Remove non-source materials from source worktree

Ariver

2026-06-30 4c6f31c43a03ecb5a85ffb6a3ea3905a661af0f4

 src/Apptag/AppGridCollectionView.swift

@@ -1,5 +1,6 @@
import SwiftUI
import AppKit
import Carbon.HIToolbox

fileprivate enum AppGridCollectionDisplayMode: Equatable {
    case flat
@@ -27,18 +28,38 @@

    static let externalInteraction = AppGridBubbleSuppressionReasons(rawValue: 1 << 0)
    static let scroll = AppGridBubbleSuppressionReasons(rawValue: 1 << 1)
    static let usageTipsHover = AppGridBubbleSuppressionReasons(rawValue: 1 << 2)
}

struct AppGridUsageTip: Equatable {
    let id: Int
    let titleKey: String
    let detailKey: String
}

enum AppGridUsageTipsMetrics {
    static let barHeight: CGFloat = 154
    static let reservedHeight: CGFloat = 194
    static let bottomMargin: CGFloat = 20
    static let horizontalInset: CGFloat = 24
    static let minWidth: CGFloat = 640
}

struct AppGridCollectionView: NSViewRepresentable {
    let groups: [TagGroup]
    let tagColors: [String: Int]
    let tagCustomColors: [String: TagCustomColor]
    let displayMode: String
    let iconSize: CGFloat
    let showNames: Bool
    let appGridTheme: AppGridTheme
    let bubbleDisabled: Bool
    let showUncommonAppBubbles: Bool
    let highlightedGroupName: String?
    let bottomContentPadding: CGFloat
    let usageTipsVisible: Bool
    let usageTips: [AppGridUsageTip]
    @Binding var selectedUsageTipIndex: Int
    let contentRevision: Int
    let scrollTargetID: String?
    let scrollRequestToken: Int
@@ -51,6 +72,8 @@
    let onGroupActivate: (String) -> Void
    let onScrollActivity: () -> Void
    let onDragModeChange: (Bool) -> Void
    let onHideUsageTips: () -> Void
    let onUsageTipsHoverChange: (Bool) -> Void

    func makeCoordinator() -> Coordinator {
        Coordinator()
@@ -63,16 +86,22 @@
    }

    func updateNSView(_ view: AppGridCollectionHostView, context: Context) {
        let selectedUsageTipIndexBinding = $selectedUsageTipIndex
        context.coordinator.update(
            groups: groups,
            tagColors: tagColors,
            tagCustomColors: tagCustomColors,
            displayMode: displayMode,
            iconSize: iconSize,
            showNames: showNames,
            appGridTheme: appGridTheme,
            bubbleDisabled: bubbleDisabled,
            showUncommonAppBubbles: showUncommonAppBubbles,
            highlightedGroupName: highlightedGroupName,
            bottomContentPadding: bottomContentPadding,
            usageTipsVisible: usageTipsVisible,
            usageTips: usageTips,
            selectedUsageTipIndex: selectedUsageTipIndex,
            contentRevision: contentRevision,
            scrollTargetID: scrollTargetID,
            scrollRequestToken: scrollRequestToken,
@@ -84,7 +113,10 @@
            onReorderApps: onReorderApps,
            onGroupActivate: onGroupActivate,
            onScrollActivity: onScrollActivity,
            onDragModeChange: onDragModeChange
            onDragModeChange: onDragModeChange,
            onHideUsageTips: onHideUsageTips,
            onUsageTipIndexChange: { selectedUsageTipIndexBinding.wrappedValue = $0 },
            onUsageTipsHoverChange: onUsageTipsHoverChange
        )
        view.applyCoordinatorUpdate()
    }
@@ -92,14 +124,20 @@
    final class Coordinator: NSObject, NSCollectionViewDataSource, NSCollectionViewDelegate {
        var groups: [TagGroup] = []
        var tagColors: [String: Int] = [:]
        var tagCustomColors: [String: TagCustomColor] = [:]
        var displayMode = AppDefaults.displayMode
        var iconSize: CGFloat = AppDefaults.iconSize
        var showNames = true
        var appGridTheme = AppGridTheme.fallback
        private var externalBubbleDisabled = false
        private var scrollBubbleDisabled = false
        var showUncommonAppBubbles = AppDefaults.showUncommonAppBubbles
        var highlightedGroupName: String?
        var bottomContentPadding: CGFloat = 0
        var usageTipsVisible = false
        var usageTips: [AppGridUsageTip] = []
        var selectedUsageTipIndex = 0
        private var usageTipsBubbleDisabled = false
        var contentRevision = 0
        var scrollTargetID: String?
        var scrollRequestToken = 0
@@ -116,6 +154,9 @@
        var onGroupActivate: (String) -> Void = { _ in }
        var onScrollActivity: () -> Void = {}
        var onDragModeChange: (Bool) -> Void = { _ in }
        var onHideUsageTips: () -> Void = {}
        var onUsageTipIndexChange: (Int) -> Void = { _ in }
        var onUsageTipsHoverChange: (Bool) -> Void = { _ in }

        private weak var activeReorderCard: AppGridGroupCardView?
        private var activeDragPath = ""
@@ -126,13 +167,18 @@
        func update(
            groups: [TagGroup],
            tagColors: [String: Int],
            tagCustomColors: [String: TagCustomColor],
            displayMode: String,
            iconSize: CGFloat,
            showNames: Bool,
            appGridTheme: AppGridTheme,
            bubbleDisabled: Bool,
            showUncommonAppBubbles: Bool,
            highlightedGroupName: String?,
            bottomContentPadding: CGFloat,
            usageTipsVisible: Bool,
            usageTips: [AppGridUsageTip],
            selectedUsageTipIndex: Int,
            contentRevision: Int,
            scrollTargetID: String?,
            scrollRequestToken: Int,
@@ -144,17 +190,25 @@
            onReorderApps: @escaping (String, [String]) -> Void,
            onGroupActivate: @escaping (String) -> Void,
            onScrollActivity: @escaping () -> Void,
            onDragModeChange: @escaping (Bool) -> Void
            onDragModeChange: @escaping (Bool) -> Void,
            onHideUsageTips: @escaping () -> Void,
            onUsageTipIndexChange: @escaping (Int) -> Void,
            onUsageTipsHoverChange: @escaping (Bool) -> Void
        ) {
            self.groups = groups
            self.tagColors = tagColors
            self.tagCustomColors = tagCustomColors
            self.displayMode = displayMode
            self.iconSize = iconSize
            self.showNames = showNames
            self.appGridTheme = appGridTheme
            self.externalBubbleDisabled = bubbleDisabled
            self.showUncommonAppBubbles = showUncommonAppBubbles
            self.highlightedGroupName = highlightedGroupName
            self.bottomContentPadding = max(0, bottomContentPadding)
            self.usageTipsVisible = usageTipsVisible && !usageTips.isEmpty
            self.usageTips = usageTips
            self.selectedUsageTipIndex = Self.clampedUsageTipIndex(selectedUsageTipIndex, tips: usageTips)
            self.contentRevision = contentRevision
            self.scrollTargetID = scrollTargetID
            self.scrollRequestToken = scrollRequestToken
@@ -167,12 +221,20 @@
            self.onGroupActivate = onGroupActivate
            self.onScrollActivity = onScrollActivity
            self.onDragModeChange = onDragModeChange
            self.onHideUsageTips = onHideUsageTips
            self.onUsageTipIndexChange = onUsageTipIndexChange
            self.onUsageTipsHoverChange = onUsageTipsHoverChange
            if !self.usageTipsVisible {
                usageTipsBubbleDisabled = false
            }

            let nextSignature = Self.signature(
                tagColors: tagColors,
                tagCustomColors: tagCustomColors,
                displayMode: displayMode,
                iconSize: iconSize,
                showNames: showNames,
                appGridTheme: appGridTheme,
                showUncommonAppBubbles: showUncommonAppBubbles,
                bottomContentPadding: self.bottomContentPadding,
                contentRevision: contentRevision
@@ -231,6 +293,9 @@
            if scrollBubbleDisabled {
                reasons.insert(.scroll)
            }
            if usageTipsBubbleDisabled {
                reasons.insert(.usageTipsHover)
            }
            return reasons
        }

