Add remove tag shred preview

Ariver

2026-06-25 c8be92c4ca12b53cec27c39977d2139bea3f0fe7

 src/Apptag/AppGridCollectionView.swift

@@ -564,6 +564,17 @@
        }
    }

    func canPreviewEmptyDrop(path: String, source: String, screenPoint: NSPoint, copy: Bool) -> Bool {
        guard let coordinator,
              coordinator.displayStyle != .flat
        else { return false }
        return !coordinator.shouldCancelEmptyDropForActiveReorder(
            path: path,
            screenPoint: screenPoint,
            copy: copy
        )
    }

    private func setup() {
        wantsLayer = true
        layer?.backgroundColor = NSColor.clear.cgColor