feat: 新增 Docker 部署支持、Swoole/Octane 集成及相关优化

- 添加 Dockerfile 与多套 docker-compose 配置（开发/生产环境）
- 集成 Laravel Octane (Swoole) 提升性能
- 新增健康检查、监控脚本及部署文档
- 新增 Docker 镜像离线导入包（MySQL/Redis/Meilisearch）
- 优化文档转换、预览服务及队列任务
- 添加 CreateAdminUser 命令与路由健康检查接口
- 新增 Swoole 队列兼容性测试套件

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docker/supervisor/supervisord.conf

@@ -0,0 +1,45 @@
+# Supervisor配置文件 - Swoole版本
+
+[supervisord]
+nodaemon=true
+user=root
+logfile=/var/log/supervisor/supervisord.log
+pidfile=/var/run/supervisord.pid
+childlogdir=/var/log/supervisor/
+
+[unix_http_server]
+file=/var/run/supervisor.sock
+chmod=0700
+
+[supervisorctl]
+serverurl=unix:///var/run/supervisor.sock
+
+[rpcinterface:supervisor]
+supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface
+
+# Swoole HTTP服务器 (Laravel Octane)
+[program:swoole]
+command=php /var/www/html/artisan octane:start --host=0.0.0.0 --port=8000 --workers=4
+autostart=true
+autorestart=true
+startretries=5
+numprocs=1
+startsecs=0
+process_name=%(program_name)s_%(process_num)02d
+stderr_logfile=/var/log/supervisor/%(program_name)s_stderr.log
+stderr_logfile_maxbytes=10MB
+stdout_logfile=/var/log/supervisor/%(program_name)s_stdout.log
+stdout_logfile_maxbytes=10MB
+user=www-data
+
+# Laravel队列处理器
+[program:laravel-worker]
+command=php /var/www/html/artisan queue:work --sleep=3 --tries=3 --max-time=3600
+autostart=true
+autorestart=true
+startretries=5
+numprocs=1
+redirect_stderr=true
+stdout_logfile=/var/log/supervisor/laravel-worker.log
+stopwaitsecs=3600
+user=www-data