Matcha 1.12 Support with Bundled JEI and Visual Presets — Minecraft 26.2 | Companion 1.2.0

• Added a dedicated Minecraft 26.2 / Matcha Flavoured 1.12 build.
• Generated the catalogue, visual layers and previews from Matcha 1.12, preserving its content before the later death/progression and item-model changes.
• Included bundled JEI with separate browser-visibility and Matcha-catalogue settings.
• Included individual texture controls, required custom-content protection, and personal visual presets with import/export.
• Displayed the exact supported Matcha and Minecraft versions in settings and mod metadata.
• Added a distinct version suffix and pinned datapack dependency for this release.