Theme:
- Export/import themes via UI as <date>_<time>.theme (JSON, readable keys,
link to THEME.md). Import is partial-aware: only present params are written
(server accepts partial); prompts before importing files with unknown params.
- Dynamic favicon + theme-color tinted to the primary colour on load/save.
- New themable colours: general hover-highlight, day hover/selected/bg,
today background, plus two unified sidebar action-icon colours
(inactive/active) covering bell, hide, delete and read-only icons.
- All new colours are per-setting syncable; documented in THEME.md.
UX:
- Styled confirm dialog (#modal-confirm) replaces window.confirm() for
calendar delete and account disconnect.
- Birthday/local calendars and iCal subscriptions can now be hidden from the
sidebar via Settings (new sidebar_hidden column + hide toggle).
Backend: additive nullable columns + idempotent migrations for user_settings
colours and local_calendars/ical_subscriptions.sidebar_hidden.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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