feat(payment): 新增「售后策略」配置与前台售后弹窗链路

- 后台「支付&付费 → 售后策略」：售后功能开关、申请时效、超时效提示(HTML)、
  预置原因、申请售后说明、所需材料、申请说明占位文案、可上传图片开关；
  PHP schema 与 SPA schema 1:1 对齐，group 字段支持拖拽排序
- PaymentRuntime 新增售后设置解析（缺键回退 schema 默认、HTML 走 kses、
  中文原因稳定 slug）与 after_sale_expired 时效判定（支付时间起算）
- 售后工单支持举证图片（order_aftersale.images 列，最多 3 张，
  复用评论图片上传校验）与上传路由；订单视图模型输出 after_sale 按钮状态
- 前台申请 / 超时效提示 / 售后详细三个独立弹窗（modal-mini + 蓝色炫彩头），
  订单详情弹窗不再内嵌售后表单并清理相关死代码
- 新增 after-sale-policy 契约测试与运行时 harness，527 项契约测试通过

src/Core/DBMigratorPart2.php

@@ -211,6 +211,7 @@ trait DBMigratorPart2 {
             user_id BIGINT UNSIGNED NOT NULL,
             aftersale_type VARCHAR(24) NOT NULL DEFAULT 'refund',
             reason TEXT NOT NULL,
+            images LONGTEXT DEFAULT NULL,
             refund_amount VARCHAR(32) NOT NULL DEFAULT '0',
             status VARCHAR(20) NOT NULL DEFAULT 'pending',
             admin_note TEXT DEFAULT NULL,

src/Core/ScriptsPart1b.php

@@ -407,6 +407,18 @@ trait ScriptsPart1b {
                             true
                         );
                     }
+
+					// 售后弹窗（申请 / 超时效提示 / 售后详细）：与订单中心同面板、同条件入队。
+					$order_after_sale_js = get_template_directory() . '/assets/js/order-after-sale.js';
+					if (file_exists($order_after_sale_js)) {
+						wp_enqueue_script(
+							'aksrt-order-after-sale',
+							$base_uri . '/assets/js/order-after-sale.js',
+							['loader_js'],
+							(string) filemtime($order_after_sale_js),
+							true
+						);
+					}
                 }
 
                 $identity_js = get_template_directory() . '/assets/js/routes/user-center-auth.js';

src/Core/ScriptsPart1c.php

@@ -498,6 +498,24 @@ trait ScriptsPart1c {
                     'desc'       => (string) ($report['desc'] ?? ''),
                 ];
             })(),
+            // 售后策略数据（order-after-sale.js）：预置原因、所需材料、申请说明与
+            // 占位文案、图片开关、超时效提示均读取后台「支付&付费 → 售后策略」。
+            'afterSale'             => (function () {
+                if (!class_exists('\AKSRT\Settings\PaymentRuntime')) {
+                    return ['enabled' => false, 'reasons' => [], 'materials' => [], 'desc' => '', 'imgEnabled' => false, 'maxImages' => 3, 'reasonPlaceholder' => '', 'expiredText' => ''];
+                }
+                $after_sale = \AKSRT\Settings\PaymentRuntime::get_after_sale_settings();
+                return [
+                    'enabled'           => !empty($after_sale['enabled']),
+                    'reasons'           => array_values((array) ($after_sale['reasons'] ?? [])),
+                    'materials'         => array_values((array) ($after_sale['materials'] ?? [])),
+                    'desc'              => (string) ($after_sale['desc'] ?? ''),
+                    'imgEnabled'        => !empty($after_sale['img_enabled']),
+                    'maxImages'         => 3,
+                    'reasonPlaceholder' => (string) ($after_sale['reason_placeholder'] ?? ''),
+                    'expiredText'       => (string) ($after_sale['expired_text'] ?? ''),
+                ];
+            })(),
             'stickyEnabled'         => class_exists('\AKSRT\Settings\Settings') ? !empty(\AKSRT\Settings\Settings::get_post_list_style_settings()['sticky_s']) : true,
             'stickyPages'           => class_exists('\AKSRT\Settings\Settings') ? \AKSRT\Settings\Settings::get_post_list_style_settings()['sticky_s'] : ['home', 'cat'],
             'badgeShow'             => class_exists('\AKSRT\Settings\Settings') ? !empty(\AKSRT\Settings\Settings::get_post_list_style_settings()['list_badge_show']) : true,