Optional "Hold-to-Use" / "Use once" mode for tools like Move, Copy, Delete
First of all, congratulations on making such a fantastic game! I’m really enjoying it.

I often find myself forgetting to deactivate a tool after I’m done using it, which sometimes leads to accidentally deleting, moving, or copying things.
A “press-and-hold-to-use” or “use-once” option would make the controls feel much quicker and more intuitive.

For example:
Hold-to-use: Hold X to delete, and when you release X, it automatically returns to the normal cursor. Same for E, C, etc.
Use-once: Press X to activate the function for a single use, after which it automatically returns to the normal cursor.