docs: rewrite wiki for 3.122.0 Correct versions (1.21 - 26.2), commands (createshop) and the full permission list. Add pages: Updating, Selling and Quick Sell, Command Items, Sign Shops. Document adding items from your inventory in the GUI, full item data (NBT) matching, and the tested version table. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_015xZhGjK3eq9JzxZV5hnBHx