Slate Core

• Menus of the Overhaul layout no longer stand empty (no scene, no buttons) beside mods that take part in the game's camera and expect a player to be there. L_Ender's Cataclysm did that on NeoForge.
• YouTube and Spotify links are recognised and their title and picture fetched for Slate Chat's cards (only while link previews are on).
• JPEG pictures show: image links and pasted pictures that are JPEG stayed empty on 1.21.1.
• Interface sounds: clicking through tabs, toggles or lists very fast gives whole, evenly spaced clicks; a click that comes while the last one still sounds is left out instead of cutting it off.

Every Slate module needs the Core of its own version: update all of them together.