@@ -243,6 +308,22 @@
            guard scrollBubbleDisabled != disabled else { return false }
            scrollBubbleDisabled = disabled
            return true
        }

        @discardableResult
        func setUsageTipsBubbleDisabled(_ disabled: Bool) -> Bool {
            guard usageTipsBubbleDisabled != disabled else { return false }
            usageTipsBubbleDisabled = disabled
            return true
        }

        func selectUsageTip(offset: Int) {
            guard !usageTips.isEmpty else { return }
            let count = usageTips.count
            let nextIndex = (selectedUsageTipIndex + offset + count) % count
            guard nextIndex != selectedUsageTipIndex else { return }
            selectedUsageTipIndex = nextIndex
            onUsageTipIndexChange(nextIndex)
        }

        fileprivate func beginAppIconDrag(path: String, sourceContainerID: String) {
@@ -326,9 +407,11 @@

        private static func signature(
            tagColors: [String: Int],
            tagCustomColors: [String: TagCustomColor],
            displayMode: String,
            iconSize: CGFloat,
            showNames: Bool,
            appGridTheme: AppGridTheme,
            showUncommonAppBubbles: Bool,
            bottomContentPadding: CGFloat,
            contentRevision: Int
@@ -337,15 +420,33 @@
                .sorted { $0.key < $1.key }
                .map { "\($0.key)=\($0.value)" }
                .joined(separator: ",")
            let customColorPart = tagCustomColors
                .sorted { $0.key < $1.key }
                .map { "\($0.key)=\($0.value.signature)" }
                .joined(separator: ",")
            return [
                displayMode,
                "\(Int(iconSize.rounded()))",
                showNames ? "names" : "nonames",
                "theme=\(appGridTheme.rawValue)",
                showUncommonAppBubbles ? "uncommon" : "allbubbles",
                "bottom=\(Int(bottomContentPadding.rounded()))",
                colorPart,
                customColorPart,
                "rev=\(contentRevision)"
            ].joined(separator: "|")
        }

        func tagColor(for groupName: String) -> NSColor {
            TagColor.nsColor(
                for: tagColors[groupName] ?? 0,
                customColor: tagCustomColors[groupName]
            )
        }

        private static func clampedUsageTipIndex(_ index: Int, tips: [AppGridUsageTip]) -> Int {
            guard !tips.isEmpty else { return 0 }
            return min(max(0, index), tips.count - 1)
        }
    }
}
@@ -365,12 +466,16 @@
    private let scrollView = AppGridScrollView()
    private let collectionView = NSCollectionView()
    private let gridLayout = AppGridContainerCollectionLayout()
    private let usageTipsShieldView = AppGridUsageTipsShieldView()
    private let usageTipsView = AppGridUsageTipsNSView()
    private weak var coordinator: AppGridCollectionView.Coordinator?
    private var scrollObserver: NSObjectProtocol?
    private var lastLayoutSize: NSSize = .zero
    private var lastReportedBoundsOrigin: NSPoint?
    private var scrollUnfreezeWorkItem: DispatchWorkItem?
    private var scrollActivityIsActive = false
    private var usageTipsEventRegionIsClaimed = false
    private var usageTipsMouseMonitor: Any?

    override var isFlipped: Bool { true }

@@ -388,6 +493,7 @@
        if let scrollObserver {
            NotificationCenter.default.removeObserver(scrollObserver)
        }
        removeUsageTipsMouseMonitor()
        scrollUnfreezeWorkItem?.cancel()
        coordinator?.cancelAppIconDrag()
        AppDragCoordinator.shared.unregisterEmptyDropTarget(id: emptyDropTargetID)
@@ -396,12 +502,14 @@
    func configure(coordinator: AppGridCollectionView.Coordinator) {
        self.coordinator = coordinator
        gridLayout.coordinator = coordinator
        usageTipsView.coordinator = coordinator
        collectionView.dataSource = coordinator
        collectionView.delegate = coordinator
    }

    func applyCoordinatorUpdate() {
        guard let coordinator else { return }
        applyAppearance()
        if coordinator.needsReload {
            coordinator.needsReload = false
            collectionView.reloadData()
@@ -422,11 +530,14 @@
                }
            }
        }
        usageTipsView.applyCoordinatorState()
        positionUsageTipsView()
    }

    override func layout() {
        super.layout()
        scrollView.frame = bounds
        positionUsageTipsView()
        if lastLayoutSize != bounds.size {
            lastLayoutSize = bounds.size
            gridLayout.invalidateLayout()
@@ -436,12 +547,23 @@
    override func viewDidMoveToWindow() {
        super.viewDidMoveToWindow()
        if window == nil {
            removeUsageTipsMouseMonitor()
            AppDragCoordinator.shared.cancelDrag()
            coordinator?.cancelAppIconDrag()
            AppDragCoordinator.shared.unregisterEmptyDropTarget(id: emptyDropTargetID)
        } else {
            installUsageTipsMouseMonitor()
            AppDragCoordinator.shared.registerEmptyDropTarget(id: emptyDropTargetID, view: self)
        }
    }

    override func hitTest(_ point: NSPoint) -> NSView? {
        if !usageTipsView.isHidden,
           usageTipsView.frame.contains(point) {
            let tipsPoint = usageTipsView.convert(point, from: self)
            return usageTipsView.hitTest(tipsPoint) ?? usageTipsView
        }
        return super.hitTest(point)
    }

    func performEmptyDrop(path: String, source: String, screenPoint: NSPoint, copy: Bool) {
@@ -459,6 +581,17 @@
        DispatchQueue.main.async {
            coordinator.onDropOutsideGroup(path, source, copy)
        }
    }

    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() {
@@ -480,6 +613,16 @@
        scrollView.borderType = .noBorder
        scrollView.documentView = collectionView
        addSubview(scrollView)
        usageTipsShieldView.isHidden = true
        usageTipsShieldView.onClaim = { [weak self] in
            self?.claimUsageTipsEventRegion()
        }
        usageTipsShieldView.onRelease = { [weak self] in
            self?.releaseUsageTipsEventRegion()
        }
        usageTipsView.isHidden = true
        addSubview(usageTipsShieldView, positioned: .above, relativeTo: scrollView)
        addSubview(usageTipsView, positioned: .above, relativeTo: usageTipsShieldView)

        scrollView.contentView.postsBoundsChangedNotifications = true
        scrollObserver = NotificationCenter.default.addObserver(
@@ -492,6 +635,70 @@
            else { return }
            self.handleScrollActivity()
        }
    }

    private func positionUsageTipsView() {
        guard let coordinator,
              coordinator.usageTipsVisible
        else {
            usageTipsView.isHidden = true
            usageTipsShieldView.isHidden = true
            usageTipsView.clearHoverState()
            releaseUsageTipsEventRegion()
            usageTipsView.frame = .zero
            usageTipsShieldView.frame = .zero
            return
        }

        let inset = min(AppGridUsageTipsMetrics.horizontalInset, max(0, bounds.width / 4))
        let availableWidth = max(1, bounds.width - inset * 2)
        let width = usageTipsView.preferredWidth(maxAvailableWidth: availableWidth)
        let height = AppGridUsageTipsMetrics.barHeight
        usageTipsShieldView.isHidden = false
        usageTipsShieldView.frame = usageTipsEventRegion()
        usageTipsView.configureVisualLayout(
            width: width,
            height: height,
            bottomMargin: AppGridUsageTipsMetrics.bottomMargin
        )
        usageTipsView.isHidden = false
        usageTipsView.frame = usageTipsEventRegion()
    }

