Cool Down Flash

## 0.2.3-beta

- Fixed callbacks accumulating when cooldown widgets are replaced and reused.
- Restored original styling on retired widgets and prevented old callbacks from changing them.
- Reduced work for hidden and empty action buttons.
- Batched action-bar discovery when multiple addons load together.
- Stopped cooldown polling when ready flashes are turned off; native countdown numbers continue normally.
- Improved cooldown completion handling with the current client APIs and legacy cooldown-rate modifiers.
- Fixed availability tracking for single-charge abilities and refreshed state after macro edits.
- Reviewed compatibility with WoW Forever 1.60.1 build 70450; Interface remains 16001.
- Cooldown sounds remain permanently removed.