EnchantmentHelper

Added

• Scrollbars on the applicable-enchant list and the book-order body when content overflows (wheel scrolling unchanged).
• Step detail in the book-order plan: level cost and XP for each step on a second line under the main step text (slightly smaller, indented).

Changed

• Side panel list text uses the same scale as vanilla GUI labels (default font, no extra text scaling on those lists).
• Scrollbar placement respects the inner box border and clearance from the edge; the text column is narrowed by the track width plus a small gap so lines don’t run under the thumb.