[Feature Request] Add a global stop key (e.g. ESC) to immediately halt execution

[kRystalDevv]

I often trigger the script from the taskbar using Win + 1. Sometimes I already have a large block of text copied, but the wrong window is in focus or I click too late. The script then keeps typing into whatever happens to be active, which can quickly create a mess.

At the moment, once execution starts, there is no quick or reliable way to interrupt it.

Problem

• Script continues running even if the target window is not focused
• Text is typed into unintended applications or fields
• No emergency stop once execution begins

Requested feature

Add a global stop key, such as ESC, that immediately halts the script mid-execution, regardless of which window is focused.

Why this matters

• Prevents accidental modification of unrelated text or forms
• Makes fast keyboard shortcuts safer to use
• Reduces risk when focus changes unexpectedly

Optional enhancements

• Show a notification when execution is cancelled
• Allow users to customize the stop key in settings