1.2.1

• Add hotkeyable actions to clear completed calendar tasks, reopen recently completed tasks, and reopen all completed tasks.
• Add matching settings buttons so accidental completions can be fixed without editing plugin data by hand.
• Reopened tasks are moved back into the live calendar task list as unchecked tasks.
• Add sync cache retention so old cache entries self-clean by default after 365 days, with 0 available for a full historical cache.
• Add regression tests for reopen, clear, and cache-pruning behaviour.