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中文：新增移动设备入口、移动 Web 应用元信息、同步诊断面板、无进度超时提示、卡住项目详情、常见恢复动作，以及 curl -I/HEAD 兼容。English: adds mobile device entry, mobile web app metadata, sync diagnosis panel, no-progress timeout warnings, stalled project details, common recovery actions, and curl -I/HEAD compatibility.