    fileprivate func relayoutUsageTipsAfterContentChange() {
        positionUsageTipsView()
        usageTipsView.needsLayout = true
    }

    private func usageTipsEventRegion() -> NSRect {
        guard let coordinator,
              coordinator.usageTipsVisible
        else { return .zero }
        let height = min(bounds.height, AppGridUsageTipsMetrics.reservedHeight)
        return NSRect(
            x: 0,
            y: max(0, bounds.height - height),
            width: bounds.width,
            height: height
        )
    }

    private func claimUsageTipsEventRegion() {
        usageTipsEventRegionIsClaimed = true
        window?.makeFirstResponder(usageTipsView)
        if coordinator?.setUsageTipsBubbleDisabled(true) == true {
            refreshVisibleRuntimeState()
        }
        coordinator?.onUsageTipsHoverChange(true)
    }

    private func releaseUsageTipsEventRegion() {
        guard usageTipsEventRegionIsClaimed else { return }
        usageTipsEventRegionIsClaimed = false
        if coordinator?.setUsageTipsBubbleDisabled(false) == true {
            refreshVisibleRuntimeState()
        }
        coordinator?.onUsageTipsHoverChange(false)
    }

    private func handleScrollActivity() {
@@ -527,6 +734,62 @@
        }
    }

    fileprivate func refreshVisibleRuntimeStateForUsageTips() {
        refreshVisibleRuntimeState()
    }

    func handleUsageTipsMouseDown(_ event: NSEvent) -> Bool {
        handleUsageTipsMouseEvent(event, triggerButtons: true)
    }

    private func handleUsageTipsMouseEvent(_ event: NSEvent, triggerButtons: Bool) -> Bool {
        let point = usageTipsHostPoint(for: event)
        guard !usageTipsView.isHidden,
              usageTipsView.frame.contains(point)
        else { return false }

        return usageTipsView.handleMouseEventFromHost(event, triggerButtons: triggerButtons)
    }

    private func installUsageTipsMouseMonitor() {
        guard usageTipsMouseMonitor == nil else { return }
        usageTipsMouseMonitor = NSEvent.addLocalMonitorForEvents(
            matching: [
                .leftMouseDown,
                .leftMouseUp,
                .rightMouseDown,
                .rightMouseUp,
                .otherMouseDown,
                .otherMouseUp
            ]
        ) { [weak self] event in
            guard let self,
                  self.window != nil,
                  self.handleUsageTipsMouseEvent(
                    event,
                    triggerButtons: event.type == .leftMouseDown
                  )
            else { return event }
            return nil
        }
    }

    private func usageTipsHostPoint(for event: NSEvent) -> NSPoint {
        if event.window === window {
            return convert(event.locationInWindow, from: nil)
        }
        guard let window else { return .zero }
        let windowPoint = window.convertPoint(fromScreen: NSEvent.mouseLocation)
        return convert(windowPoint, from: nil)
    }

    private func removeUsageTipsMouseMonitor() {
        if let usageTipsMouseMonitor {
            NSEvent.removeMonitor(usageTipsMouseMonitor)
            self.usageTipsMouseMonitor = nil
        }
    }

    private func replayPointerHover() {
        guard let window else { return }
        let windowPoint = window.convertPoint(fromScreen: NSEvent.mouseLocation)
@@ -547,6 +810,934 @@
        }
        return didScroll
    }

    private func applyAppearance() {
        let usesDarkGlass = coordinator?.appGridTheme.usesDarkGlass == true
        layer?.backgroundColor = NSColor.clear.cgColor
        collectionView.appearance = usesDarkGlass ? NSAppearance(named: .darkAqua) : nil
    }
}

private final class AppGridUsageTipsShieldView: NSView {
    var onClaim: (() -> Void)?
    var onRelease: (() -> Void)?

    private var trackingAreaRef: NSTrackingArea?

    override var isFlipped: Bool { true }
    override var acceptsFirstResponder: Bool { false }
    override var mouseDownCanMoveWindow: Bool { false }

    override func acceptsFirstMouse(for event: NSEvent?) -> Bool {
        true
    }

    override func updateTrackingAreas() {
        super.updateTrackingAreas()
        if let trackingAreaRef {
            removeTrackingArea(trackingAreaRef)
        }
        let area = NSTrackingArea(
            rect: .zero,
            options: [.mouseEnteredAndExited, .mouseMoved, .activeAlways, .inVisibleRect],
            owner: self,
            userInfo: nil
        )
        addTrackingArea(area)
        trackingAreaRef = area
    }

    override func hitTest(_ point: NSPoint) -> NSView? {
        guard !isHidden, bounds.contains(point) else { return nil }
        onClaim?()
        return self
    }

    override func mouseEntered(with event: NSEvent) { onClaim?() }
    override func mouseMoved(with event: NSEvent) { onClaim?() }
    override func mouseDragged(with event: NSEvent) { onClaim?() }
    override func mouseExited(with event: NSEvent) { onRelease?() }
    override func mouseDown(with event: NSEvent) {
        Diagnostics.log("usageTips.shield.mouseDown")
        onClaim?()
    }
    override func mouseUp(with event: NSEvent) {}
    override func rightMouseDown(with event: NSEvent) { onClaim?() }
    override func rightMouseUp(with event: NSEvent) {}
    override func otherMouseDown(with event: NSEvent) { onClaim?() }
    override func otherMouseUp(with event: NSEvent) {}
    override func scrollWheel(with event: NSEvent) { onClaim?() }
}

private final class AppGridUsageTipsNSView: NSView {
    weak var coordinator: AppGridCollectionView.Coordinator?

    private let backgroundView = NSVisualEffectView()
    private let titlePanelView = NSView()
    private let iconView = AppGridDecorativeImageView()
    private let titleLabel = NSTextField(labelWithString: "")
    private let detailScrollView = NSScrollView()
    private let detailLabel = NSTextField(labelWithString: "")
    private let closeButton = AppGridUsageTipIconButton(systemImage: "xmark")
    private let previousButton = AppGridUsageTipIconButton(systemImage: "chevron.left")
    private let nextButton = AppGridUsageTipIconButton(systemImage: "chevron.right")
    private let dotsView = AppGridUsageTipDotsView()
    private var trackingAreaRef: NSTrackingArea?
    private var isPointerInside = false
    private var visualWidth: CGFloat = AppGridUsageTipsMetrics.minWidth
    private var visualHeight: CGFloat = AppGridUsageTipsMetrics.barHeight
    private var visualBottomMargin: CGFloat = AppGridUsageTipsMetrics.bottomMargin
    private var currentDetailText = ""

    private let titleFont = NSFont.systemFont(ofSize: 25, weight: .bold)
    private let detailFont = NSFont.systemFont(ofSize: 24, weight: .medium)

    override var isFlipped: Bool { true }
    override var acceptsFirstResponder: Bool { true }
    override var mouseDownCanMoveWindow: Bool { false }

    override init(frame frameRect: NSRect) {
        super.init(frame: frameRect)
        setup()
    }

    required init?(coder: NSCoder) {
        super.init(coder: coder)
        setup()
    }

    override func acceptsFirstMouse(for event: NSEvent?) -> Bool {
        true
    }

    override func viewDidMoveToWindow() {
        super.viewDidMoveToWindow()
        if window == nil {
            clearHoverState()
        }
    }

