1.3.1 - 2026-07-20

Fixed

• Date input's calendar icon was invisible in dark mode; added
  color-scheme so the browser renders native date-picker controls
  to match the active theme

Changed

• Footer's Dark/Light and Clear Completed links reduced to 50% of
  their previous size
• CHKT credit line in the footer ("CHKT: A stupidly simple todo
  list, sorted by due date.") now bold