Greptile Summary

This PR adds a virtualized file tree for large directory listings. The main changes are:

• Lazy hierarchical directory loading with saved expansion state.
• Recycled rows and dynamic overscan using TanStack Virtual.
• Keyboard navigation and tree accessibility attributes.
• Model-based updates for copy, move, removal, and cut state.
• Serialized FTP operations for stateful connections.

Confidence Score: 5/5

This looks safe to merge.

• The latest changes update every mounted virtual tree and preserve updates for legacy views.
• Virtual rows no longer receive direct DOM mutations when their folders are unloaded.
• No blocking issues remain in the changed synchronization paths.

Important Files Changed

_{Reviews (2): Last reviewed commit: "free" | Re-trigger Greptile}