    override func updateTrackingAreas() {
        super.updateTrackingAreas()
        if let trackingAreaRef {
            removeTrackingArea(trackingAreaRef)
        }
        let area = NSTrackingArea(
            rect: .zero,
            options: [.mouseEnteredAndExited, .mouseMoved, .activeAlways, .inVisibleRect],
            owner: self,
            userInfo: nil
        )
        addTrackingArea(area)
        trackingAreaRef = area
    }

    override func hitTest(_ point: NSPoint) -> NSView? {
        guard !isHidden, bounds.contains(point) else { return nil }
        setPointerInside(true)
        let hitView = super.hitTest(point)
        if hitView == nil || hitView === backgroundView || hitView?.isDescendant(of: backgroundView) == true {
            return self
        }
        return hitView
    }

    override func mouseEntered(with event: NSEvent) {
        claimInteractionFocus()
    }

    override func mouseMoved(with event: NSEvent) {
        claimInteractionFocus()
    }

    override func mouseExited(with event: NSEvent) {
        setPointerInside(false)
    }

    override func mouseDown(with event: NSEvent) {
        Diagnostics.log("usageTips.hud.mouseDown")
        if routeButtonClickIfNeeded(event) {
            return
        }
        claimInteractionFocus()
    }

    override func mouseDragged(with event: NSEvent) {
        claimInteractionFocus()
    }

    override func mouseUp(with event: NSEvent) {}
    override func rightMouseDown(with event: NSEvent) { claimInteractionFocus() }
    override func rightMouseUp(with event: NSEvent) {}
    override func otherMouseDown(with event: NSEvent) { claimInteractionFocus() }
    override func otherMouseUp(with event: NSEvent) {}

    override func keyDown(with event: NSEvent) {
        switch Int(event.keyCode) {
        case kVK_LeftArrow:
            selectUsageTip(offset: -1)
        case kVK_RightArrow:
            selectUsageTip(offset: 1)
        default:
            super.keyDown(with: event)
        }
    }

    override func scrollWheel(with event: NSEvent) {
        detailScrollView.scrollWheel(with: event)
    }

    override func layout() {
        super.layout()
        let visualFrame = currentVisualFrame()
        backgroundView.frame = visualFrame

        let outerPaddingX: CGFloat = 20
        let outerPaddingY: CGFloat = 19
        let titlePanelWidth = min(
            max(350, visualFrame.width * 0.24),
            min(460, visualFrame.width * 0.36)
        )
        let titlePanelHeight = max(1, min(116, visualFrame.height - outerPaddingY * 2))
        let titlePanelFrame = NSRect(
            x: visualFrame.minX + outerPaddingX,
            y: visualFrame.midY - titlePanelHeight / 2,
            width: titlePanelWidth,
            height: titlePanelHeight
        )
        titlePanelView.frame = titlePanelFrame

        let iconSize: CGFloat = 26
        let controlZoneWidth: CGFloat = min(148, max(128, visualFrame.width * 0.08))
        let buttonGap: CGFloat = 12
        let buttonSize: CGFloat = 52
        let buttonDotsGap: CGFloat = 10
        let dotsHeight: CGFloat = 10
        let dotsWidth = dotsView.preferredWidth

        let titleIconGap: CGFloat = 20
        let titleSidePadding: CGFloat = 28
        let titleX = titlePanelFrame.minX + titleSidePadding + iconSize + titleIconGap
        let titleWidth = max(1, titlePanelFrame.maxX - titleX - titleSidePadding)
        let titleHeight: CGFloat = 68
        let titleY = titlePanelFrame.midY - titleHeight / 2
        let detailGap = visualFrame.width < 980 ? CGFloat(30) : CGFloat(52)
        let controlGap = visualFrame.width < 980 ? CGFloat(24) : CGFloat(36)
        let detailX = titlePanelFrame.maxX + detailGap
        let controlsMaxX = visualFrame.maxX - 54
        let textRight = controlsMaxX - controlZoneWidth - controlGap
        let detailHeight: CGFloat = 88
        let detailY = visualFrame.minY + max(0, (visualFrame.height - detailHeight) / 2)

        let buttonsWidth = buttonSize * 2 + buttonGap
        let buttonsGroupMinX = controlsMaxX - buttonsWidth

        iconView.frame = NSRect(
            x: titlePanelFrame.minX + titleSidePadding,
            y: titlePanelFrame.midY - iconSize / 2,
            width: iconSize,
            height: iconSize
        )

        titleLabel.frame = NSRect(
            x: titleX,
            y: titleY,
            width: titleWidth,
            height: titleHeight
        )

        closeButton.frame = NSRect(
            x: visualFrame.maxX - 40,
            y: visualFrame.minY + 10,
            width: 30,
            height: 30
        )

        let controlGroupHeight = buttonSize + buttonDotsGap + dotsHeight
        let buttonY = visualFrame.minY + max(0, (visualFrame.height - controlGroupHeight) / 2)
        nextButton.frame = NSRect(
            x: buttonsGroupMinX + buttonSize + buttonGap,
            y: buttonY,
            width: buttonSize,
            height: buttonSize
        )
        previousButton.frame = NSRect(
            x: buttonsGroupMinX,
            y: buttonY,
            width: buttonSize,
            height: buttonSize
        )
        dotsView.frame = NSRect(
            x: buttonsGroupMinX + (buttonsWidth - dotsWidth) / 2,
            y: previousButton.frame.maxY + buttonDotsGap,
            width: dotsWidth,
            height: dotsHeight
        )

        detailScrollView.frame = NSRect(
            x: detailX,
            y: detailY,
            width: max(1, textRight - detailX),
            height: detailHeight
        )
        layoutDetailLabel()
    }

    func applyCoordinatorState() {
        guard let coordinator,
              coordinator.usageTipsVisible,
              !coordinator.usageTips.isEmpty
        else {
            isHidden = true
            clearHoverState()
            return
        }

        isHidden = false
        let safeIndex = min(max(0, coordinator.selectedUsageTipIndex), coordinator.usageTips.count - 1)
        let tip = coordinator.usageTips[safeIndex]
        titleLabel.stringValue = tr(tip.titleKey)
        updateTipIcon(id: tip.id)
        currentDetailText = formattedTipDetail(tr(tip.detailKey))
        closeButton.buttonAccessibilityLabel = tr("usageTips.close")
        previousButton.buttonAccessibilityLabel = tr("usageTips.previous")
        nextButton.buttonAccessibilityLabel = tr("usageTips.next")
        dotsView.configure(count: coordinator.usageTips.count, selectedIndex: safeIndex)
        updateColors()
        needsLayout = true
        enclosingHostView?.relayoutUsageTipsAfterContentChange()
    }

    func clearHoverState() {
        guard isPointerInside else { return }
        setPointerInside(false)
    }

    func configureVisualLayout(width: CGFloat, height: CGFloat, bottomMargin: CGFloat) {
        visualWidth = max(1, width)
        visualHeight = max(1, height)
        visualBottomMargin = max(0, bottomMargin)
        needsLayout = true
    }

    func preferredWidth(maxAvailableWidth: CGFloat) -> CGFloat {
        max(1, maxAvailableWidth)
    }

    private func setup() {
        wantsLayer = true
        layer?.shadowColor = NSColor.black.cgColor
        layer?.shadowOpacity = 0.14
        layer?.shadowRadius = 12
        layer?.shadowOffset = NSSize(width: 0, height: -2)

        backgroundView.material = .popover
        backgroundView.blendingMode = .withinWindow
        backgroundView.state = .active
        backgroundView.wantsLayer = true
        backgroundView.layer?.cornerRadius = 10
        backgroundView.layer?.masksToBounds = true
        backgroundView.layer?.borderWidth = 1
        addSubview(backgroundView)

