Hand the terminal launcher the focused window's pid from Lua (#13521)

To open a new terminal in the focused terminal's directory, the launcher
asked Hyprland for the active window with hyprctl, ~10ms on every
SUPER+RETURN. The binding now reads the pid from hl.get_active_window() and
passes it as --pid. Without one, from the menu or a shell, the launcher asks
Hyprland as before.

The bind is now a Lua function, which Hyprland reports only as __lua, so
o.bind_commands records the command it stands for and the keybindings menu
still launches a terminal when the entry is picked.

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

bin/omarchy-launch-terminal

@@ -1,6 +1,12 @@
 #!/bin/bash
 
 # omarchy:summary=Launch a terminal in the active terminal's current directory
-# omarchy:args=[command...]
+# omarchy:args=[--pid=<terminal-pid>] [command...]
 
-exec setsid uwsm-app -- xdg-terminal-exec --dir="$(omarchy-cmd-terminal-cwd)" "$@"
+pid=""
+if [[ ${1:-} == --pid=* ]]; then
+  pid=${1#--pid=}
+  shift
+fi
+
+exec setsid uwsm-app -- xdg-terminal-exec --dir="$(omarchy-cmd-terminal-cwd "$pid")" "$@"