2.3.11+26.2

* Fixed a crash related to FireFly entity rendering.
* Updated entity renderer registration for Minecraft 26.2.
* Fixed outdated generic type usage in entity movement controls.
* Fixed several potential null-access issues found during the 26.2 port.
* Fixed legacy logic issues in butterfly special-name handling.
* Removed obsolete recipes, advancements and tags referencing unfinished/unregistered items.
* Added build-time validation to prevent deferred content from being packaged accidentally.
* Improved project compatibility with current Fabric Loader / Fabric API versions.
* Cleaned up development-side warnings and VS Code project configuration.

Testing

Tested on Minecraft 26.2 with Fabric.
No further JAIZ-related errors were observed during world loading and initial gameplay testing.