Textarea

// ── Textarea ──
pub fn buildTextarea(scope: *ui.Scope, cx: *ui.Cx) anyerror!*ui.Node {
    const a = cx.allocator;
    const c = try col(cx, 12);

    const ta = try W.Textarea(.{ .label_text = "Notes", .placeholder = "Write something…", .rows = 5, .width = 420 }).mount(scope, cx);
    ta.meta.ownership.meta.test_id = "story.textarea.box";
    try c.appendChild(a, ta);

    try c.appendChild(a, try W.Textarea(.{ .label_text = "With helper", .placeholder = "Bio", .helper = "Max 500 characters", .rows = 3, .width = 420 }).mount(scope, cx));
    try c.appendChild(a, try W.Textarea(.{ .label_text = "With error", .value = "too short", .error_msg = "Please write more", .rows = 3, .width = 420 }).mount(scope, cx));
    try c.appendChild(a, try W.Textarea(.{ .label_text = "Disabled", .placeholder = "Cannot edit", .disabled = true, .rows = 3, .width = 420 }).mount(scope, cx));
    return c;
}