- Overlapping timed events in week/day views now render side-by-side using a column-layout algorithm
- Calendar events support optional file attachments (images, PDFs, documents up to 5 MB)
- Attachment images shown in event popup; other files as download links
- Birthday modal redesigned with photo/avatar side-by-side with name/date fields
- DB migration 27: adds attachment_name, attachment_mime, attachment_size, attachment_data columns to calendar_events
- Server-side MIME allowlist and size validation for attachments
- i18n: all 15 locales include new attachment keys (de properly translated)
Co-Authored-By: Rafael Foster <rafaelfoster@users.noreply.github.com>
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Ulas Kalayci
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