        titlePanelView.wantsLayer = true
        titlePanelView.layer?.cornerRadius = 18
        titlePanelView.layer?.masksToBounds = true
        titlePanelView.layer?.borderWidth = 1
        addSubview(titlePanelView)

        let iconConfig = NSImage.SymbolConfiguration(pointSize: 26, weight: .bold)
        iconView.image = NSImage(
            systemSymbolName: "lightbulb.fill",
            accessibilityDescription: nil
        )?.withSymbolConfiguration(iconConfig)
        iconView.imageScaling = .scaleProportionallyDown
        addSubview(iconView)

        configureLabel(titleLabel, font: titleFont, lineBreakMode: .byWordWrapping)
        configureDetailLabel()

        detailScrollView.drawsBackground = false
        detailScrollView.hasVerticalScroller = false
        detailScrollView.hasHorizontalScroller = true
        detailScrollView.autohidesScrollers = true
        detailScrollView.borderType = .noBorder
        detailScrollView.documentView = detailLabel

        closeButton.action = { [weak self] in self?.requestHideUsageTips() }
        previousButton.action = { [weak self] in self?.selectUsageTip(offset: -1) }
        nextButton.action = { [weak self] in self?.selectUsageTip(offset: 1) }

        addSubview(titleLabel)
        addSubview(detailScrollView)
        addSubview(dotsView)
        addSubview(closeButton)
        addSubview(previousButton)
        addSubview(nextButton)

        setAccessibilityRole(.group)
        updateColors()
    }

    private func configureLabel(_ label: NSTextField, font: NSFont, lineBreakMode: NSLineBreakMode) {
        label.cell = AppGridCenteredTextFieldCell(textCell: "")
        label.isEditable = false
        label.isSelectable = false
        label.drawsBackground = false
        label.isBordered = false
        label.lineBreakMode = lineBreakMode
        label.maximumNumberOfLines = 2
        label.alignment = .left
        label.font = font
    }

    private func configureDetailLabel() {
        detailLabel.cell = AppGridCenteredMultilineTextFieldCell(textCell: "")
        detailLabel.isEditable = false
        detailLabel.isSelectable = false
        detailLabel.drawsBackground = false
        detailLabel.isBordered = false
        detailLabel.lineBreakMode = .byWordWrapping
        detailLabel.maximumNumberOfLines = 2
        detailLabel.font = detailFont
        detailLabel.cell?.usesSingleLineMode = false
        detailLabel.cell?.wraps = true
    }

    private func claimInteractionFocus() {
        setPointerInside(true)
        window?.makeFirstResponder(self)
    }

    func handleMouseEventFromHost(_ event: NSEvent, triggerButtons: Bool) -> Bool {
        let point = usageTipsPoint(for: event)
        guard bounds.contains(point) else { return false }
        if triggerButtons, routeButtonClickIfNeeded(event) {
            return true
        }
        claimInteractionFocus()
        return true
    }

    private func selectUsageTip(offset: Int) {
        coordinator?.selectUsageTip(offset: offset)
        applyCoordinatorState()
    }

    private func requestHideUsageTips() {
        Diagnostics.log("usageTips.hud.close")
        clearHoverState()
        coordinator?.onHideUsageTips()
    }

    private func routeButtonClickIfNeeded(_ event: NSEvent) -> Bool {
        let point = usageTipsPoint(for: event)
        let closeHitOutset: CGFloat = 8
        if closeButton.frame.insetBy(dx: -closeHitOutset, dy: -closeHitOutset).contains(point) {
            closeButton.performPressFeedback()
            requestHideUsageTips()
            return true
        }
        let hitOutset: CGFloat = 6
        if nextButton.frame.insetBy(dx: -hitOutset, dy: -hitOutset).contains(point) {
            Diagnostics.log("usageTips.hud.routedNext")
            selectUsageTip(offset: 1)
            return true
        }
        if previousButton.frame.insetBy(dx: -hitOutset, dy: -hitOutset).contains(point) {
            Diagnostics.log("usageTips.hud.routedPrevious")
            selectUsageTip(offset: -1)
            return true
        }
        return false
    }

    private func usageTipsPoint(for event: NSEvent) -> NSPoint {
        if event.window === window {
            return convert(event.locationInWindow, from: nil)
        }
        guard let window else { return .zero }
        let windowPoint = window.convertPoint(fromScreen: NSEvent.mouseLocation)
        return convert(windowPoint, from: nil)
    }

    private func setPointerInside(_ inside: Bool) {
        guard isPointerInside != inside else { return }
        isPointerInside = inside
        if coordinator?.setUsageTipsBubbleDisabled(inside) == true {
            enclosingHostView?.refreshVisibleRuntimeStateForUsageTips()
        }
        coordinator?.onUsageTipsHoverChange(inside)
    }

    private var enclosingHostView: AppGridCollectionHostView? {
        var current = superview
        while let view = current {
            if let host = view as? AppGridCollectionHostView {
                return host
            }
            current = view.superview
        }
        return nil
    }

    private func layoutDetailLabel() {
        let width = max(1, detailScrollView.contentView.bounds.width)
        detailLabel.preferredMaxLayoutWidth = width
        detailLabel.frame = NSRect(x: 0, y: 0, width: width, height: detailScrollView.bounds.height)
    }

    private func currentVisualFrame() -> NSRect {
        let width = min(bounds.width, visualWidth)
        let height = min(bounds.height, visualHeight)
        return NSRect(
            x: max(0, (bounds.width - width) / 2),
            y: max(0, bounds.height - visualBottomMargin - height),
            width: width,
            height: height
        )
    }

    private func formattedTipDetail(_ text: String) -> String {
        let normalized = text
            .replacingOccurrences(of: "\\s*(?:-->|->|>|→|＞|,)\\s*", with: "\n", options: .regularExpression)
            .replacingOccurrences(of: "[ \\t]{2,}", with: " ", options: .regularExpression)
            .replacingOccurrences(of: "\\n{2,}", with: "\n", options: .regularExpression)
            .trimmingCharacters(in: .whitespacesAndNewlines)
        return orderedTipDetail(normalized)
    }

    private func orderedTipDetail(_ text: String) -> String {
        let lines = text
            .components(separatedBy: .newlines)
            .map { $0.trimmingCharacters(in: .whitespacesAndNewlines) }
            .filter { !$0.isEmpty }
        guard lines.count > 1 else { return text }
        return lines
            .enumerated()
            .map { "\($0.offset + 1). \($0.element)" }
            .joined(separator: "\n")
    }

    private func updateTipIcon(id: Int) {
        let symbolName: String
        switch id {
        case 1:
            symbolName = "tag.fill"
        case 2:
            symbolName = "checkmark.seal.fill"
        case 3:
            symbolName = "arrow.up.and.down.and.arrow.left.and.right"
        case 4:
            symbolName = "doc.on.doc.fill"
        case 5:
            symbolName = "minus.circle.fill"
        case 6:
            symbolName = "arrow.up.arrow.down.circle.fill"
        case 7:
            symbolName = "square.grid.2x2.fill"
        case 8:
            symbolName = "note.text"
        default:
            symbolName = "lightbulb.fill"
        }
        let iconConfig = NSImage.SymbolConfiguration(pointSize: 26, weight: .bold)
        iconView.image = NSImage(
            systemSymbolName: symbolName,
            accessibilityDescription: nil
        )?.withSymbolConfiguration(iconConfig)
        ?? NSImage(
            systemSymbolName: "lightbulb.fill",
            accessibilityDescription: nil
        )?.withSymbolConfiguration(iconConfig)
    }

    private func updateColors() {
        let usesDarkGlass = coordinator?.appGridTheme.usesDarkGlass == true

