v0.20.20

Fixed

• Accessibility: --module-notes color raised from #CA8A04 (4.08:1) to #A16207 (6.3:1) — now WCAG AA compliant for normal text including nav labels
• Accessibility: Task status button aria-label now reflects actual action — says "mark as open" for completed tasks instead of always "mark as done"
• i18n: Added tasks.markOpen key to all 15 locale files for the corrected aria-label