increase kitty scrollback

modules/applications/kitty.nix

@@ -1,4 +1,8 @@
-{ lib, config, pkgs, ... }:
+{
+  lib,
+  config,
+  ...
+}:
 let
   cfg = config.modules.apps.kitty;
 in
@@ -12,6 +16,7 @@ in
       enable = true;
       settings = {
         confirm_os_window_close = 0;
+        scrollback_lines = 5000;
       };
       shellIntegration.enableZshIntegration = true;
     };