string, 'estimate' => int]. Defaults to none.
*
* The tasks_submitted marker distinguishes "the user cleared every row" from
* "this form has no task section", which an empty tasks[] cannot express because
* a form with no inputs of that name posts nothing at all.
*/
$existing_tasks = $existing_tasks ?? [];
?>
Task
Estimate (mins)
Leave the estimate blank if you don't track one. Blank task names are ignored.