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对照原型修两点: 1. 菜单原先 over 盖住 side-user 按钮;改为按「菜单估高」把菜单完整弹到按钮上方 留 8px 间隙,触发器始终可见(对齐原型) 2. side-user 抽成 _SideUserTile,加 hover 变色(t.sideHover,与左侧 nav 一致) - user_menu_width_test 增断言:菜单末项底 ≤ 触发器顶(不遮挡) Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01TSKEiHsvauyxYUW2itzUXX