fix(api): 修复邮件队列超时并补齐调度进程

延长 SendEmailJob 超时并改为超时直接失败，补充重试退避、
失败日志与收件人脱敏，避免 send_email 队列批量超时重试。

新增 MAIL_TIMEOUT 与 QUEUE_RETRY_AFTER 配置，并抽出邮件运行时
配置与 HTML 内容服务，确保 Horizon 常驻进程使用最新邮件配置。

为 Docker、supervisor 与 compose 样例补齐 scheduler 进程，并在
节点管理端开启墙检测托管时立即触发一次检测，保证定时任务持续生效。

app/Jobs/SendEmailJob.php

@@ -8,6 +8,9 @@ use Illuminate\Contracts\Queue\ShouldQueue;
 use Illuminate\Foundation\Bus\Dispatchable;
 use Illuminate\Queue\InteractsWithQueue;
 use Illuminate\Queue\SerializesModels;
+use Illuminate\Support\Facades\Log;
+use RuntimeException;
+use Throwable;
 
 class SendEmailJob implements ShouldQueue
 {
@@ -15,7 +18,8 @@ class SendEmailJob implements ShouldQueue
     protected $params;
 
     public $tries = 3;
-    public $timeout = 10;
+    public $timeout = 60;
+    public $failOnTimeout = true;
 
     /**
      * Create a new job instance.
@@ -33,7 +37,7 @@ class SendEmailJob implements ShouldQueue
      *
      * @return void
      */
-    public function handle()
+    public function handle(): void
     {
         $params = $this->params;
         if (
@@ -46,9 +50,55 @@ class SendEmailJob implements ShouldQueue
             $params['template_value']['content'] = (string) $params['template_value']['content'] . "\r\n\r\n[Send-Time: {$timestamp}]";
         }
 
-        $mailLog = MailService::sendEmail($params);
+        $mailLog = $this->sendEmail($params);
         if ($mailLog['error']) {
-            $this->release(60);
+            throw new RuntimeException('Failed to send email: ' . $mailLog['error']);
         }
     }
+
+    /**
+     * Return retry delays for transient mail delivery failures.
+     */
+    public function backoff(): array
+    {
+        return [60, 300];
+    }
+
+    /**
+     * Record a failed send attempt without exposing the full recipient address.
+     */
+    public function failed(Throwable $exception): void
+    {
+        Log::error('Send email job failed', [
+            'queue' => $this->queue,
+            'email' => $this->maskedEmail(),
+            'error' => $exception->getMessage(),
+        ]);
+    }
+
+    /**
+     * Send the email payload.
+     */
+    protected function sendEmail(array $params): array
+    {
+        return MailService::sendEmail($params);
+    }
+
+    /**
+     * Return a partially masked recipient address for operational logs.
+     */
+    private function maskedEmail(): ?string
+    {
+        $email = $this->params['email'] ?? null;
+        if (!is_string($email) || !str_contains($email, '@')) {
+            return null;
+        }
+
+        [$local, $domain] = explode('@', $email, 2);
+        if ($local === '' || $domain === '') {
+            return null;
+        }
+
+        return substr($local, 0, 1) . str_repeat('*', max(1, strlen($local) - 1)) . '@' . $domain;
+    }
 }