mapi 二维码，移动端自动提交表单
- 删除旧键 alipay_payment_type / wechat_payment_type / epay_device 与 redirect/qr_content 字段
- 新增 pay-cashier.js，移除 window.open，订单状态接口改为 /pay/order/{n}
- 拆分 credits.js（affiliate / withdraw-history）至 1000 行以内

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/Core/ScriptsPart1b.php

@@ -93,6 +93,24 @@ trait ScriptsPart1b {
 			&& class_exists('\AKSRT\Credits\Signin')
 			&& class_exists('\AKSRT\Settings\Settings')
 			&& !empty(\AKSRT\Settings\Settings::get_signin_reward_settings()['enabled']);
+        // 统一收银台（站内二维码 / 当前页跳转 / 表单提交 / JSAPI）：按需作为依赖入队。
+        $qrcode_js_path = get_template_directory() . '/assets/js/vendor/qrcode.min.js';
+        wp_register_script(
+            'aksrt-qrcode',
+            $base_uri . '/assets/js/vendor/qrcode.min.js',
+            [],
+            file_exists($qrcode_js_path) ? (string) filemtime($qrcode_js_path) : $version,
+            true
+        );
+        $pay_cashier_js = get_template_directory() . '/assets/js/pay-cashier.js';
+        wp_register_script(
+            'aksrt-pay-cashier',
+            $base_uri . '/assets/js/pay-cashier.js',
+            ['loader_js', 'aksrt-qrcode'],
+            file_exists($pay_cashier_js) ? (string) filemtime($pay_cashier_js) : $version,
+            true
+        );
+
         $vip_coordinator = get_template_directory() . '/assets/js/vip-purchase-coordinator.js';
         if ((($vip_on && is_user_logged_in()) || $credits_on || $affiliate_on) && file_exists($vip_coordinator)) {
             wp_enqueue_script(
@@ -120,7 +138,7 @@ trait ScriptsPart1b {
                 wp_enqueue_script(
                     'aksrt-pay-vip',
                     $base_uri . '/assets/js/pay-vip.js',
-					['loader_js', 'aksrt-vip-coordinator'],
+					['loader_js', 'aksrt-vip-coordinator', 'aksrt-pay-cashier'],
                     (string) filemtime($vip_js),
                     true
                 );
@@ -407,7 +425,7 @@ trait ScriptsPart1b {
                         wp_enqueue_script(
                             'aksrt-order-center',
                             $base_uri . '/assets/js/order-center.js',
-							['loader_js'],
+							['loader_js', 'aksrt-pay-cashier'],
                             (string) filemtime($order_center_js),
                             true
                         );
@@ -667,7 +685,7 @@ trait ScriptsPart1b {
             wp_enqueue_script(
                 'aksrt-cms-download',
                 $base_uri . '/assets/js/cms-download.js',
-				['loader_js'],
+				['loader_js', 'aksrt-pay-cashier'],
                 file_exists($cms_download_js_path) ? (string) filemtime($cms_download_js_path) : $version,
                 true
             );
@@ -692,28 +710,25 @@ trait ScriptsPart1b {
 
             // profile 页：加载 credits.js（签到 + 邀请 + 提现交互）
             if ($is_profile_page) {
-                $affiliate_deps = [];
-                if ($affiliate_on) {
-                    // 推广二维码生成库（本地打包，无外部 CDN）。
-                    $qrcode_js_path = get_template_directory() . '/assets/js/vendor/qrcode.min.js';
-                    wp_enqueue_script(
-                        'aksrt-qrcode',
-                        $base_uri . '/assets/js/vendor/qrcode.min.js',
-                        [],
-                        file_exists($qrcode_js_path) ? (string) filemtime($qrcode_js_path) : $version,
-                        true
-                    );
-                    $affiliate_deps[] = 'aksrt-qrcode';
-                }
+                // aksrt-pay-cashier 依赖 aksrt-qrcode（推广海报二维码同用）。
                 $credits_js_path = get_template_directory() . '/assets/js/credits.js';
                 wp_enqueue_script(
                     'aksrt-credits',
                     $base_uri . '/assets/js/credits.js',
-					array_merge(['loader_js', 'aksrt-vip-coordinator'], $affiliate_deps),
+					['loader_js', 'aksrt-vip-coordinator', 'aksrt-pay-cashier'],
                     file_exists($credits_js_path) ? (string) filemtime($credits_js_path) : $version,
                     true
                 );
-
+                foreach (['credits-withdraw-history' => ['loader_js']] + ($affiliate_on ? ['credits-affiliate' => ['loader_js', 'aksrt-qrcode']] : []) as $credits_part => $credits_part_deps) {
+                    $credits_part_path = get_template_directory() . '/assets/js/' . $credits_part . '.js';
+                    wp_enqueue_script(
+                        'aksrt-' . $credits_part,
+                        $base_uri . '/assets/js/' . $credits_part . '.js',
+                        $credits_part_deps,
+                        file_exists($credits_part_path) ? (string) filemtime($credits_part_path) : $version,
+                        true
+                    );
+                }
             }
         }