TreasureRun v0.1.4-alpha — Treasure Shop quickstart sync

This alpha follow-up release keeps the Treasure Shop player quickstart in sync with the recent secret-trade and Special Emerald cost configuration updates.

Highlights

• Special Emerald diamond cost is now configurable through craftSpecialEmerald.requiredDiamonds.
• Treasure Shop secret-trade quickstart steps now match the current implementation.
• The player quickstart now checks for Special Emerald consumption and the Golden Apple reward being added to the player's inventory.
• The old slot-based Treasure Shop wording has been removed from docs/playtest/PLAYER_QUICKSTART.md.
• This helps reduce tester confusion before the next round of playtesting feedback.

Context

• Builds on the follow-up work tracked in #23.
• Follows the Treasure Shop secret-trade update in #92 and the Special Emerald cost configuration update in #93.
• Documentation sync completed in #94.

Boundary

This is still an alpha-stage Spigot 1.20.1 project, not a production-ready release.
This release does not change ResourcePack files, Fabric behavior, database migrations, or GitHub Actions.

Special Thanks

• @boriskole — for contributing the focused Special Emerald cost configuration update in #93, and for the quick follow-up on review feedback.