bbs-go v4.4.4

bbs-go v4.4.4\n\n1. Route loading reliability：Embed all route chunks, including underscore-prefixed routes, to ensure pages load correctly after packaging.\n2. Deployment experience：Use a dedicated HTTP status for uninstalled sites and add test coverage for the install middleware.\n3. Release packages：Add Linux ARM64 artifacts and a Makefile package target for distributable tarballs.\n4. User experience：Clear the score-ranking cache when an avatar or nickname changes, and refine the Tasks page.\n5. Documentation cleanup：Remove the Contributors section from the README.\n\n1. 路由加载可靠性：嵌入包括下划线路由在内的全部路由资源，确保打包后页面可以正确加载。\n2. 部署体验：为未安装站点使用专用 HTTP 状态，并补充安装中间件测试。\n3. 发布包：新增 Linux ARM64 产物和用于生成分发 tarball 的 Makefile 打包目标。\n4. 用户体验：用户更新头像或昵称时清除积分排行缓存，并优化任务页面。\n5. 文档清理：移除 README 中的 Contributors 区块。