- Move new chat button to left side, bookmark button stays on right
- Add max-width constraint (75%) to user messages with proper text wrapping
- Remove right-align text from user message frames (keep bubbles on right)
- Add overflow handling for code blocks in messages
- Change scrollbar color from orange to gray in light and dark modes
- Fix pill loading animation flicker by initializing pinnedAgents from localStorage
- Add 0.2s base delay to pill animations for staggered reveal
- Improve Create new button animation: longer duration (0.6s), bouncy scale sequence, easeInOut easing
