Devlog 5 - Task Completion Feature

I improved the task system by adding a way to mark tasks as completed.

Before this update, users could add study tasks, but there was no way to show which tasks had already been finished. To solve this,

I added a checkbox next to every task.

When a checkbox is selected, the task text gets a line through it.

I also reduced the opacity a little so completed tasks look different from active ones.