Can I use kitty keyboard protocol modifiers

[JOTSR]

Here my situation, I wan't to use simple (to use and remember) shortcuts for my: os/wm, terminal emulator (optional) and terminal multiplexer.

To achieve this I choose to use Meta as a context aware shortcut prefix (no more conflicts, replicable shortcut depending of the context).

I use zellij as multiplexer, kitty or wezterm as terminal and niri or windows depending of the os. As zellij and kitty/wezterm supports kitty keyboard protocol I want to map for example :

• os layer: Meta (default) -> Meta
• term layer (optional): Meta -> kitty_super
• multiplexer layer: Meta -> kitty_hyper

I made some tries without results, I is possible, am I going the right way ?

# Hyper = 0x7d
# Hyper = 0xe05c
Hyper = 57444

# Toggle Virtual1 on `Shift + F1`
Shift{F1} >> Virtual1
Virtual1{Shift{F1}} >> !Virtual1

Virtual1{Meta} >> "\x1b[104;9u"

Second issue, but less blocking, is it possible to get the PID of the focused window (or maybe there is another solution). I want if possible to discriminate term and term + multiplexer.