WIP - datepicker.js — 3 fixes:

[onewheelskyward]

• Added getPacificToday() using Intl.DateTimeFormat with timeZone: 'America/Los_Angeles', which returns the correct Pacific date regardless of the browser's timezone
• isToday() now compares against the Pacific date instead of the local date
• toUtcString() no longer calls .utc() — converting local-midnight dayjs objects to UTC was shifting dates backward for users east of UTC (e.g., a user clicking "Jan 5" in the calendar would accidentally store Jan 4)
• initDatePicker() now starts from the Pacific "today" date

addevent.js — 1 fix:

• 'hh:mm:ss' → 'HH:mm:ss' in the preview time parser; the lowercase hh is 12-hour format and would misparse afternoon times like "14:30:00", causing the preview to display wrong end times for PM events

main.js — 1 fix:

• Same 'hh:mm:ss' → 'HH:mm:ss' fix for event time display in the calendar list view