Bug fixes and improvements for Mar 5th
- Fixed attachment deletion issues when switching teams
- Improved settings modal layout and removed double borders
- Added diff/code tab toggle with hover-expand functionality
- Added chevron indicators to project and branch selectors
- Added project screenshot previews on hover in project selector
- Added summary header to diff tab showing file changes
- Improved design mode with better tooltips and functionality
- Fixed duplicate branch creation when duplicating chats




