Tree

// ── Tree ──
pub fn buildTree(scope: *ui.Scope, cx: *ui.Cx) anyerror!*ui.Node {
    const leaves = [_]W.TreeNodeData{
        .{ .id = "main", .label_text = "main.zig" },
        .{ .id = "root", .label_text = "root.zig" },
    };
    const nodes = [_]W.TreeNodeData{
        .{ .id = "src", .label_text = "src", .children = &leaves },
        .{ .id = "readme", .label_text = "README.md" },
    };
    const t = try W.Tree(.{ .nodes = &nodes }).mount(scope, cx);
    return t.wrapper;
}