Handy Shulker

Breaking

• Mod ID renamed from handyshulkers to handyshulker to match the rest of the Handy series convention (singular). Existing config at config/handyshulkers.json is migrated automatically on first launch — no settings lost.
• Internal package moved from dev.handyshulkers to dev.handy.mods.handyshulker. No user-facing impact unless another mod was depending on internal classes.

Bug fixes

• Fixed rare ClassCastException on shulker scroll-extract when another mod constructed an AbstractContainerMenu subclass that loaded before our mixin applied. The cast is now guarded by an instanceof check with a sane fallback.
• Ender chests can now hold ender chest items. The "no nested containers" rule was a copy-paste of the shulker-box rule and didn't actually apply — ender chest items don't carry their own contents, so dropping ender chests into your ender chest is just storing items.

Changes

• Config persistence rebuilt on YACL ConfigClassHandler (matches the rest of the Handy suite). On-disk JSON shape is unchanged; users without YACL installed still run on defaults, and dedicated servers no longer touch any YACL classes at all.
• CI release workflow fixed for prerelease tags — the grep that detects -beta/-alpha/-rc was failing silently because the regex started with -, which both GNU and BSD grep parse as a flag list. The CurseForge upload step is also now gated to stable releases (snapshot betas only ship to Modrinth + GitHub Releases until Overwolf catalogs the MC version).

Internal

• Cleanup wave aligned this mod with the rest of the suite — JAVA_25 mixin compatibility level, full @At descriptors on every inject, FastUtil Int2IntMap on the per-slot selection hot path, deduplicated insert/remove algorithms via a new SlotAccessor interface, mixin renames to reflect their Item.class target, encapsulated mutable globals, narrowed exception handlers, named magic numbers, and a Math.clamp swap for the ender-glow color sweep.