Add 7.9 app ordering support

Ariver

2026-06-11 a1ade5e8426d9cccd3c59f692d6fab55e67021fa

 src/Apptag/AppDragCoordinator.swift

@@ -131,6 +131,7 @@
            dragLayer.position = contentPoint
            CATransaction.commit()
            updateHoverTarget(at: screenPoint)
            hoveredTarget?.appDragLocationChanged(screenPoint: screenPoint, copy: currentCopyMode)
            return
        }

@@ -144,6 +145,7 @@
        )
        dragWindow.setFrameOrigin(origin)
        updateHoverTarget(at: screenPoint)
        hoveredTarget?.appDragLocationChanged(screenPoint: screenPoint, copy: currentCopyMode)
    }

    func finishDrag(at screenPoint: NSPoint, copy: Bool) {
@@ -151,10 +153,17 @@
        let parts = activePayload.components(separatedBy: "\n")
        guard let path = parts.first, !path.isEmpty else { return }
        let source = parts.dropFirst().first ?? ""
        let sourceContainerID = parts.dropFirst(2).first ?? ""
        pruneDeadTargets()

        if let hitTarget = dropTarget(at: screenPoint) {
            hitTarget.performDrop(path: path, source: source, copy: copy)
            hitTarget.appDragLocationChanged(screenPoint: screenPoint, copy: copy)
            hitTarget.performDrop(
                path: path,
                source: source,
                sourceContainerID: sourceContainerID,
                copy: copy
            )
            return
        }

@@ -282,7 +291,9 @@
protocol AppDropTargetReceivingView: AnyObject {
    func screenFrame() -> NSRect?
    func appDragHoverChanged(active: Bool)
    func appDragLocationChanged(screenPoint: NSPoint, copy: Bool)
    func performDrop(path: String, source: String, copy: Bool)
    func performDrop(path: String, source: String, sourceContainerID: String, copy: Bool)
}

protocol AppEmptyDropReceivingView: AnyObject {
@@ -300,6 +311,10 @@

extension AppDropTargetReceivingView {
    func appDragHoverChanged(active: Bool) {}
    func appDragLocationChanged(screenPoint: NSPoint, copy: Bool) {}
    func performDrop(path: String, source: String, sourceContainerID: String, copy: Bool) {
        performDrop(path: path, source: source, copy: copy)
    }
}

extension AppEmptyDropReceivingView where Self: NSView {