Time Picker

• Layouts: in a popover (TimePickerTrigger + TimePickerContent), behind a typable field (TimePickerInput, which reads 930, 14h30, 2:30 pm…) or in place (TimePickerPanel). <TimePicker /> alone renders a trigger and a popover.
• Value: @internationalized/date Time objects (value/defaultValue/onChange, null when empty).
• Columns: hourCycle, granularity and periodPosition shape them.
• Choices: hourStep/minuteStep/secondStep, minValue/maxValue (an overnight window when min > max) and isTimeUnavailable narrow them, and a pick moves to the nearest selectable time.
• `requireConfirm`: keeps picks as a draft until OK.
• Keyboard: each column is an aria-activedescendant listbox — arrows, Home/End, PageUp/PageDown and typed digits pick, Left/Right move between columns, Enter commits and closes.
• Forms: name submits HH:mm (or HH:mm:ss) with a native form; isRequired, isInvalid, isReadOnly and isDisabled work as in react-aria.
• `useTimePicker()`: exposes the state inside a picker.

Every string comes from i18n.