feat(timer): 新增日志每日自动清理定时任务

- New LogClean timer controller (site type, frequency 86400s)
- run_type defaults to auto, only one node cleans per day
- Cleans system_timer_log records older than 30 days

app/tools/controller/timer/LogClean.php

@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+namespace app\tools\controller\timer;
+
+use base\tools\controller\timer\LogCleanBase;
+
+class LogClean extends LogCleanBase
+{
+}

extend/base/common/command/timer/config.php

@@ -14,4 +14,11 @@ return [
         'frequency' => 600,
         'concurrency' => 1,
     ],
+    [
+        'name' => 'timer_log_clean',
+        'type' => 'site',
+        'target' => '/tools/timer.LogClean/do',
+        'frequency' => 86400,
+        'concurrency' => 1,
+    ],
 ];

extend/base/tools/controller/timer/LogCleanBase.php

@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace base\tools\controller\timer;
+
+use app\common\controller\TimerController;
+use think\facade\Db;
+
+class LogCleanBase extends TimerController
+{
+    protected $frequency = 86400;
+
+    public function do()
+    {
+        $days = 30;
+        $threshold = time() - ($days * 86400);
+
+        $count = Db::name('system_timer_log')
+            ->where('create_time', '<', $threshold)
+            ->delete();
+
+        return "已清理 {$count} 条超过 {$days} 天的定时器执行日志。";
+    }
+}