Shop reload keeps deleted shops and items in memory

[CYooBin10]

Labels: medium, bug, configuration, data-consistency

Description

ShopManager.reload() merges file data into the existing in-memory state.

It does not remove shops or items that were deleted from shops.json.

Impact

• Deleted shops remain available in memory.
• Deleted items can remain purchasable until restart.
• Runtime state differs from the configuration file.
• Administrators cannot reliably reload shop configuration.

Expected behavior

Validate the new file and replace the complete in-memory shop state after successful validation.