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上一版用 PopupMenuButton width:218 + offset:-12 反而把菜单外扩、右缘越过侧栏 盖住内容区。改为 GestureDetector + showMenu,菜单宽度 = 用户区实测宽度(自动与 侧栏内容等宽、绝不溢出),底部空间不足 showMenu 自动向上弹、不遮触发器。 加 user_menu_width_test:点开后断言菜单宽≈194、右缘≤218(弹出态回归)。 Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01TSKEiHsvauyxYUW2itzUXX
jiu_client
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