open hyperlinks, local files in external app on keypress event

Some terminals (such as iterm2) include support OSC 8 clickable hyperlinks, that integrate with the OS to open a URL or local file with a mouse click:

• https://github.com/mintty/mintty/wiki/CtrlSeqs#hyperlinks
• https://www.iterm2.com/documentation-escape-codes.html

Is it possible to simulate a mouse click with a key press to trigger this behavior? For example, the idea would be to highlight/select a menu item, press return, and trigger the OSC 8 event.

Currently I emulate similar behavior using something like:

    @self.kb.add("enter")
    def _(event):
        """Open url"""
        subprocess.run("<open url command>", shell=True)

but it's much slower/more error prone than the OSC 8 behavior in iterm2.

Start by reviewing prompt-toolkit's keyboard event handling around the Enter binding shown in the issue, then read the linked OSC 8 terminal documentation. Determine whether keypress activation is supported by the library's existing abstractions and define what behavior would count as complete; the issue does not name implementation files or tests.