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/php/php.ini

@@ -0,0 +1,44 @@
+# PHP生产环境配置
+
+# 基础设置
+memory_limit = 256M
+max_execution_time = 60
+max_input_time = 60
+post_max_size = 100M
+upload_max_filesize = 100M
+max_file_uploads = 20
+
+# 错误报告（生产环境）
+display_errors = Off
+display_startup_errors = Off
+log_errors = On
+error_log = /var/log/php_errors.log
+error_reporting = E_ALL & ~E_DEPRECATED & ~E_STRICT
+
+# 会话设置
+session.save_handler = redis
+session.save_path = "tcp://redis:6379"
+session.gc_maxlifetime = 1440
+session.cookie_lifetime = 0
+session.cookie_secure = 0
+session.cookie_httponly = 1
+session.use_strict_mode = 1
+
+# OPcache设置
+opcache.enable = 1
+opcache.enable_cli = 1
+opcache.memory_consumption = 128
+opcache.interned_strings_buffer = 8
+opcache.max_accelerated_files = 4000
+opcache.revalidate_freq = 2
+opcache.fast_shutdown = 1
+opcache.validate_timestamps = 0
+
+# 时区设置
+date.timezone = Asia/Shanghai
+
+# 其他设置
+expose_php = Off
+allow_url_fopen = On
+allow_url_include = Off
+default_charset = "UTF-8"