        backgroundView.material = usesDarkGlass ? .underWindowBackground : .popover
        backgroundView.appearance = usesDarkGlass ? NSAppearance(named: .darkAqua) : nil
        backgroundView.layer?.backgroundColor = (
            usesDarkGlass
                ? NSColor.black.withAlphaComponent(0.46)
                : NSColor.white.withAlphaComponent(0.54)
        ).cgColor
        backgroundView.layer?.borderColor = (
            usesDarkGlass
                ? NSColor.white.withAlphaComponent(0.22)
                : NSColor.black.withAlphaComponent(0.18)
        ).cgColor

        titlePanelView.layer?.backgroundColor = (
            usesDarkGlass
                ? NSColor.white.withAlphaComponent(0.08)
                : NSColor.white.withAlphaComponent(0.42)
        ).cgColor
        titlePanelView.layer?.borderColor = (
            usesDarkGlass
                ? NSColor.white.withAlphaComponent(0.12)
                : NSColor.black.withAlphaComponent(0.08)
        ).cgColor

        let theme = coordinator?.appGridTheme ?? .fallback
        let accentColor = usageTipAccentColor(for: theme)
        iconView.contentTintColor = accentColor
        titleLabel.textColor = usesDarkGlass
            ? NSColor.white.withAlphaComponent(0.92)
            : accentColor.withAlphaComponent(0.94)
        detailLabel.textColor = usesDarkGlass
            ? NSColor.white.withAlphaComponent(0.95)
            : NSColor(calibratedRed: 0.08, green: 0.10, blue: 0.13, alpha: 0.94)
        applyDetailTextStyle()

        let buttonTint = usesDarkGlass
            ? NSColor.white.withAlphaComponent(0.90)
            : NSColor(calibratedWhite: 0.08, alpha: 0.92)
        let buttonHoverTint = usesDarkGlass
            ? NSColor.white
            : NSColor(calibratedWhite: 0.04, alpha: 1.00)
        let buttonPressedTint = usesDarkGlass
            ? NSColor.white
            : NSColor.black
        let buttonSurface = usesDarkGlass
            ? NSColor.white.withAlphaComponent(0.10)
            : NSColor.white.withAlphaComponent(0.38)
        let buttonHoverSurface = usesDarkGlass
            ? NSColor.white.withAlphaComponent(0.20)
            : NSColor.white.withAlphaComponent(0.70)
        let buttonPressedSurface = usesDarkGlass
            ? NSColor.white.withAlphaComponent(0.28)
            : NSColor.white.withAlphaComponent(0.86)
        let buttonBorder = usesDarkGlass
            ? NSColor.white.withAlphaComponent(0.14)
            : NSColor.black.withAlphaComponent(0.10)
        [previousButton, nextButton].forEach { button in
            button.tintColor = buttonTint
            button.hoveredTintColor = buttonHoverTint
            button.pressedTintColor = buttonPressedTint
            button.surfaceColor = buttonSurface
            button.hoveredSurfaceColor = buttonHoverSurface
            button.pressedSurfaceColor = buttonPressedSurface
            button.borderColor = buttonBorder
        }

        closeButton.tintColor = usesDarkGlass
            ? NSColor.white.withAlphaComponent(0.42)
            : NSColor.black.withAlphaComponent(0.34)
        closeButton.hoveredTintColor = usesDarkGlass
            ? NSColor.white.withAlphaComponent(0.86)
            : NSColor.black.withAlphaComponent(0.78)
        closeButton.pressedTintColor = usesDarkGlass ? .white : .black
        closeButton.surfaceColor = usesDarkGlass
            ? NSColor.white.withAlphaComponent(0.04)
            : NSColor.white.withAlphaComponent(0.08)
        closeButton.hoveredSurfaceColor = usesDarkGlass
            ? NSColor.white.withAlphaComponent(0.14)
            : NSColor.white.withAlphaComponent(0.62)
        closeButton.pressedSurfaceColor = usesDarkGlass
            ? NSColor.white.withAlphaComponent(0.22)
            : NSColor.white.withAlphaComponent(0.82)
        closeButton.borderColor = usesDarkGlass
            ? NSColor.white.withAlphaComponent(0.08)
            : NSColor.black.withAlphaComponent(0.08)

        dotsView.selectedColor = usesDarkGlass
            ? NSColor.white.withAlphaComponent(0.88)
            : NSColor.labelColor.withAlphaComponent(0.74)
        dotsView.idleColor = usesDarkGlass
            ? NSColor.white.withAlphaComponent(0.28)
            : NSColor.labelColor.withAlphaComponent(0.24)

        layer?.shadowOpacity = usesDarkGlass ? 0.28 : 0.14
        layer?.shadowRadius = usesDarkGlass ? 18 : 12
        needsDisplay = true
    }

    private func usageTipAccentColor(for theme: AppGridTheme) -> NSColor {
        switch theme {
        case .defaultLight:
            return NSColor(calibratedRed: 0.34, green: 0.40, blue: 0.48, alpha: 1.00)
        case .deepBlue:
            return NSColor(calibratedRed: 0.42, green: 0.80, blue: 1.00, alpha: 1.00)
        case .black:
            return NSColor(calibratedRed: 0.36, green: 0.74, blue: 1.00, alpha: 1.00)
        case .pink:
            return NSColor(calibratedRed: 0.70, green: 0.18, blue: 0.45, alpha: 1.00)
        case .purple:
            return NSColor(calibratedRed: 0.40, green: 0.22, blue: 0.70, alpha: 1.00)
        case .green:
            return NSColor(calibratedRed: 0.08, green: 0.42, blue: 0.22, alpha: 1.00)
        case .blue:
            return NSColor(calibratedRed: 0.06, green: 0.34, blue: 0.74, alpha: 1.00)
        case .colorful:
            return NSColor(calibratedRed: 0.06, green: 0.44, blue: 0.78, alpha: 1.00)
        }
    }

    private func applyDetailTextStyle() {
        let paragraphStyle = NSMutableParagraphStyle()
        paragraphStyle.alignment = .left
        paragraphStyle.lineBreakMode = .byWordWrapping
        paragraphStyle.minimumLineHeight = 31
        paragraphStyle.maximumLineHeight = 34
        paragraphStyle.lineSpacing = 6

        detailLabel.attributedStringValue = NSAttributedString(
            string: currentDetailText,
            attributes: [
                .font: detailFont,
                .foregroundColor: detailLabel.textColor ?? NSColor.labelColor,
                .paragraphStyle: paragraphStyle
            ]
        )
    }
}

private final class AppGridCenteredTextFieldCell: NSTextFieldCell {
    override func drawingRect(forBounds rect: NSRect) -> NSRect {
        var drawingRect = super.drawingRect(forBounds: rect)
        let textHeight = cellSize(forBounds: rect).height
        drawingRect.origin.y = rect.origin.y + max(0, (rect.height - textHeight) / 2)
        drawingRect.size.height = min(rect.height, textHeight + 2)
        return drawingRect
    }
}

private final class AppGridCenteredMultilineTextFieldCell: NSTextFieldCell {
    override func drawingRect(forBounds rect: NSRect) -> NSRect {
        var drawingRect = super.drawingRect(forBounds: rect)
        let textHeight = attributedStringValue.boundingRect(
            with: NSSize(width: max(1, rect.width), height: .greatestFiniteMagnitude),
            options: [.usesLineFragmentOrigin, .usesFontLeading]
        ).height
        let centeredHeight = min(rect.height, ceil(textHeight) + 4)
        drawingRect.origin.y = rect.origin.y + max(0, (rect.height - centeredHeight) / 2)
        drawingRect.size.height = centeredHeight
        return drawingRect
    }
}

private final class AppGridDecorativeImageView: NSImageView {
    override func hitTest(_ point: NSPoint) -> NSView? {
        nil
    }

