fix(sms): accept empty HTTP 200 responses

src/Admin/UserControllerAuthPhoneOperations.php

@@ -501,7 +501,7 @@ trait UserControllerAuthPhoneOperations {
 		}
 		$result = \AKSRT\Sms\SMS::get_instance()->test_send($phone);
 		return !empty($result['success'])
-			? $this->success(['message' => __('测试短信已发送', 'aksrt')])
+			? $this->success(['message' => (string) ($result['message'] ?? __('测试短信已发送', 'aksrt'))])
 			: $this->error((string) ($result['message'] ?? __('测试短信发送失败', 'aksrt')));
 	}
 }

src/Sms/SMSProviderSmsbao.php

@@ -52,8 +52,8 @@ class SMSProviderSmsbao implements ProviderInterface {
 		$body = trim((string) wp_remote_retrieve_body($response));
 		if ($body === '') {
 			return [
-				'success' => false,
-				'message' => sprintf(__('短信宝接口返回空响应（HTTP %d），请检查服务器到 api.smsbao.com 的 HTTPS 连接，并查看短信宝后台发送记录。', 'aksrt'), $status),
+				'success' => true,
+				'message' => sprintf(__('短信宝请求已提交（HTTP %d，响应正文为空）。', 'aksrt'), $status),
 				'transport' => 'smsbao_http',
 			];
 		}