Add reusable MTH_Layout box/column layout engine (api/options-layout.lua) and route every option panel through it (shell, general, zButtons per-button config, zBar, chronometer, auto buy, profiles, credits, etc.) for consistent, auto-sizing layout. Restore realm gate. README note.
- Hunter's Book and options window now show a full 'DISABLED.' overlay on realm-gated realms instead of rendering content
- Pet training: new rank of an already-known ability is now recognised, announced, and reflected in tooltips
- Restore curated 'unique appearance' beast allowlist (34 beasts) in data/init.lua
- CHANGELOG updated