backup: 线上最终版本全量备份

包含所有线上运行的改动:
- 荷官端倒计时卡顿修复(CountdownService TTL+10/前端watchdog)
- 停止下注debounce防重复(8个handle.js)
- 洗码量规则重写(单边/双边/开和不计/百家乐+龙虎)
- 龙虎和局不杀庄闲(全额退回)
- 日志系统(Logger工具类/日志查看/清理脚本)
- 好路提醒异常处理(WaybillRemindService try-catch)
- 扫牌器连接改进(ScanConnectService)
- 牛牛/三卡开牌修复
- .gitignore更新/.DS_Store清理

app/utils/Logger.php

@@ -0,0 +1,40 @@
+<?php
+namespace app\utils;
+
+class Logger
+{
+    const CAT_CONNECT  = 'connect';
+    const CAT_GAME     = 'game';
+    const CAT_BET      = 'bet';
+    const CAT_ERROR    = 'error';
+    const CAT_FRONTEND = 'frontend';
+
+    public static function log(string $category, string $level, string $message, array $context = []): void
+    {
+        $date = date('Y-m-d');
+        $time = date('Y-m-d H:i:s');
+        $dir = root_path() . 'runtime' . DIRECTORY_SEPARATOR . 'log' . DIRECTORY_SEPARATOR . $category;
+        if (!is_dir($dir)) {
+            mkdir($dir, 0755, true);
+        }
+        $file = $dir . DIRECTORY_SEPARATOR . $date . '.log';
+        $contextStr = $context ? ' ' . json_encode($context, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES) : '';
+        $line = "[{$time}][{$level}] {$message}{$contextStr}" . PHP_EOL;
+        file_put_contents($file, $line, FILE_APPEND | LOCK_EX);
+    }
+
+    public static function info(string $category, string $message, array $context = []): void
+    {
+        self::log($category, 'INFO', $message, $context);
+    }
+
+    public static function warn(string $category, string $message, array $context = []): void
+    {
+        self::log($category, 'WARN', $message, $context);
+    }
+
+    public static function error(string $category, string $message, array $context = []): void
+    {
+        self::log($category, 'ERROR', $message, $context);
+    }
+}