[NoltoxGit]

Changes

zEssentials still compiled against a checked-in zMenu implementation JAR for item persistence and sound creation. Upgrade zmenu-api to 1.1.2.1 and use the published API for these remaining integrations, removing the binary from the repository and simplifying dependency maintenance.

• Remove libs/zMenu-1.1.2.0.jar, its Gradle file dependencies and the local-library JAR ignore exception.
• Use InventoryManager#serializeItemStack and deserializeItemStack for mailbox items, vault contents and icons, and item holograms. Existing constructors and the stored item format are preserved.
• Use InventoryManager#createSoundOption for teleportation and chat ping sounds. Preserve resource-pack sounds with a small SoundOption implementation that plays their string keys through Paper: the zMenu factory currently returns null for names it cannot resolve.
• Update the changelog to document the API migration and zMenu 1.1.2.1+ runtime requirement.

Validation

• Clean compilation and shaded builds of the plugin, API and Discord bot passed, including all supported NMS modules.
• Every zMenu import resolves from the published API artifact; the built plugin and API JARs contain no bundled zMenu classes.
• 34 checks passed on each of Paper 1.21.4 / Java 21 and Paper 26.3 / Java 25, using the released zMenu 1.1.2.1 JAR.
• Generated persisted item fixtures with the previous local zMenu JAR, then verified their metadata and quantities through the new API, mailbox DTOs, vaults and item holograms. Also checked API round trips, null items, vanilla/custom sound settings, custom playback arguments and disabled sounds.

Runtime checks used local Paper servers and simulated players for sound playback; audible in-game verification remains to be done.