LoadingWidget

Compose the loading widget layout.

Start animation on mount.

Preserves _start_time when the widget is remounted (e.g., after being removed and re-added for repositioning) so the elapsed-time counter doesn't reset. Repositioning via move_child avoids the remount path entirely, but this guard keeps the behavior correct if any caller ever falls back to remove + mount.

Stop the animation timer when the widget leaves the DOM.

Stop animation before delegating DOM removal to Textual.

Update the status text.

Pause the animation and update status.

Resume the animation, excluding the paused interval from elapsed time.

Rebases _start_time forward by the paused duration so the elapsed-time counter continues from where it paused rather than counting the wait.

No-op when not currently paused. This method is wired both as a Future.add_done_callback and as a self-healing net in the app's _set_spinner, so it can fire on a widget that was never paused (e.g. one created to replace the paused spinner mid-approval). Returning early there avoids rebasing the start time or clobbering that widget's status.

Stop the animation (widget will be removed by caller).