File Grid View with Virtual Scrolling

Description

Implement a performant grid view for displaying files and folders with thumbnails. Uses virtual scrolling to handle thousands of items efficiently.

Implementation Notes

• Use TanStack Virtual for virtualization
• Grid layout with CSS Grid
• Thumbnail generation via backend
• Selection state management
• Drag and drop support

Acceptance Criteria

• Grid displays files with thumbnails
• Virtual scrolling works smoothly with 10k+ items
• Single-click selection, double-click to open
• Multi-select with Cmd/Ctrl + click
• Range select with Shift + click
• Drag and drop for file operations
• Keyboard navigation (arrow keys)
• Responsive grid (adjusts to window size)