niri: add zed and zathura keybind

dotfiles/.config/niri/config.kdl

@@ -383,7 +383,8 @@ binds {
     Mod+T hotkey-overlay-title="Open a Terminal: alacritty" { spawn "alacritty"; }
     Super+Alt+L hotkey-overlay-title="Lock the Screen" { spawn "dms" "ipc" "call" "lock" "lock"; }
     Mod+B hotkey-overlay-title="Open a browser: zen" { spawn "zen"; }
-    Mod+Z hotkey-overlay-title="Open zathura" { spawn "zathura"; }
+    Mod+Z hotkey-overlay-title="Open zed" { spawn "zeditor"; }
+    Mod+P hotkey-overlay-title="Open zathura" { spawn "zathura"; }
     Mod+E hotkey-overlay-title="Open a file browser" { spawn "nautilus"; }
 
     // Use spawn-sh to run a shell command. Do this if you need pipes, multiple commands, etc.

dotfiles/.config/zed/settings.json

@@ -7,6 +7,7 @@
 // custom settings, run `zed: open default settings` from the
 // command palette (cmd-shift-p / ctrl-shift-p)
 {
+  "cli_default_open_behavior": "existing_window",
   "which_key": {
     "enabled": true,
   },