- Catalog page for creating custom prefixes with text, per-letter colors, emoji icon and visual effects
- Emoji picker via @emoji-mart/react with createPortal + Shadow DOM blur fix
- Inventory prefix management (activate/deactivate/delete)
- Chat bubble rendering with multi-color prefix and effect support
- Prefix utilities (getPrefixEffectStyle, parsePrefixColors, PREFIX_EFFECT_KEYFRAMES)
- All UI text in English
- Drag & drop badges between active slots in InfoStand (own user only)
- Mini badge picker on empty slot click with search
- Swap/reorder badges between occupied slots
- Hover animation (scale, glow) on badge slots
- Race condition fix: localChangeRef prevents server response from overwriting local changes
- Fixed-size array logic to prevent badge disappearing on room enter
- Use avatarInfo badges as fallback when hook data not yet loaded