* perf(terminal): smooth layout drags and faster tab switching
Defer xterm refit during split, sidebar, and host-tree drags while keeping pane containers in sync with live layout measurements. Refactor TerminalLayer into focused sections with TabBridge/memo optimizations and add the terminal host tree sidebar.
Co-authored-by: Cursor <cursoragent@cursor.com>
* fix(terminal): keep side panels alive and guard session attach races
Prevent terminal boot unmount from leaking backend sessions, keep SFTP/scripts/theme/AI state when switching side tabs, and defer heavy SFTP UI mount so first entry stays responsive.
Co-authored-by: Cursor <cursoragent@cursor.com>
* perf(terminal): reduce tab switch jank
---------
Co-authored-by: Cursor <cursoragent@cursor.com>
- Add tree view mode alongside existing grid and list views
- Implement hierarchical display of hosts organized by groups
- Add expand/collapse all controls with Chinese translations
- Support all sorting modes (A-Z, Z-A, newest, oldest) in tree view
- Persist expand/collapse state across view switches and app restarts
- Hide Groups section in tree view to avoid duplication
- Display ungrouped hosts at root level instead of "General" group
- Add missing delete group dialog with proper translations
- Maintain full functionality: search, filtering, drag-drop, context menus
Technical changes:
- Create HostTreeView component with TreeNode recursive structure
- Add useTreeExpandedState hook for persistent state management
- Extend ViewMode type to include "tree" option
- Add sortMode prop to enable dynamic sorting in tree structure
- Separate group tree logic for tree view vs other view modes
- Add comprehensive English and Chinese translations
