New Features:

• Added an "Echo Purchase Method (Reference)" feature that displays suggested Echo pack combinations based on the required Echo amount
• Added English language support

Bug Fixes:

• Fixed inconsistencies in the Echo calculation logic and unified the calculation rules across all purchase methods
• Fixed issues where calculation results or display errors could occur under certain conditions
• Minor UI adjustments and overall stability improvements

Fixed Issues:

• Significantly fixed pack and child item calculation logic
• Fixed calculation error when switching child items to fragments
• Fixed calculation logic when using discount tickets
• Fixed issue where hidden items affected pack calculations
• Fixed calculation error when switching child items to fragments in AB/AC only cases
• Fixed duplicate calculation issues
• Fixed issue where switching child items to fragments automatically unchecks "Items already owned"
• Fixed issue where child items using discount tickets were treated as "Items already owned"
• Optimized calculation logic priority for more accurate price calculations
• Improved UI so checkboxes are properly disabled in appropriate situations

Added Features:

• Added "Duplicate Item" feature to admin panel
• Auto-fill pack prices based on costume and accessory rarity
• Added "Price Reference Table" to help page
• Added update information page
• Added "Category" and "Shop" filters
• Items can now be hidden
• Added cart button

Fixed Issues:

• Fixed re-rendering bug when selecting categories
• Fixed calculation error for discount-ended items in cart
• Fixed display issues on period list page

Initial version released.