All-day events spanning multiple days were only showing on their start date.
For example, a "Vacation (Dec 20-25)" event would only appear on Dec 20th.
Root cause: Logic only checked events stored in each day's HashMap entry,
missing events that span into other days.
Solution:
- Modified all-day event collection to search all events across all days
- Added event_spans_date() helper function to check if event spans given date
- Properly handles iCalendar dtend convention (day after event ends)
- Added deduplication to prevent duplicate events from multiple day buckets
- Removed unused day_events variable
Result: Multi-day all-day events now correctly appear on every day they span,
while single-day events continue to work as before.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
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