TapTool
tap — dispatch a single-tap gesture (a ~50ms stroke via tapPath) at the given screen coordinates and await completion. Use when no node matches the selector or for raw coord-based input.
Params: required x, y (screen pixels; must be non-negative, non-NaN).
On success returns success = true, x, y. Error codes: accessibility_not_enabled (service not bound), invalid_coords (non-numeric / negative / NaN), gesture_failed (dispatch cancelled or rejected).