HelperToFlatpickrFormat Method

Converts a .NET date/time format pattern to a Flatpickr format string. Flatpickr uses its own single-letter tokens (e.g. minutes = 'i', month = 'm'/'n', AM/PM = 'K'), so every token is mapped explicitly. Milliseconds/timezone/era have no Flatpickr token and are dropped.

public static string ToFlatpickrFormat(
	CultureInfo culture,
	string datetimeFormat
)