1.新增游戏实时对局日志，方便排查问题

config/log.php

@@ -51,4 +51,26 @@ return [
             ],
         ],
     ],
+    /**
+     * 游戏实时对局卡住诊断（独立通道）：
+     * - 写入 runtime/logs/game-live-stuck-YYYY-MM-DD.log，保留 7 天
+     * - 由 GameLiveStuckDiagnostic 在 recoverLiveRoundState 后巡检写入
+     * - 字段含 phase（卡住阶段）、db_status、stuck_sec、hint 等，便于 grep
+     */
+    'game_live_stuck' => [
+        'handlers' => [
+            [
+                'class' => Monolog\Handler\RotatingFileHandler::class,
+                'constructor' => [
+                    runtime_path() . '/logs/game-live-stuck.log',
+                    7,
+                    Monolog\Logger::DEBUG,
+                ],
+                'formatter' => [
+                    'class' => Monolog\Formatter\LineFormatter::class,
+                    'constructor' => [null, 'Y-m-d H:i:s', true],
+                ],
+            ],
+        ],
+    ],
 ];