Menu

// ── Menu（trigger+popover：item 在弹层里，story 给 trigger 加按钮，e2e 点开验 item）──
pub fn buildMenu(scope: *ui.Scope, cx: *ui.Cx) anyerror!*ui.Node {
    const a = cx.allocator;
    const c = try col(cx, 8);
    try c.appendChild(a, try label(cx, "Click the trigger to open the menu"));
    const items = [_]W.MenuItem{
        .{ .id = "cut", .label_text = "Cut", .shortcut = "⌘X" },
        .{ .id = "copy", .label_text = "Copy", .shortcut = "⌘C" },
        .{ .id = "sep", .kind = .separator },
        .{ .id = "del", .label_text = "Delete", .danger = true },
    };
    const m = try W.Menu(.{ .items = &items }).mount(scope, cx);
    // 给 trigger 放一个有标签的按钮，让 story 可见可点
    try m.trigger.appendChild(a, try W.Button(.{ .label = "Actions ▾", .variant = .secondary }).mount(scope, cx));
    m.wrapper.meta.ownership.meta.test_id = "story.menu.trigger";
    try c.appendChild(a, m.wrapper);
    return c;
}