    override func isAccessibilityElement() -> Bool {
        false
    }
}

private final class AppGridUsageTipIconButton: NSView {
    var action: (() -> Void)?
    var buttonAccessibilityLabel: String = "" {
        didSet {
            setAccessibilityLabel(buttonAccessibilityLabel)
        }
    }
    var tintColor: NSColor = .labelColor {
        didSet {
            updateIconTint()
        }
    }
    var hoveredTintColor: NSColor? {
        didSet { updateIconTint() }
    }
    var pressedTintColor: NSColor? {
        didSet { updateIconTint() }
    }
    var surfaceColor: NSColor = .clear {
        didSet { needsDisplay = true }
    }
    var hoveredSurfaceColor: NSColor = NSColor.labelColor.withAlphaComponent(0.08) {
        didSet { needsDisplay = true }
    }
    var pressedSurfaceColor: NSColor = NSColor.labelColor.withAlphaComponent(0.14) {
        didSet { needsDisplay = true }
    }
    var borderColor: NSColor = .clear {
        didSet { needsDisplay = true }
    }

    private let imageView = AppGridDecorativeImageView()
    private var trackingAreaRef: NSTrackingArea?
    private var isHovered = false
    private var isPressed = false

    override var isFlipped: Bool { true }
    override var acceptsFirstResponder: Bool { false }
    override var mouseDownCanMoveWindow: Bool { false }

    init(systemImage: String) {
        super.init(frame: .zero)
        setup(systemImage: systemImage)
    }

    required init?(coder: NSCoder) { fatalError() }

    override func acceptsFirstMouse(for event: NSEvent?) -> Bool {
        true
    }

    override func isAccessibilityElement() -> Bool {
        true
    }

    override func accessibilityRole() -> NSAccessibility.Role? {
        .button
    }

    override func accessibilityLabel() -> String? {
        buttonAccessibilityLabel
    }

    override func accessibilityPerformPress() -> Bool {
        action?()
        return true
    }

    func performPressFeedback() {
        isPressed = true
        needsDisplay = true
        updateIconTint()
        DispatchQueue.main.asyncAfter(deadline: .now() + 0.10) { [weak self] in
            self?.isPressed = false
            self?.needsDisplay = true
            self?.updateIconTint()
        }
    }

    override func layout() {
        super.layout()
        let size = min(CGFloat(26), max(14, min(bounds.width, bounds.height) * 0.62))
        imageView.frame = NSRect(
            x: (bounds.width - size) / 2,
            y: (bounds.height - size) / 2,
            width: size,
            height: size
        )
    }

    override func updateTrackingAreas() {
        super.updateTrackingAreas()
        if let trackingAreaRef {
            removeTrackingArea(trackingAreaRef)
        }
        let area = NSTrackingArea(
            rect: .zero,
            options: [.mouseEnteredAndExited, .activeAlways, .inVisibleRect],
            owner: self,
            userInfo: nil
        )
        addTrackingArea(area)
        trackingAreaRef = area
    }

    override func hitTest(_ point: NSPoint) -> NSView? {
        bounds.contains(point) ? self : nil
    }

    override func mouseEntered(with event: NSEvent) {
        isHovered = true
        needsDisplay = true
        updateIconTint()
    }

    override func mouseExited(with event: NSEvent) {
        isHovered = false
        isPressed = false
        needsDisplay = true
        updateIconTint()
    }

    override func mouseDown(with event: NSEvent) {
        Diagnostics.log("usageTips.button.mouseDown", [
            "label": buttonAccessibilityLabel
        ])
        performPressFeedback()
        action?()
    }

    override func draw(_ dirtyRect: NSRect) {
        let path = NSBezierPath(roundedRect: bounds.insetBy(dx: 1, dy: 1), xRadius: 8, yRadius: 8)
        let fill = isPressed ? pressedSurfaceColor : isHovered ? hoveredSurfaceColor : surfaceColor
        fill.setFill()
        path.fill()
        borderColor.setStroke()
        path.lineWidth = 1
        path.stroke()
    }

    private func setup(systemImage: String) {
        wantsLayer = true
        let config = NSImage.SymbolConfiguration(pointSize: 26, weight: .semibold)
        imageView.image = NSImage(
            systemSymbolName: systemImage,
            accessibilityDescription: nil
        )?.withSymbolConfiguration(config)
        imageView.imageScaling = .scaleProportionallyDown
        imageView.contentTintColor = tintColor
        addSubview(imageView)
        setAccessibilityRole(.button)
    }

    private func updateIconTint() {
        if isPressed, let pressedTintColor {
            imageView.contentTintColor = pressedTintColor
        } else if isHovered, let hoveredTintColor {
            imageView.contentTintColor = hoveredTintColor
        } else {
            imageView.contentTintColor = tintColor
        }
    }
}

private final class AppGridUsageTipDotsView: NSView {
    private var count = 0
    private var selectedIndex = 0
    var selectedColor: NSColor = .labelColor {
        didSet { needsDisplay = true }
    }
    var idleColor: NSColor = NSColor.labelColor.withAlphaComponent(0.28) {
        didSet { needsDisplay = true }
    }

    override var isFlipped: Bool { true }

    var preferredWidth: CGFloat {
        guard count > 0 else { return 0 }
        return CGFloat(count) * 5 + CGFloat(max(0, count - 1)) * 5 + 2
    }

    func configure(count: Int, selectedIndex: Int) {
        self.count = count
        self.selectedIndex = selectedIndex
        needsDisplay = true
    }

    override func draw(_ dirtyRect: NSRect) {
        guard count > 0 else { return }
        let spacing: CGFloat = 5
        let totalWidth = preferredWidth
        var x = (bounds.width - totalWidth) / 2
        let centerY = bounds.midY

        for index in 0..<count {
            let selected = index == selectedIndex
            let dotSize: CGFloat = selected ? 6 : 5
            let color = selected ? selectedColor : idleColor
            color.setFill()
            NSBezierPath(
                ovalIn: NSRect(
                    x: x,
                    y: centerY - dotSize / 2,
                    width: dotSize,
                    height: dotSize
                )
            ).fill()
            x += 5 + spacing
        }
    }

}

private final class AppGridContainerCollectionLayout: NSCollectionViewLayout {
@@ -605,7 +1796,7 @@

    private struct LayoutItem {
        let index: Int
        let frame: NSRect
        var frame: NSRect
    }

    private struct LayoutPlan {
@@ -741,8 +1932,20 @@
        let columnWidth = floor((availableWidth - gap * CGFloat(columnCount - 1)) / CGFloat(columnCount))
        var columnHeights = Array(repeating: outerPadding, count: columnCount)
        var items: [LayoutItem] = []
        var lastItemIndexForColumn = Array<Int?>(repeating: nil, count: columnCount)
        let bottomPinnedGroups = groups.enumerated()
            .filter { bottomPinnedPriority(for: $0.element.containerID) != nil }
            .sorted {
                let lhsPriority = bottomPinnedPriority(for: $0.element.containerID) ?? Int.max
                let rhsPriority = bottomPinnedPriority(for: $1.element.containerID) ?? Int.max
                if lhsPriority != rhsPriority { return lhsPriority < rhsPriority }
                return $0.offset < $1.offset
            }
        let bottomPinnedIndexes = Set(bottomPinnedGroups.map { $0.offset })

        for (index, group) in groups.enumerated() {
            if bottomPinnedIndexes.contains(index) { continue }

            let columnIndex = columnHeights.indices.min { columnHeights[$0] < columnHeights[$1] } ?? 0
            let x = outerPadding + CGFloat(columnIndex) * (columnWidth + gap)
            let y = columnHeights[columnIndex]
@@ -757,16 +1960,54 @@
                    frame: NSRect(x: x, y: y, width: columnWidth, height: height)
                )
            )
            lastItemIndexForColumn[columnIndex] = items.count - 1
            columnHeights[columnIndex] = y + height + gap
        }

