🔍 Improvement: achievement prizes link to where you use them.
On Achievements, a title or cosmetic prize opens its tab on your Cosmetics page, a hairstyle or skin opens the wardrobe, and a layout opens your theme settings. Item prizes link to the item and show its hover card. Cosmetic prizes say what kind they are, like Avatar Border or Name Plate, and layout prizes show the theme's name instead of a number.

🔍 Improvement: locked cosmetics say which achievement gives them.
On your Cosmetics page, locked borders, backgrounds, reactions and titles now link to the achievement and tier that pays them out, the way name plates already did. Borders, backgrounds and reactions with no way to earn them say Not earnable. Titles don't, since quests give some of those.