Item Upgrader 1.5.19
- Added MAX to wager all matching stacks of the selected item. Two stacks of 64 can now fund one 128-item wager.
- Added MAX as an option in the Quantities selector.
- Plus/minus and quantity selection now use the combined available amount.
- Multi-slot consumption validates availability before charging and restores changed slots when saving fails.
- Items with different names, enchantments, durability or metadata are kept separate.
- Repeat attempts support matching items spread across multiple stacks.
- Changed only the chance arc to a smooth red-yellow-green color progression based on the real success chance. Original wheel frame and pointer are preserved.
- Preserved item values, probability formula and the existing reward quantity limit of 64.

Chest Upgrade 0.2.9
- Synchronized shared UI definitions with Item Upgrader 1.5.19.
- No chest loot or probability changes.

Validation: multi-stack consumption, partial stacks, metadata separation, insufficient items, save rollback, repeated attempts and losing wagers passed automated checks. JSON, script syntax and package integrity checked. In-game visual and multiplayer tests remain pending.
