refactor(assets): vendor 资产迁入标准目录并全仓去除 zibll 标识

- assets/vendor 全量迁移: fontawesome5→assets/fontawesome5, css→assets/css,
  js→assets/js/runtime(避开 14 个同名自有文件), img 合并去重→assets/img,
  fonts→assets/fonts; 删除 assets/vendor
- libs 五个与 widgets/third-party 字节相同的库不重复入库, loader paths 改指向
- 运行时切换: _win.uri=assets 根, loader baseUrl=/js/runtime, enlighter 注入
  路径同步; PHP 7 个引用文件切换并改名 $zibll_*→$runtime_*
- 去品牌: Qinver 头注释/品牌 console.log/演示链接清除, 默认文案中性化
- 功能标识符改名: zib__→aksrt__, zib_ajax→aksrt_ajax, window.zib→
  window.aksrtLegacy, zibllblock/*→aksrtblock/*, .zib-widget→.aksrt-panel,
  .zib-slider→.aksrt-slider, zib_menu_options meta 键等
- 自有 CSS 改名: legacy-utilities/compat-vars/footer shell
- admin SPA 重建; 契约测试同步(路径/断言/文件更名)
- 例外保留: tests/visual 对照环境与 fixtures 前缀(外部 Zibll 产品引用)

验证: php -l 133 个改动文件通过; runtime 86 个 JS node --check 通过;
契约测试 68/70(2 个失败经 stash 对照确认为存量问题)

src/Payment/Withdrawal.php

@@ -290,7 +290,7 @@ class Withdrawal {
 			return new \WP_Error('aksrt_withdraw_update', __('提现状态更新失败', 'aksrt'));
 		}
 
-		// Notify user on terminal status (Zibll withdraw_reply parity).
+		// Notify user on terminal status (legacy withdraw_reply parity).
 		if (class_exists('\AKSRT\Messages\Message') && $user_id > 0 && in_array($new_status, [self::STATUS_COMPLETED, self::STATUS_REJECTED], true)) {
 			$gross = $this->resolve_gross_amount($row, $meta);
 			$amount_txt = class_exists('\AKSRT\Credits\Balance') ? \AKSRT\Credits\Balance::format($gross) : number_format($gross, 2);