### Added
- Start the week on any day. The **Week starts on** setting (Settings →
  Appearance) now offers every weekday — not just Monday or Sunday — alongside
  the automatic, locale-based default. Thanks to @zmaherdev for the suggestion
  ([#3]).
- Choose a 12- or 24-hour clock. A new **Time format** setting (Settings →
  Appearance) lets you force a 12-hour (2:00 PM) or 24-hour (14:00) clock, or
  follow the system setting automatically. It applies everywhere times appear —
  the week and day timelines, agenda, event details, search and reminders — so
  the format is now consistent across the whole app. Thanks to @zmaherdev for
  the suggestion ([#6]).
- Optional hour lines in the timeline. A new **Hour lines** switch (Settings →
  Appearance) draws a faint separator at each hour in the week and day views,
  making it easier to see when events start and end. Off by default. Thanks to
  @zmaherdev for the suggestion ([#5]).
- Limit how far ahead the agenda looks, and switch it on the fly. New **Agenda
  range** and **Agenda widget range** settings (Settings → Appearance) let the
  agenda screen and its home-screen widget each show just today, the rest of this
  week, the rest of this month, a rolling 7 or 30 days, or a custom number of
  days — "This week" follows your week-start. The agenda also gains a bar at the
  top naming the exact dates in view, with a button to switch the range just for
  the current session (it resets when you reopen the app); the bar can be turned
  off. Thanks to @zmaherdev for the suggestion ([#4]).

### Changed
- Tidied **Settings → Appearance** into clearer groups (theme & colour, calendar,
  agenda), and the agenda's empty state now reads "You're all caught up".