* feat(niri): Add drag-and-drop workspace reordering
Add interactive drag-and-drop reordering for Niri workspace indicators
with smooth animations matching the system tray behavior.
- Add moveWorkspaceToIndex() to NiriService for workspace reordering
- Implement drag detection with 5px threshold
- Add shift animation for items between source and target
- Clamp drag offset to stay within workspace row bounds
- Reset drag state when workspace list changes during drag
- Visual feedback: opacity change, border highlight on drag/drop target
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
* feat(settings): Add workspace drag reorder toggle
Add workspaceDragReorder setting to enable/disable workspace
drag-and-drop reordering. Enabled by default, only visible on Niri.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>