Build a notification boundaries setup with Tailwind CSS: a working-hours picker per weekday (start, end, timezone-aware) with an 'always notify for' exceptions row where critical events bypass quiet hours, and a preview strip showing the visitor's local time against the quiet window. Validate that at least one channel stays reachable for critical events, and make the whole setup skippable with sane defaults.
提示词保持英文原文——直接粘贴进 Claude、Cursor、v0 或任何 AI 编程工具即可使用。