feat: 路子珠显示幸运6/龙7/熊8特殊图标

- DB: cg_number_tab 加 dragon_seven, panda_eight 列
- 后端: OpeningBaccaratService 接收并存储 dragon_seven/panda_eight
- Waybill: showRoad 数据含 luck_six/dragon_seven/panda_eight
- 前端 SoloPath: 绿色圆「6」=幸运6, 金色圆「7」=龙7, 蓝色圆「8」=熊8
- handle_b.js: 键盘7/8设置对应隐藏字段，opening()传参

app/services/opening/OpeningBaccaratService.php

@@ -141,6 +141,8 @@ class OpeningBaccaratService
             $banker_pair = intval($event['banker_pair']);
             $player_pair = intval($event['player_pair']);
             $luck_six = intval($event['luck_six']);
+            $dragon_seven = intval($event['dragon_seven'] ?? 0);
+            $panda_eight = intval($event['panda_eight'] ?? 0);
             //处理开盘
             if($banker_pair == 1 && $player_pair == 2){
                 //庄闲对
@@ -157,7 +159,7 @@ class OpeningBaccaratService
         }
         if (!in_array($opening,[1,2,3])) return ['status' => false, 'msg' => 'opening_fail_3'];
         //开盘
-        $numberTabUpdate = ['result' => $opening, 'pair' => $pair, 'luck_six' => $luck_six, 'big_small' => $big_small, 'end_time' => time(), 'bet_status' => 3];
+        $numberTabUpdate = ['result' => $opening, 'pair' => $pair, 'luck_six' => $luck_six, 'dragon_seven' => $dragon_seven, 'panda_eight' => $panda_eight, 'big_small' => $big_small, 'end_time' => time(), 'bet_status' => 3];
         $newNumberTabInfo = NumberTab::next($numberTabInfo,$numberTabUpdate,$tableInfo);
         if ($newNumberTabInfo){
             $lastNumberTabInfo = array_merge($numberTabInfo,$numberTabUpdate);