v2.51.1

Fixed

• The agenda no longer skips today in silence. It lists only days that hold something, which is
  right for the coming weeks and wrong for the first one: the header announced "From 28 August" and
  the first row was the 29th. The day being asked about went missing precisely when the answer was
  "nothing", and a missing day reads as a loading error rather than a free one. Today now appears
  with a quiet "Nothing planned"; every other empty day stays out, since a list of emptiness helps
  nobody.
• The calendar's view switcher tells assistive technology what it switches. The bar carried
  role="tablist" with four tabs, but there was no role="tabpanel" anywhere in the document and
  no aria-controls - the relationship ended at the tab, and what it changed was nowhere stated.
• The empty-day hint in the day view is no longer cut in half by an hour line. It sat as plain
  text in the time grid, and the next line ran straight through the sentence.