        let tallest = columnHeights.max() ?? outerPadding
        let contentHeight = (groups.isEmpty ? outerPadding * 2 : tallest - gap + outerPadding)
        var contentBottom = columnHeights.max() ?? outerPadding
        if !bottomPinnedGroups.isEmpty {
            let alignedBottom = max(outerPadding, contentBottom - gap)
            for itemIndex in lastItemIndexForColumn.compactMap({ $0 }) {
                let currentFrame = items[itemIndex].frame
                let alignedHeight = alignedBottom - currentFrame.minY
                if alignedHeight > currentFrame.height {
                    items[itemIndex].frame.size.height = alignedHeight
                }
            }
        }
        for (index, group) in bottomPinnedGroups {
            let y = max(outerPadding, contentBottom)
            let height = AppGridCollectionMetrics.cardHeight(
                appCount: group.apps.count,
                width: availableWidth,
                iconSize: iconSize
            )
            items.append(
                LayoutItem(
                    index: index,
                    frame: NSRect(x: outerPadding, y: y, width: availableWidth, height: height)
                )
            )
            contentBottom = y + height + gap
        }

        let contentHeight = (items.isEmpty ? outerPadding * 2 : contentBottom - gap + outerPadding)
            + max(0, bottomContentPadding)
        return LayoutPlan(
            items: items,
            contentSize: NSSize(width: boundedContentWidth, height: max(1, contentHeight))
        )
    }

    private static func bottomPinnedPriority(for containerID: String) -> Int? {
        switch containerID {
        case AppContainerID.uncategorized:
            return 0
        case AppContainerID.appleBuiltIn:
            return 1
        default:
            return nil
        }
    }

    private struct RowItem {
@@ -1103,7 +2344,7 @@
    override func draw(_ dirtyRect: NSRect) {
        guard let coordinator, let group else { return }
        let displayStyle = coordinator.displayStyle
        let tagColor = TagColor.nsColor(for: coordinator.tagColors[group.name] ?? 0)
        let tagColor = coordinator.tagColor(for: group.name)
        let isNavigationHighlighted = coordinator.highlightedGroupName == group.name
        let isColorlessActive = coordinator.isColorlessContainerMode
            && (isHovered || isNavigationHighlighted)
@@ -1111,15 +2352,24 @@
        if displayStyle.usesCardSurface {
            let rect = bounds.insetBy(dx: 0.5, dy: 0.5)
            let path = NSBezierPath(roundedRect: rect, xRadius: 14, yRadius: 14)
            cardSurfaceColor().setFill()
            path.fill()
            if coordinator.isColoredContainerMode || isColorlessActive {
                tagColor.withAlphaComponent(0.30).setFill()
            if coordinator.appGridTheme.usesDarkGlass {
                drawDarkCardSurface(
                    path: path,
                    tagColor: tagColor,
                    isActive: isHovered || isNavigationHighlighted,
                    isTinted: coordinator.isColoredContainerMode || isColorlessActive
                )
            } else {
                cardSurfaceColor().setFill()
                path.fill()
                if coordinator.isColoredContainerMode || isColorlessActive {
                    tagColor.withAlphaComponent(0.30).setFill()
                    path.fill()
                }
                NSColor.labelColor.withAlphaComponent(0.08).setStroke()
                path.lineWidth = 1
                path.stroke()
            }
            NSColor.labelColor.withAlphaComponent(0.08).setStroke()
            path.lineWidth = 1
            path.stroke()
        }

        drawHeader(title: group.name, displayStyle: displayStyle)
@@ -1339,6 +2589,17 @@
            && (isHovered || isNavigationHighlighted)
        let shouldShadow = coordinator.displayStyle.usesCardSurface
            && ((coordinator.isColoredContainerMode && (isHovered || isNavigationHighlighted)) || isColorlessActive)
        if coordinator.appGridTheme.usesDarkGlass && coordinator.displayStyle.usesCardSurface {
            let tagColor = coordinator.tagColor(for: group?.name ?? "")
            let active = isHovered || isNavigationHighlighted
            layer?.shadowColor = active
                ? tagColor.withAlphaComponent(0.82).cgColor
                : NSColor.black.withAlphaComponent(0.72).cgColor
            layer?.shadowOpacity = active ? 0.50 : 0.28
            layer?.shadowRadius = active ? 24 : 14
            layer?.shadowOffset = NSSize(width: 0, height: active ? -8 : -4)
            return
        }
        layer?.shadowColor = NSColor.black.cgColor
        layer?.shadowOpacity = shouldShadow ? 0.22 : 0
        layer?.shadowRadius = shouldShadow ? 8 : 0
@@ -1374,6 +2635,40 @@
        return NSColor.white.withAlphaComponent(0.62)
    }

    private func drawDarkCardSurface(
        path: NSBezierPath,
        tagColor: NSColor,
        isActive: Bool,
        isTinted: Bool
    ) {
        NSGraphicsContext.saveGraphicsState()
        if isActive {
            let glow = NSShadow()
            glow.shadowColor = tagColor.withAlphaComponent(0.36)
            glow.shadowBlurRadius = 28
            glow.shadowOffset = NSSize(width: 0, height: -8)
            glow.set()
        }
        NSColor(calibratedRed: 0.12, green: 0.18, blue: 0.25, alpha: 0.58).setFill()
        path.fill()
        NSGraphicsContext.restoreGraphicsState()

        if isTinted {
            tagColor.withAlphaComponent(isActive ? 0.18 : 0.10).setFill()
            path.fill()
        }

        NSColor.white.withAlphaComponent(isActive ? 0.08 : 0.045).setFill()
        path.fill()

        let strokeColor = isActive
            ? tagColor.withAlphaComponent(0.72)
            : NSColor.white.withAlphaComponent(0.18)
        strokeColor.setStroke()
        path.lineWidth = isActive ? 1.4 : 1.0
        path.stroke()
    }

    private func drawHeader(title: String, displayStyle: AppGridCollectionDisplayMode) {
        let horizontalInset = displayStyle.usesCardSurface ? AppGridCollectionMetrics.cardPadding : 0
        let verticalInset = displayStyle.usesCardSurface ? AppGridCollectionMetrics.cardPadding : 0
@@ -1383,9 +2678,13 @@
            width: max(1, bounds.width - horizontalInset * 2),
            height: AppGridCollectionMetrics.headerHeight
        )
        let isDarkGrid = coordinator?.appGridTheme.usesDarkGlass == true
        let headerTextColor = isDarkGrid
            ? NSColor.white.withAlphaComponent(0.74)
            : NSColor.secondaryLabelColor
        let attributes: [NSAttributedString.Key: Any] = [
            .font: NSFont.systemFont(ofSize: 18, weight: .semibold),
            .foregroundColor: NSColor.secondaryLabelColor,
            .foregroundColor: headerTextColor,
            .paragraphStyle: centeredParagraph(lineBreak: .byTruncatingMiddle)
        ]
        let titleSize = title.size(withAttributes: attributes)
@@ -1397,7 +2696,9 @@
            height: headerRect.height - 6
        )
        let lineY = headerRect.midY
        NSColor.secondaryLabelColor.withAlphaComponent(0.25).setStroke()
        (isDarkGrid ? NSColor.white : NSColor.secondaryLabelColor)
            .withAlphaComponent(isDarkGrid ? 0.16 : 0.25)
            .setStroke()
        let leftLine = NSBezierPath()
        leftLine.move(to: NSPoint(x: headerRect.minX, y: lineY))
        leftLine.line(to: NSPoint(x: max(headerRect.minX, titleRect.minX - 2), y: lineY))